Massachusetts Schedule B is the state tax schedule that residents, part-year residents, and nonresidents file with Form 1 or Form 1-NR/PY to report interest income, dividend income, and certain short-term capital gains and long-term gains on collectibles. The schedule reconciles federal interest and dividends to Massachusetts rules, applies the special 12% tax on short-term gains and collectibles, and feeds totals back to your main return through the Massachusetts Department of Revenue (DOR).
Filing Schedule B wrong is a top reason MA personal income tax returns get flagged, and the DOR processes more than 3.9 million individual returns each year, with roughly 1 in 7 containing some form of interest, dividend, or capital gain entry that touches Schedule B. Getting it right protects your refund, avoids the 12% short-term gain trap, and keeps you out of an underreporter notice from the DOR’s matching unit.
Here is what you will learn in this guide:
- 📋 What Schedule B is, who must file it, and how it ties to M.G.L. c. 62 §§ 2 and 8
- 🧾 Every line on the 2025 revision walked through in plain English with sample entries
- 👨👩👧 Three full filer scenarios (retiree, active investor, part-year resident) shown in tables
- 💸 The deadlines, penalties, and 12% short-term tax rules that trip filers up
- ✅ Mistakes to avoid, do’s and don’ts, and 12+ field-level FAQs answered
What the Form Is and Who Must File It
Massachusetts Schedule B is the Interest, Dividends and Certain Capital Gains and Losses schedule that attaches to Form 1 for full-year residents and to Form 1-NR/PY for part-year residents and nonresidents. The schedule exists because Massachusetts taxes some income differently from the IRS. Interest from Massachusetts banks gets a special deduction, short-term capital gains are taxed at 12%, and gains on collectibles and pre-1996 installment sales also fall under the 12% rate under M.G.L. c. 62 § 4.
You must file Schedule B if any of the following apply for the tax year. Your gross interest and dividend income (other than interest from Massachusetts banks) is more than $1,500. You have any short-term capital gain or loss. You have a long-term gain on collectibles, including coins, art, stamps, gems, antiques, rugs, metals, or wine. You have a gain from a pre-1996 installment sale that is classified as ordinary income. You have a Schedule B-eligible loss to carry over to future years.
The DOR uses Schedule B to apply Massachusetts-only rules that the federal Schedule B and Schedule D do not capture. The 5% tax rate applies to interest and ordinary dividends, but the 12% rate applies to short-term gains and collectibles gains as confirmed in TIR 02-21. Filers who skip Schedule B because they only had a 1099-INT for $200 from a local credit union may still owe nothing, but those with brokerage accounts almost always cross the $1,500 threshold once mutual fund dividends post.
The form covers four logical zones. Part 1 reports interest and dividends. Part 2 reports interest deductions and the 12% deduction. Part 3 adjusts and totals 5% interest and dividend income. Parts 4 through 7 handle short-term gains, long-term gains on collectibles, carryover losses, and the final 12% capital gain calculation that flows to Form 1 line 23 or Form 1-NR/PY line 27.
Before You Start: Documents and Information You Need
Schedule B leans heavily on figures from your federal return and your year-end broker and bank statements. Gathering everything before you open the form prevents the enter, erase, re-enter cycle that causes most arithmetic mistakes. The DOR’s matching program cross-references the federal Schedule B (Form 1040) and Schedule D, so your numbers must reconcile.
Use this pre-filing checklist before you start. Each item matters, and missing one usually forces a Form CA-6 abatement later.
- Federal Form 1040 with completed Schedule B and Schedule D, because Massachusetts starts from federal numbers and adjusts
- All 1099-INT forms from banks, credit unions, and the U.S. Treasury, because each issuer is reported on its own line in Part 1
- All 1099-DIV forms, because ordinary dividends and capital gain distributions split into two different MA buckets
- All 1099-B forms from brokers showing short-term and long-term sales, because the holding period drives the 12% versus 5% decision
- Schedule K-1s from partnerships, S corporations, trusts, and estates, because pass-through interest, dividends, and gains land on Schedule B
- Prior-year Massachusetts Schedule B and Schedule D, because unused short-term and long-term losses carry forward
- A list of which 1099-INT amounts came from Massachusetts banks, because those qualify for the $100/$200 MA bank interest deduction
- Records of any collectibles sales (coins, art, antiques, gems), because those are taxed at 12% even when held long-term
- Records of any pre-1996 installment sale payments received during the year, because those still fall under the old 12% regime
- Your Social Security number and your spouse’s SSN if filing jointly, because the schedule must match the SSN on Form 1
If you trade through more than one broker, download every consolidated 1099 before opening Schedule B. A common error is forgetting a small Robinhood or Fidelity account that produced $40 in dividends, which the DOR catches through 1099 matching and bills with interest months later under M.G.L. c. 62C § 32.
Where to Get the Form and How to Access It
The official 2025 Massachusetts Schedule B is published as a fillable PDF on the DOR personal income tax forms page and is also embedded in every commercial tax software package the DOR approves. The revision date is printed in the lower-left corner of the form, and you should confirm it reads 2025 before entering data, because Massachusetts updates Schedule B almost every year to reflect threshold and rate changes.
You can also get Schedule B by filing through MassTaxConnect, the DOR’s free online portal. MassTaxConnect generates Schedule B automatically when you enter interest, dividend, or capital gain figures, and it does the math for you. Tax software such as TurboTax, H&R Block, TaxAct, FreeTaxUSA, and Drake all support Schedule B and pull federal numbers forward to reduce data entry errors.
Paper filers can request the form by mail by calling the DOR at 1-800-392-6089, by visiting a DOR walk-in service center, or by picking it up at many Massachusetts public libraries during filing season. Volunteer Income Tax Assistance (VITA) sites listed on the IRS VITA locator also stock Schedule B and can help low- and moderate-income filers complete it for free.
If you use older software or print-and-mail an obsolete form, the DOR will still process it but may apply current-year rates and recompute totals, which often produces a notice that looks like an audit but is really a math correction under M.G.L. c. 62C § 26. Always pull the form fresh each tax year.
Step-by-Step: How to Fill Out Massachusetts Schedule B Line by Line
Schedule B is organized into seven parts. Work top to bottom and never skip a line, even if the answer is zero, because blank lines cause the DOR’s scanner to reject the schedule and request a paper amendment. Use whole dollars only, round 50 cents up, and place a minus sign before any negative amount.
Name and Social Security Number Header
The header asks for your name as shown on Form 1 and your Social Security number. Type or print your name in all caps in the same order it appears on your federal return, and write your nine-digit SSN with no dashes in the boxes provided. Maria Lopez writes MARIA LOPEZ and 123-45-6789 as 123456789.
If you file jointly, only the primary taxpayer’s name goes in the header, because the schedule attaches to a single Form 1 that already lists both spouses. Joint filers who write only the spouse’s name on Schedule B trigger a name-mismatch hold that delays the entire refund. The misconception that both names belong here costs filers two to four weeks of processing time during peak season.
A common mistake is entering a nickname like Marie when the SSA record shows Maria. The DOR matches SSN to name through the Social Security Administration database, and a mismatch flips the return into manual review. Use your full legal name exactly as it appears on your Social Security card.
Part 1, Line 1: Total Interest Income
Line 1 asks for total interest income from your federal Schedule B, plus any taxable interest you received that did not require a federal Schedule B. Add every 1099-INT box 1 amount, every K-1 interest line, and any seller-financed mortgage interest you received, then enter the grand total on line 1. David Chen received $1,840 from Bank of America, $260 from a Fidelity money market, and $75 from his brother’s seller-financed note, so he writes 2175 on line 1.
Massachusetts does not tax interest from direct U.S. Treasury obligations, but you still include it on line 1 and back it out on line 6 in Part 2. The edge case that confuses filers is interest from U.S. agencies. Interest from Ginnie Mae and Fannie Mae is taxable in Massachusetts, but interest from the Federal Home Loan Bank and direct Treasury bonds is exempt.
A common mistake is excluding Treasury interest entirely from line 1, which makes the schedule fail to reconcile with federal Schedule B. The consequence is a DOR notice asking you to file an amended Schedule B. Many filers wrongly believe if it is not taxed in MA, it does not belong on Schedule B at all, but the form requires the full federal figure first, then applies the Massachusetts deduction below.
Part 1, Line 2: Total Ordinary Dividends
Line 2 captures total ordinary dividends from federal Schedule B, including 1099-DIV box 1a amounts and any K-1 ordinary dividend lines. Capital gain distributions in box 2a do not go here; those flow to Schedule D. Aisha Brown received $980 in Vanguard ordinary dividends and $410 from a Schwab ETF, so she writes 1390 on line 2.
The nuance many filers miss is that qualified dividends, although broken out separately on the 1099-DIV box 1b, are included inside box 1a and are taxed at the full Massachusetts 5% rate. Massachusetts does not honor the federal preferential qualified dividend rate, a rule reaffirmed in TIR 99-17.
A common mistake is double-counting box 1b qualified dividends on top of box 1a ordinary dividends. The result is overpayment at the 5% rate, which the DOR rarely catches because it favors the state. The misconception that qualified dividends are taxed lower in MA is wrong and routinely costs filers money.
Part 1, Line 3: Other Interest and Dividends
Line 3 picks up taxable interest and dividend income that did not appear on your federal Schedule B, such as a small amount of interest under the federal $1,500 reporting threshold or interest from a private loan. Janet Park loaned $5,000 to a friend at 4% interest and received $200 during the year, but had no other interest, so she writes 200 on line 3.
The edge case is K-1 box 5 interest from a partnership where you did not file a federal Schedule B. That interest still belongs on line 3. Another edge case is interest credited but not withdrawn from a foreign account that you did not have to report federally because you were under the FBAR threshold; it still belongs here.
A common mistake is leaving line 3 blank when you have under-threshold federal interest. The consequence is an underreporter notice when the DOR matches third-party 1099 data. The misconception that if I did not file federal Schedule B, I do not need to report it in MA is wrong because Massachusetts has no minimum threshold for reporting interest.
Part 1, Line 4: Total Interest and Dividends
Line 4 is the sum of lines 1, 2, and 3. Add the three figures and enter the total. David, Aisha, and Janet, if combined, would write 3765 on line 4. Use a calculator to avoid transposition errors.
The nuance here is rounding. Massachusetts uses whole-dollar rounding, so a federal Schedule B that shows $2,174.62 rounds to $2,175. Rounding inconsistently between line 1 and line 4 causes a one-dollar mismatch that the DOR’s automated checker flags.
A common mistake is forgetting to add line 3 because it is small. The consequence is a DOR recomputation notice. The misconception is that small amounts get ignored by the state, but the DOR’s automated math runs to the dollar.
Part 2, Line 5: Total Interest from Massachusetts Banks
Line 5 reports interest received from Massachusetts banks, which qualifies for a deduction of up to $100 single, $200 married filing jointly. The bank must have its main office or a branch in Massachusetts and be chartered under M.G.L. c. 62 § 2(a)(2)(A). Carlos Rivera earned $145 from Eastern Bank in Boston, so he writes 145 on line 5.
The nuance is that nationwide banks like Bank of America, Citizens Bank, and Santander qualify if they have Massachusetts branches, but online-only banks like Ally and Marcus do not, because they have no Massachusetts branch. Credit union interest also qualifies if the credit union has a Massachusetts branch.
A common mistake is including all bank interest here, regardless of state. The consequence is an over-deduction that the DOR will reverse through a notice plus interest. The misconception that any bank with online MA customers counts is wrong; physical Massachusetts presence is required.
Part 2, Line 6: Other Interest and Dividend Deductions
Line 6 captures Massachusetts-specific deductions, including U.S. Treasury interest reported on line 1, interest from federally exempt obligations like the Federal Home Loan Bank, and any interest already taxed by Massachusetts in a prior year. David Chen had $310 in Treasury interest inside line 1, so he writes 310 on line 6.
The edge case is mutual fund dividends that include U.S. government obligation interest. Vanguard, Fidelity, and Schwab issue annual percentage of income from U.S. government securities statements, and you multiply that percentage by box 1a to get the line 6 deduction. Many filers leave this on the table because they never open the supplemental statement.
A common mistake is deducting state-tax-exempt municipal bond interest here, but municipal bond interest is already excluded from federal Schedule B and never reached line 1, so deducting it again is double-counting. The consequence is a DOR adjustment plus 5% interest. The misconception is that all tax-free interest belongs on line 6, but only items that flowed through line 1 belong here.
Part 2, Line 7: Subtotal Interest and Dividends
Line 7 subtracts the sum of lines 5 and 6 from line 4. Enter the result, but never less than zero. If line 5 + line 6 exceeds line 4, enter zero on line 7 and lose the unused portion of the deduction; it does not carry forward.
The nuance is that the MA bank interest deduction is capped at $100 single or $200 joint regardless of how much line 5 actually shows. Carlos Rivera, single, with $145 on line 5, can only deduct $100 of it on line 7’s calculation, and writes the deduction in the proper subtraction.
A common mistake is deducting the full line 5 figure when it exceeds the cap. The DOR’s automated cap-checker reverses the excess. The misconception that all MA bank interest is deductible misses the statutory ceiling under M.G.L. c. 62 § 2.
Part 3, Line 8: 5% Interest and Dividends Subtotal
Line 8 carries forward the line 7 amount and combines it with any adjustments from earlier lines for non-MA partnership or trust income. For most filers, line 8 equals line 7. Aisha Brown writes 1380 on line 8 because her line 7 was $1,380.
The edge case involves K-1 income from out-of-state pass-throughs, where the entity already taxed the interest at the source state. Massachusetts allows a credit on Schedule OJC, not a Schedule B adjustment, so do not reduce line 8 for that.
A common mistake is reducing line 8 for foreign tax already withheld. The credit goes on Schedule FTC instead. The misconception that Schedule B reduces income for foreign tax is wrong; the foreign tax credit is a separate calculation.
Part 3, Line 9: Allowable Deductions
Line 9 reports allowable deductions from interest and dividend income, such as fiduciary fees and certain investment-related expenses to the extent allowed under M.G.L. c. 62 § 3(B)(a)(10). Most individual filers enter zero. Janet Park, who paid $250 in trust administration fees, writes 250 on line 9.
The nuance is that Massachusetts no longer allows the full slate of federal investment expense deductions that were curtailed by the federal Tax Cuts and Jobs Act. Only specifically enumerated MA deductions apply. The DOR has clarified the limits in TIR 18-14.
A common mistake is deducting brokerage account maintenance fees. The consequence is a DOR adjustment and a small bill. The misconception that anything related to investments is deductible fails the MA-specific allowable list.
Part 3, Line 10: Adjusted Interest and Dividends
Line 10 is line 8 minus line 9, the figure that flows to Form 1 line 20 or Form 1-NR/PY line 24. This is the number Massachusetts taxes at 5%. David Chen writes 1865 on line 10.
The nuance is that a negative line 10 is allowed only for excess deductions in limited cases involving estates and trusts; individual filers cannot generate a negative figure. If your math drives below zero, enter zero.
A common mistake is forgetting to copy line 10 to Form 1 line 20. The consequence is a return that omits all interest and dividend income from the tax base, which the DOR auto-corrects with a math notice. The misconception that the schedule alone reports the income misses that Form 1 must also reflect it.
Part 4, Line 11: Short-Term Capital Gains
Line 11 reports the total short-term capital gains from federal Schedule D, line 7, plus any short-term gain from a partnership or trust K-1. Short-term means held one year or less. Marcus Thompson sold Tesla stock he held for 8 months at a $4,200 gain, so he writes 4200 on line 11.
The edge case is a wash sale disallowed federally that still gets disallowed in Massachusetts; the disallowed loss does not appear on line 11 and the basis adjusts forward. Another edge case is short-term gains from cryptocurrency, which Massachusetts treats as property under DOR Working Draft TIR 14-7.
A common mistake is including long-term gains here. The consequence is a 12% tax on income that should have been taxed at 5% on Schedule D, a costly self-inflicted overpayment. The misconception that all stock sales are short-term fails the holding-period rule.
Part 4, Line 12: Long-Term Gains on Collectibles and Pre-1996 Installments
Line 12 captures long-term gains from collectibles, defined to include works of art, rugs, antiques, metals, gems, stamps, coins, alcoholic beverages held as collectibles, and certain pre-1996 installment sale gains. Aisha Brown sold a 1916-D Mercury dime for a $3,000 long-term gain, so she writes 3000 on line 12.
The nuance is that collectibles held one year or less belong on line 11, not line 12. Another nuance is that Massachusetts uses the federal 28% collectibles definition under IRC § 408(m) to determine what qualifies, but applies its own 12% rate.
A common mistake is reporting collectible coin gains on Schedule D at 5% instead of Schedule B at 12%. The consequence is back tax plus interest under M.G.L. c. 62C § 32. The misconception that long-term means 5% in MA misses the collectibles carve-out.
Part 4, Line 13: Allowable Short-Term Capital Losses
Line 13 reports short-term capital losses from federal Schedule D, plus any K-1 short-term loss. Enter losses as positive numbers; the form formula handles the subtraction. Marcus Thompson had a $1,500 short-term loss on a Robinhood meme stock, so he writes 1500 on line 13.
The nuance is that Massachusetts caps net capital loss against ordinary income at $2,000, not the federal $3,000. The unused loss carries forward indefinitely, tracked on Schedule B and Schedule D in future years.
A common mistake is using the $3,000 federal cap. The consequence is an over-deduction that the DOR reverses, often years later when the carryover is audited. The misconception that MA follows the federal $3,000 rule costs filers a notice and interest.
Part 4, Line 14: Prior Year Short-Term Loss Carryovers
Line 14 enters short-term loss carryovers from prior Schedule B filings. Pull the figure from your prior-year Schedule B, line 39 or the carryover worksheet. Janet Park has a $750 carryover from her 2024 Schedule B, so she writes 750 on line 14.
The edge case is a part-year resident who became a Massachusetts resident mid-year. Only carryovers from years when you filed as a Massachusetts resident or sourced gains to Massachusetts apply.
A common mistake is forgetting carryovers entirely. The consequence is overpaying the 12% tax in the current year. The misconception that carryovers reset each year is dead wrong; they roll forward until used.
Part 4, Line 15: Subtotal
Line 15 combines lines 11, 12, 13, and 14 according to the form’s formula. Read the formula carefully because it adds gains and subtracts losses. Most filers let software handle this.
The nuance is that line 15 can go negative, which is the path to creating a current-year loss for carryover. A negative line 15 ultimately flows through to Schedule D and reduces 5% income up to the $2,000 cap.
A common mistake is mis-signing the result. The consequence is either a phantom 12% tax or a phantom carryover that the DOR will not honor in later years. Always double-check the sign.
Part 5, Line 16-22: Long-Term Capital Loss Application
These lines apply long-term capital losses, including carryovers, against short-term gains and collectibles gains. Massachusetts rules under M.G.L. c. 62 § 2(c) allow long-term losses to absorb 12% gains in a specific order. Software automates the ordering, but paper filers should follow the form’s worksheet line by line.
The nuance is the ordering rule: short-term losses first reduce short-term gains, then long-term losses reduce remaining short-term gains, then collectibles gains absorb leftover losses. Skipping a step shifts income between the 5% and 12% buckets.
A common mistake is applying long-term losses against 5% Schedule D income before exhausting them on Schedule B. The consequence is paying 12% on collectibles when you could have wiped them out with a long-term loss. The misconception that losses go wherever you want ignores the statutory ordering.
Part 6, Line 23-29: Excess Loss Treatment
These lines compute any excess capital loss that can offset 5% interest and dividend income up to $2,000. The remainder carries forward. This is the integration point between Schedule B and the rest of the Massachusetts return.
The nuance is that the $2,000 offset against 5% income is once per year, not per category. Married filing jointly couples share the $2,000 cap; they do not double it.
A common mistake is doubling the cap when filing jointly. The consequence is a DOR math correction. The misconception that each spouse gets $2,000 fails the joint cap rule.
Part 7, Line 30-39: 12% Tax Calculation and Carryovers
The final part computes the 12% tax on the net short-term gains and collectibles gains and lists carryovers to next year. Line 39 is the short-term loss carryover to next year, and line 38 is the long-term loss carryover. Both must be retained for prior-year reference.
The nuance is that Massachusetts allows a 50% deduction for net long-term capital gains in very limited cases under M.G.L. c. 62 § 2(b)(3), generally tied to certain small business stock. Most filers do not qualify.
A common mistake is forgetting to record the carryover figures, leaving next year’s return understated. The consequence is paying 12% tax that could have been wiped out. The misconception that you only need carryovers if you used them ignores that the DOR requires year-over-year continuity.
Signature and Date
Schedule B itself is not signed; your signature on Form 1 covers it. Make sure the schedule is stapled or e-attached to the main return so it travels together to the DOR’s processing center in Chelsea, Massachusetts.
The nuance is that e-filers do not attach physically; the software bundles Schedule B as an XML record submitted to MassTaxConnect. Paper filers must staple in the upper-left corner.
A common mistake is mailing Schedule B separately when an amendment requires it. The consequence is the schedule is filed under the wrong tax year. Always send it with the corresponding Form 1 or Form CA-6.
Three Filled-Out Examples Using Real Scenarios
Below are three end-to-end walkthroughs covering the most common Schedule B fact patterns.
Scenario 1: Linda, Age 68, Retired in Worcester
Linda is a single, full-year Massachusetts resident with bank interest from Eastern Bank, dividends from a Vanguard balanced fund, and a small amount of Treasury interest.
| Form Section | What Linda Enters |
|---|---|
| Header Name and SSN | LINDA SOUSA and 234-56-7890 |
| Line 1 Total Interest | 1180 |
| Line 2 Total Ordinary Dividends | 2240 |
| Line 3 Other Interest and Dividends | 0 |
| Line 4 Total | 3420 |
| Line 5 MA Bank Interest | 165 |
| Line 6 Other Deductions (Treasury) | 240 |
| Line 7 Subtotal after Deductions | 3080 |
| Line 10 Adjusted Interest and Dividends | 3080 |
| Line 11 Short-Term Gains | 0 |
| Line 30 12% Tax | 0 |
Linda copies 3080 to Form 1 line 20 and pays 5% on it.
Scenario 2: Marcus, Active Day Trader in Cambridge
Marcus is married filing jointly with his spouse, has heavy short-term trading, a collectibles sale, and a prior-year short-term loss carryover.
| Form Section | What Marcus Enters |
|---|---|
| Header Name and SSN | MARCUS THOMPSON and 345-67-8901 |
| Line 1 Total Interest | 420 |
| Line 2 Total Ordinary Dividends | 1850 |
| Line 4 Total | 2270 |
| Line 5 MA Bank Interest | 200 |
| Line 7 Subtotal | 2070 |
| Line 11 Short-Term Gains | 18400 |
| Line 12 Collectibles Long-Term Gains | 3000 |
| Line 13 Short-Term Losses | 4200 |
| Line 14 Prior ST Loss Carryover | 1500 |
| Line 30 12% Tax | computed at 12% × net 12% gain |
Marcus pays 5% on $2,070 and 12% on his net short-term and collectibles gain.
Scenario 3: Priya, Part-Year Resident Moving from Texas to Boston in July
Priya moved to Massachusetts on July 15 and files Form 1-NR/PY with Schedule B. Only income earned while a Massachusetts resident, plus Massachusetts-source income while a nonresident, is reported.
| Form Section | What Priya Enters |
|---|---|
| Header Name and SSN | PRIYA SHAH and 456-78-9012 |
| Line 1 Total Interest (MA period only) | 540 |
| Line 2 Total Ordinary Dividends (MA period) | 1100 |
| Line 4 Total | 1640 |
| Line 5 MA Bank Interest | 60 |
| Line 7 Subtotal | 1580 |
| Line 11 Short-Term Gains (MA period) | 2200 |
| Line 13 Short-Term Losses (MA period) | 400 |
| Line 14 Prior ST Loss Carryover | 0 |
| Line 30 12% Tax | computed on $1,800 net |
Priya prorates her interest and dividends to the days she was a Massachusetts resident, a method explained in Form 1-NR/PY instructions.
How to File the Completed Form
Schedule B never travels alone. It must be submitted with Form 1 or Form 1-NR/PY through one of the four DOR-approved channels.
Online via MassTaxConnect. Log into MassTaxConnect, choose File Return, and the system embeds Schedule B as you enter interest, dividend, and gain figures. There is no fee. Payment can be made by ACH debit, credit card (with a 2.35% processor fee), or by scheduling a future-dated debit. Processing time is 4 to 6 weeks for refunds, faster with direct deposit. Save the confirmation number as proof of filing.
Through approved tax software. TurboTax, H&R Block, TaxAct, FreeTaxUSA, and Drake all transmit Schedule B electronically through the IRS Modernized e-File system that the DOR participates in. Fees range from free (FreeTaxUSA state) to roughly $50 (TurboTax state). Refunds typically arrive in 3 to 4 weeks. Keep the e-file acceptance acknowledgment.
By paper mail. Print Form 1 and Schedule B, staple them together with the schedule behind Form 1, and mail to the DOR. If you owe tax, mail to Massachusetts DOR, PO Box 7003, Boston, MA 02204. If you expect a refund, mail to Massachusetts DOR, PO Box 7000, Boston, MA 02204. There is no fee, but include a check or money order payable to Commonwealth of Massachusetts. Processing time is 8 to 12 weeks. Use certified mail with return receipt as your proof of filing.
In person. Walk into a DOR walk-in service center in Boston, Springfield, Chelmsford, or Pittsfield with your completed Form 1 and Schedule B. Hand them to a representative who time-stamps your copy. There is no fee. Acceptable payments are check, money order, and credit card. Expect the same 8 to 12 week paper processing window.
What Happens After You File
Once Schedule B reaches the DOR, it enters automated processing where every line is recalculated against your federal Schedule B and Schedule D through IRS data sharing. The DOR runs a 1099 match against third-party reports filed by your banks and brokers. Mismatches over $50 generate a Request for Information letter, usually within 4 to 8 weeks of filing.
If your return is clean, the DOR issues a refund through direct deposit within 3 to 4 weeks of e-filing or up to 12 weeks for paper filing. You can track refund status on the Where’s My Refund tool inside MassTaxConnect. Refunds are subject to offset for back taxes, child support, and unpaid state debts under M.G.L. c. 62D.
If the DOR identifies a Schedule B error, you receive a Notice of Intent to Assess (NIA) detailing the change. You have 30 days to respond, agree, or file a Form CA-6 abatement application. After 30 days, the assessment becomes final and accrues interest at the federal short-term rate plus 4% under M.G.L. c. 62C § 32.
Audit selection is risk-based. Returns with high short-term gains, large collectibles gains, or sizable carryover losses face higher audit odds. Keep your 1099s, broker statements, and prior Schedule Bs for at least three years, and longer if you have unused capital loss carryovers.
Mistakes to Avoid When Filling Out the Form
These are the most common Schedule B errors that produce DOR notices.
- Treating qualified dividends as taxed at a lower rate, which causes underpayment because Massachusetts taxes them at 5%
- Including online-only bank interest on line 5, which leads to a deduction reversal and back tax
- Using the federal $3,000 capital loss cap instead of the Massachusetts $2,000 cap, producing an over-deduction
- Forgetting to carry over short-term and long-term losses from the prior year, which inflates the current-year 12% tax
- Reporting collectibles long-term gains on Schedule D at 5% instead of Schedule B at 12%, exposing back tax on audit
- Skipping U.S. Treasury interest on line 6, which costs you a Massachusetts deduction you are entitled to
- Doubling the $2,000 capital loss offset for joint filers, which the DOR reverses by math notice
- Applying long-term losses against 5% income before offsetting 12% gains, which is the wrong statutory order
- Leaving line 3 blank when you have under-threshold interest, triggering an underreporter notice
- Mailing Schedule B separately from Form 1, which causes a misfiled schedule and processing delays
- Entering negative numbers without the minus sign, which the DOR scanner reads as a positive
- Using prior-year Schedule B revisions, which apply outdated thresholds and rates
Do’s and Don’ts
The following best practices keep Schedule B clean and audit-resistant.
Do’s:
- Do reconcile every 1099 to the lines on Schedule B before submission, because the DOR matches third-party data
- Do round to whole dollars consistently, because mismatches between line 1 and line 4 trigger automated adjustments
- Do keep your prior-year Schedule B with carryover figures, because the DOR audits multi-year carryover continuity
- Do flag U.S. Treasury and U.S. agency interest separately in your notes, because the line 6 deduction is easy to miss
- Do use MassTaxConnect or commercial software for the math, because the multi-step capital loss ordering is error-prone
- Do staple Schedule B behind Form 1 if mailing, because loose schedules go missing in DOR mailrooms
Don’ts:
- Don’t include municipal bond interest on line 1, because it never reaches federal Schedule B
- Don’t deduct general investment management fees on line 9, because Massachusetts limits allowable deductions
- Don’t apply long-term losses against ordinary income before exhausting them against 12% gains
- Don’t skip filing Schedule B because you owe no tax, because reporting is still required when thresholds are met
- Don’t ignore K-1 interest and dividends, because pass-through income is fully reportable on Schedule B
- Don’t sign Schedule B; only Form 1 is signed, and a signed schedule confuses processing
Pros and Cons of Filing on Your Own vs. With Help
Pros of self-filing through software:
- Cost is $0 to $50 versus $200 to $500 for a CPA, which matters for simple returns
- Software automates the loss ordering and 12% calculation that paper filers get wrong
- E-filing produces a confirmation number that proves filing date for statute-of-limitations purposes
- You retain full control over data entry, reducing the chance of preparer transcription errors
- Most software offers a multi-year carryover tracker that survives platform changes via data export
Cons of self-filing:
- The collectibles definition under IRC § 408(m) confuses non-experts and produces tax errors
- Multi-state filers (part-year Massachusetts plus another state) often misallocate income between states
- K-1 interpretation is challenging when partnerships or S corporations source income across states
- DOR notices that arrive after filing require a knowledgeable response under tight 30-day deadlines
- Audit representation is not included with software, leaving you alone if the DOR opens an examination
A professional preparer becomes worth the cost once short-term gains exceed $25,000, K-1s appear, or you are a part-year resident with multi-state income.
Schedule B vs. Schedule D Quick Reference
| Massachusetts Schedule B | Massachusetts Schedule D |
|---|---|
| Reports interest, dividends, short-term gains, and collectibles long-term gains | Reports long-term capital gains other than collectibles |
| Income taxed at 5% on interest/dividends and 12% on short-term and collectibles | Income generally taxed at 5% |
| Loss carryover originates here for short-term losses | Long-term loss carryover tracked here |
| Required when interest + dividends exceed $1,500 | Required when long-term gains or losses exist |
| Flows to Form 1 line 20 (5%) and line 23 (12%) | Flows to Form 1 line 22 |
FAQs
Do I need to file Schedule B if I only earned $300 in bank interest?
No. Filing Schedule B is required only if your total interest and dividends (other than MA bank interest) exceed $1,500, or if you have any short-term gain, collectibles gain, or carryover loss to report.
Do I write my full legal name or my nickname in the header?
No. Use your full legal name exactly as it appears on your Social Security card; nicknames cause SSA-mismatch holds that delay refund processing by weeks.
Are qualified dividends taxed at a lower rate in Massachusetts?
No. Massachusetts taxes all ordinary dividends, including qualified dividends, at the 5% rate; the federal preferential qualified dividend rate does not apply.
Does interest from Ally Bank or Marcus by Goldman count as Massachusetts bank interest on line 5?
No. Online-only banks without a Massachusetts branch do not qualify for the $100/$200 line 5 deduction, regardless of where the account holder lives.
Is U.S. Treasury interest taxed in Massachusetts?
No. Direct U.S. Treasury interest is reported on line 1 then deducted on line 6, so it is not taxed by Massachusetts.
Do I report cryptocurrency gains on Schedule B?
Yes. Short-term cryptocurrency gains go on line 11 and are taxed at 12%; long-term crypto gains go on Schedule D at 5%.
Can I use the federal $3,000 capital loss cap on Schedule B?
No. Massachusetts caps the offset against ordinary income at $2,000, with the remainder carried forward indefinitely.
Do I include K-1 interest on Schedule B?
Yes. Interest, dividends, and short-term gains reported on a Schedule K-1 from a partnership, S corporation, trust, or estate flow onto Schedule B.
Are coin and stamp collection sales reported on Schedule B?
Yes. Long-term collectibles gains, including coins, stamps, art, and antiques, are reported on line 12 and taxed at the special 12% rate.
Do I write my MA bank interest on line 1 and line 5, or only line 5?
Yes. You write it on both; line 1 captures the gross amount and line 5 captures the qualifying MA bank portion that drives the deduction.
Can joint filers double the $2,000 capital loss offset?
No. The $2,000 cap applies once per return, regardless of filing status, and joint filers share it.
If I file Form 1-NR/PY, do I prorate Schedule B amounts?
Yes. Part-year residents include only Massachusetts-period interest and dividends, plus Massachusetts-source items earned while a nonresident.
Do I sign Schedule B separately from Form 1?
No. Schedule B is not separately signed; your signature on Form 1 covers all attached schedules.
What happens if I file Schedule B late?
Yes. Late filing triggers a 1% per month late-file penalty plus interest under M.G.L. c. 62B § 7, capped at 25% of unpaid tax.
Do I need to attach 1099-INT or 1099-DIV to Schedule B?
No. You do not attach the third-party forms; the DOR receives copies directly from issuers and matches them automatically.
Related reading
- How to Fill Out Massachusetts Form 1 (w/Examples) + FAQs
- How to Fill Out Massachusetts Form Schedule D (w/Examples) + FAQs
- How to Fill Out Massachusetts Form Schedule E (w/Examples) + FAQs
- How to Fill Out Massachusetts Form Schedule X (w/Examples) + FAQs
- How to Fill Out Massachusetts Form Schedule Y (w/Examples) + FAQs
- How to Fill Out Massachusetts Form Schedule Z (w/Examples) + FAQs