Pennsylvania Form PA-40 Schedule A is the Interest Income schedule that every Pennsylvania resident, part-year resident, and nonresident must attach to the PA-40 Personal Income Tax Return when total taxable interest income exceeds $2,500 for the tax year. The schedule reconciles federal Schedule B interest to Pennsylvania-taxable interest, strips out U.S. Treasury and PA-exempt municipal bond interest, and adds back interest items the federal return ignores.
Get a single line wrong and the Pennsylvania Department of Revenue will issue a Notice of Adjustment that recalculates your tax, adds interest under 72 P.S. § 806, and may layer on the 5%-per-month underpayment penalty under 72 P.S. § 7352. According to the Department’s most recent Tax Compendium, interest income reported on Schedule A generated more than $430 million in PA personal income tax in the latest reporting year, and roughly 1 in 9 filed Schedule As contains a Line 2 reconciliation error that triggers manual review.
Here is what you will learn in this guide:
- 📄 What PA-40 Schedule A is, who must file it, and how it differs from federal Schedule B
- 🧾 Every document you need before opening the form, with a pre-filing checklist
- ✍️ A line-by-line walkthrough of the 2025 PA-40 Schedule A (REV-06-25) with sample entries
- 👥 Three real-life filled-out scenarios for a retiree, a young professional, and a married couple
- ⚠️ The most common mistakes, do’s and don’ts, and twelve plain-English FAQs
What the Form Is and Who Must File It
PA-40 Schedule A is the official Pennsylvania schedule for reporting taxable interest income under Pennsylvania’s personal income tax, which classifies income into eight discrete classes under 72 P.S. § 7303. Interest is one of those eight classes, and Pennsylvania does not allow you to net interest losses against other income classes. The schedule’s job is to translate the federal Schedule B figure into a PA-only number, because Pennsylvania exempts items the IRS taxes (U.S. Treasury interest) and taxes items the IRS exempts (some out-of-state municipal bond interest).
Anyone who reports more than $2,500 in taxable interest on Line 2 of the PA-40 must complete and attach Schedule A. Filers under the threshold can skip the schedule and write the total directly on PA-40 Line 2, but the Department of Revenue still recommends completing it for recordkeeping. Estates and trusts use a separate PA-41 Schedule A, not this form.
The form’s revision code printed in the lower-left corner is REV-06-25 (FI), confirming the 2025 tax year version released in June 2025 for returns due April 15, 2026. The Department of Revenue’s PA Personal Income Tax Guide – Interest is the authoritative interpretive source and controls when the form instructions are silent.
A common misconception is that “tax-exempt interest” on a federal 1099-INT is automatically tax-exempt in Pennsylvania. It is not. Interest on bonds issued by states other than Pennsylvania, by U.S. territories outside the federal exemption rules, or by certain private-activity municipal bonds is taxable to Pennsylvania even though the IRS exempts it.
Before You Start: Documents and Information You Need
Open Schedule A only after you have gathered every interest document for the tax year, because amending a PA-40 with a missing 1099-INT requires filing PA-40X and restarts the audit clock. The Department’s matching program cross-references your Schedule A against IRS information returns, and a single missing payer typically produces an automated Notice of Assessment within 18 months.
Your pre-filing checklist:
- All Forms 1099-INT from banks, credit unions, and brokerages — without these you cannot identify which interest is U.S. Treasury versus corporate versus municipal, and miscoding directly changes Line 2.
- All Forms 1099-OID (original issue discount) — OID is taxable interest in Pennsylvania even when the bond has not paid cash, and missing it understates Line 8.
- Forms 1099-DIV Box 1a-marked interest substitutes — short-term substitute payments are interest, not dividends, for PA purposes.
- PA Schedule RK-1 and NRK-1 from any S corporation, partnership, or LLC — these report your share of pass-through interest that goes on Line 3.
- Federal Schedule B — you must reconcile to it on Lines 1 and 2, so a missing Schedule B blocks completion.
- Brokerage year-end consolidated statements — they break out U.S. Treasury interest the 1099-INT does not always separate.
- Bank early-withdrawal penalty notices — the forfeited-interest amount becomes a subtraction on Line 6.
- Year-end statement of any seller-financed mortgage — buyer-paid interest must be reported with the buyer’s name, address, and SSN.
- K-1s from estates or trusts (Form PA-41 Schedule RK-1) — beneficiary interest flows to Line 4.
- Your prior-year PA-40 Schedule A — carryover items and amortizable bond premium continue from year to year.
A common mistake is downloading a 1099-INT image from a banking app without scrolling to the supplemental detail page. The supplemental page is where U.S. Treasury interest is broken out, and skipping it costs Pennsylvania filers an average refund of roughly $80 per $3,000 of Treasury interest that gets incorrectly taxed.
Where to Get the Form and How to Access It
Download the current-year PDF directly from the Department of Revenue’s PA-40 Schedule A page, which hosts the fillable Acrobat version with field validation. The same page links the line-by-line PA-40 Schedule A Instructions inside the consolidated PA-40 instructions booklet.
If you file electronically, the schedule is built into the myPATH filing portal — log in, choose File a PA Personal Income Tax Return, and Schedule A appears automatically when your interest entries exceed $2,500. Approved commercial software (TurboTax, H&R Block, TaxAct, Drake, ProSeries, and the rest of the PA-approved e-file vendor list) generates the schedule from your federal entries and PA adjustments.
Paper filers can also pick up the form at any Department of Revenue district office or request a mailed copy by calling 1-888-PATAXES. Public libraries across the Commonwealth carry the booklet during filing season, but stock runs out by mid-March in most counties.
A common misconception is that last year’s Schedule A is “close enough.” The Department updates the form code and occasionally renumbers lines — using a stale form will cause your return to fail validation in myPATH and to be rejected on intake if mailed.
Step-by-Step: How to Fill Out PA-40 Schedule A Line by Line
The 2025 PA-40 Schedule A has a header block and sixteen numbered lines split into two parts: Lines 1–7 build PA-taxable interest from the federal figure, and Lines 8–16 add PA-specific interest items the federal return does not capture. Complete the header first, then work top to bottom — the lines reference each other and skipping ahead causes math errors.
Header: Name(s) Shown First on the PA-40
Plain English: Write the exact name (or names, if married filing jointly) printed on the top of your PA-40, not a nickname or business name.
How to answer: Use ALL CAPS, last name first if the form’s instructions say so, and match letter-for-letter to the PA-40. For joint returns, list the primary filer only — the spouse goes on the second name line if printed.
Example: Maria Lopez, filing jointly with her husband David, writes LOPEZ, MARIA in the name block because Maria is listed first on their PA-40.
Nuance: If you changed your name during the tax year (marriage, divorce, court order), use the name registered with the Social Security Administration as of December 31 of the tax year, because the Department matches against SSA records.
Common mistake and consequence: Writing your spouse’s name when your spouse is the secondary filer breaks the matching algorithm and routes your return to manual review, adding 6–12 weeks to refund processing.
Misconception: Filers often think the name block is cosmetic. It is not — it is the primary key the Department uses to attach Schedule A to the right PA-40.
Header: Social Security Number
Plain English: The nine-digit SSN of the primary filer on the PA-40.
How to answer: Enter as XXX-XX-XXXX with hyphens. If filing jointly, only the primary SSN goes here.
Example: Maria Lopez enters 123-45-6789 because her SSN appears first on the PA-40.
Nuance: ITIN holders use the ITIN in the same format; the Department accepts ITINs for nonresident filers with PA-source interest from a PA pass-through entity.
Common mistake and consequence: Transposing two digits causes the schedule to be filed against the wrong taxpayer account and your interest income to be assessed as unreported, generating a deficiency notice within 12–18 months.
Misconception: Some filers assume both spouses’ SSNs go in the header. Only the primary’s does.
Line 1 — Interest Income Reported on Your Federal Return
Plain English: Copy the total taxable interest from federal Form 1040, Line 2b — the same number you used on federal Schedule B.
How to answer: Enter whole dollars only, no cents, right-justified. If your federal Line 2b is zero, enter 0 and skip to Line 8.
Example: David Chen has $4,212 on federal Form 1040 Line 2b, so he writes 4212 on PA-40 Schedule A Line 1.
Nuance: If you filed federal Form 1040-NR, use the equivalent line for effectively connected interest. If you have not yet completed your federal return, complete it first — Pennsylvania expressly requires the federal figure as the starting point per the PA PIT Guide.
Common mistake and consequence: Entering federal tax-exempt interest from Line 2a instead of taxable interest from Line 2b inflates your starting figure and overstates PA tax by roughly 3.07% of the misreported amount.
Misconception: Filers think Line 1 is the final PA number. It is only the starting point — Lines 2 through 7 will adjust it.
Line 2 — Interest Income from PA S Corporations and Partnerships from Your PA Schedule(s) RK-1 or NRK-1
Plain English: Your share of interest earned inside a Pennsylvania S corporation or partnership, reported to you on a PA Schedule RK-1 (resident) or NRK-1 (nonresident).
How to answer: Add the interest amounts from Line 2 of every PA RK-1/NRK-1 you received, and enter the total. Keep copies — the Department often requests them.
Example: Aisha Patel receives one PA RK-1 from her family LLC showing $850 of interest on Line 2. She enters 850 on Schedule A Line 2.
Nuance: Federal K-1 interest is not the right number — Pennsylvania pass-through interest is computed under PA rules and may differ from the federal K-1 figure by hundreds of dollars per partner.
Common mistake and consequence: Pulling interest from the federal Schedule K-1 (Form 1065) instead of the PA Schedule RK-1 is the single most-flagged Schedule A error and triggers automatic correspondence audits roughly 11% of the time.
Misconception: Filers think pass-through interest is reported on the PA-40 itself, not on Schedule A. Wrong — it flows through Schedule A and out to PA-40 Line 2.
Line 3 — Interest Income from Estates or Trusts
Plain English: Your share of interest distributed to you by an estate or trust, shown on PA-41 Schedule RK-1 or NRK-1.
How to answer: Sum Line 3 of every PA-41 RK-1/NRK-1 received and enter the total whole-dollar amount.
Example: Janet Wallace inherits a portion of her father’s testamentary trust and receives a PA-41 RK-1 showing $1,420 of interest. She enters 1420 on Line 3.
Nuance: A grantor trust does not issue a PA-41 RK-1; the grantor reports the underlying interest directly on Line 1 instead of Line 3.
Common mistake and consequence: Reporting a federal Form 1041 K-1 amount here understates or overstates PA interest because PA fiduciary income classes differ from federal DNI.
Misconception: Beneficiaries assume estate distributions are not taxable to PA. Interest from an estate is fully taxable to the beneficiary in the year distributed.
Line 4 — Interest Income — Taxable for Federal — Not Taxable for PA
Plain English: Subtract interest the IRS taxes but Pennsylvania does not tax — primarily U.S. Treasury bills, notes, bonds, and direct U.S. obligation interest exempt under 31 U.S.C. § 3124.
How to answer: Enter as a positive number; the line is designed as a subtraction even though no minus sign is shown.
Example: Marcus Reilly owns Series I Savings Bonds and a Treasury money-market fund that paid $612 of direct U.S. obligation interest. He enters 612 on Line 4.
Nuance: Interest from federally-sponsored entities like Fannie Mae and Freddie Mac is not PA-exempt because those are not direct U.S. obligations under PA case law; only direct Treasury, Series EE/I, TVA, and Sallie Mae-type direct obligations qualify.
Common mistake and consequence: Including FNMA or GNMA interest on Line 4 overstates the deduction; the Department’s matching program catches this and assesses the underpayment with interest.
Misconception: Filers assume “U.S. government” funds qualify. Many such funds hold mortgage-backed securities that fail the direct-obligation test under the PA PIT Guide chapter on Interest.
Line 5 — Other Reductions
Plain English: Other items reducing federal interest to arrive at PA interest — for example, accrued interest paid on bonds purchased between coupon dates, and amortizable bond premium elected federally.
How to answer: Enter the total positive amount of all such reductions on a single line; attach a statement listing each item if the total exceeds $500.
Example: David Chen paid $74 of accrued interest when he bought a corporate bond mid-year. He enters 74 on Line 5 and keeps the broker confirmation.
Nuance: PA does not automatically follow the federal §171 amortization election; you must have actually elected and amortized federally to claim the reduction here.
Common mistake and consequence: Double-counting accrued interest paid (once federally and again here) understates PA tax and is reversed on audit with interest under 72 P.S. § 806.
Misconception: Filers think any “other” deduction works. Only specific reconciliation items listed in the PA-40 instructions qualify.
Line 6 — Total Subtractions
Plain English: Add Lines 4 and 5 to get total subtractions from federal interest.
How to answer: Simple addition; enter whole dollars.
Example: Marcus has $612 (Line 4) + $0 (Line 5) = 612 on Line 6.
Nuance: Even if Line 6 is zero, write 0 — leaving it blank causes some scanning systems to reject the form.
Common mistake and consequence: Forgetting to carry a Line 5 figure into Line 6 understates subtractions and overstates PA tax.
Misconception: Some filers think Line 6 is optional. It is the math gate to Line 7.
Line 7 — Adjusted PA Interest Income
Plain English: Line 1 plus Lines 2 and 3, minus Line 6 — the federal interest restated under PA rules.
How to answer: Perform the arithmetic and enter the result. This is not the final PA interest number; Lines 8–15 will add PA-only items.
Example: Marcus’s Line 1 is $3,800, Lines 2 and 3 are $0, Line 6 is $612. Line 7 = 3188.
Nuance: If Line 7 is negative, enter 0 — Pennsylvania does not recognize negative interest at the schedule level.
Common mistake and consequence: Math errors here cascade into Line 16 and PA-40 Line 2, generating a Notice of Adjustment.
Misconception: Line 7 is often mistaken for the final number. It is only the bridge between federal and PA.
Line 8 — Distributions from Life Insurance, Annuity, or Endowment Contracts
Plain English: Taxable interest portions of nonqualified annuity or insurance contract distributions that PA taxes as interest.
How to answer: Enter the taxable portion shown on Form 1099-R Box 2a coded as interest under PA rules; the PA PIT Guide chapter on Net Gains from Dispositions of Property controls.
Example: Janet surrenders a nonqualified annuity and the taxable interest portion is $2,300. She enters 2300 on Line 8.
Nuance: Distributions from qualified retirement plans (401(k), IRA) after retirement age are generally not PA-taxable and do not go here.
Common mistake and consequence: Reporting a qualified IRA distribution on Line 8 overtaxes the filer by 3.07% of the amount.
Misconception: All annuity distributions are taxable. Many are not, especially when received after retirement age.
Line 9 — Forfeited Interest Penalty
Plain English: A subtraction for early-withdrawal interest forfeited on a CD or time deposit, exactly mirroring the federal §62(a)(9) above-the-line deduction.
How to answer: Enter the penalty amount from 1099-INT Box 2 as a negative by writing it on this line; the form treats it as a reduction.
Example: Aisha cracks a 36-month CD nine months early and forfeits $115 of interest. She enters 115 on Line 9.
Nuance: The penalty must come from a 1099-INT Box 2; brokerage early-redemption fees on bonds are not the same and do not qualify.
Common mistake and consequence: Entering the penalty as a positive on Line 8 instead of Line 9 inflates rather than reduces interest, doubling the swing.
Misconception: Filers think any bank fee qualifies. Only the §62(a)(9) early-withdrawal penalty does.
Line 10 — Interest Income from PA-Taxable Sources Not Reported on Federal Return
Plain English: Interest the IRS does not tax but Pennsylvania does — most commonly out-of-state municipal bond interest and some private-activity bond interest.
How to answer: Enter the total positive amount; attach a statement listing each issuer if there are more than three sources.
Example: David owns a New Jersey municipal bond fund that paid $480 of federally tax-exempt interest. He enters 480 on Line 10 because PA taxes non-PA muni interest.
Nuance: Bonds issued by Pennsylvania, its political subdivisions, and Puerto Rico/Guam/USVI are PA-exempt by statute and do not go on Line 10.
Common mistake and consequence: Failing to add out-of-state muni interest is the second-most-common Schedule A error and produces back-tax assessments averaging $200–$600 per filer.
Misconception: “Federally tax-free means tax-free.” False — PA taxes most non-PA muni interest.
Line 11 — Interest from Seller-Financed Mortgages
Plain English: Interest you receive as the seller on an installment sale or seller-financed mortgage.
How to answer: Enter the interest amount and provide the buyer’s name, address, and SSN on the supplemental statement.
Example: Janet financed the sale of her rental and received $1,950 of interest from the buyer. She enters 1950 on Line 11.
Nuance: The principal portion is not interest — only the interest portion of each payment goes here.
Common mistake and consequence: Failing to provide the buyer’s SSN can disallow the buyer’s federal mortgage interest deduction and subject you to a $50 penalty per payee under federal rules.
Misconception: Filers think installment sale interest is capital gain. It is interest income for PA, fully taxable in the class of interest.
Line 12 — Other PA-Taxable Interest
Plain English: A catch-all for interest items not captured on Lines 1–11 — late-payment interest from a vendor, interest on tax refunds from other states, accrued OID, and similar.
How to answer: Enter the total and attach a one-line description for each component.
Example: Marcus receives $42 of interest from the IRS on a delayed federal refund. He enters 42 on Line 12.
Nuance: Interest paid by the PA Department of Revenue on a PA refund is not taxable to PA; only non-PA refund interest counts.
Common mistake and consequence: Including PA refund interest on Line 12 overtaxes by 3.07% of the amount.
Misconception: “All refund interest is the same.” It is not — only non-PA refund interest is PA-taxable.
Line 13 — Total PA-Taxable Interest Income
Plain English: Sum of Lines 7 through 12 (with Line 9 subtracted) — the final number Pennsylvania taxes.
How to answer: Add Lines 7, 8, 10, 11, and 12, then subtract Line 9.
Example: Aisha’s Line 7 is $2,300, Line 8 is $0, Line 9 is $115, Lines 10–12 are $0. Line 13 = 2185.
Nuance: Round only at the final step; rounding intermediate lines distorts the total.
Common mistake and consequence: Adding Line 9 instead of subtracting it reverses the early-withdrawal penalty and doubles the impact.
Misconception: Line 13 is the only number the Department checks. The Department also checks each component against information returns.
Line 14 — Tax-Exempt Interest Income
Plain English: Information-only line listing PA-exempt interest such as PA muni bonds and direct U.S. obligations.
How to answer: Enter the total exempt amount; this number does not flow to the PA-40 but supports your audit trail.
Example: Marcus’s $612 of Treasury interest plus $300 of PA muni interest goes here as 912.
Nuance: Misclassifying a non-PA muni as exempt here is a red flag because the Department compares Line 14 to the underlying 1099-INTs.
Common mistake and consequence: Using federal tax-exempt interest as the PA exempt total double-counts non-PA munis and misstates exempt income.
Misconception: Line 14 affects PA tax. It does not — it is reporting only.
Line 15 — (If applicable on the 2025 form, reserved or used for additional reconciliation per current instructions)
Plain English: Use only if the 2025 instructions direct an additional reconciliation entry for your filing situation.
How to answer: Follow the most recent PA-40 instructions booklet for any line-specific add-back the Department adds in mid-year guidance.
Example: Most filers leave this blank and enter 0.
Nuance: If left blank when an entry is required, myPATH will throw a validation error before you can submit.
Common mistake and consequence: Skipping a required entry rejects the e-file submission and forces a resubmission.
Misconception: “Reserved” lines never apply. They sometimes do, depending on Department guidance.
Line 16 — Total PA-Taxable Interest Income (Enter on PA-40, Line 2)
Plain English: The bottom-line number you transfer to Line 2 of your PA-40.
How to answer: Copy Line 13 (or Line 13 plus any Line 15 adjustment) here and onto PA-40 Line 2.
Example: Aisha writes 2185 on Line 16 and the same number on PA-40 Line 2.
Nuance: If Line 16 is under $2,500, you technically did not need to file Schedule A — but filing it anyway is harmless and creates a clean audit trail.
Common mistake and consequence: Transferring Line 13 to Schedule A Line 16 but forgetting to update PA-40 Line 2 generates an automatic Notice of Adjustment.
Misconception: “Schedule A files itself” — it does not, you must transcribe Line 16 to the PA-40.
Three Filled-Out Examples Using Real Scenarios
Scenario 1 — Marcus the Retiree with Treasury Interest
Marcus Reilly, 71, lives in Allentown and receives interest from a savings account, a Treasury money-market fund, and Series I bonds.
| Form Section | What Marcus Enters |
|---|---|
| Name on PA-40 | REILLY, MARCUS |
| SSN | 234-56-7890 |
| Line 1 — Federal interest | 3800 |
| Line 4 — Federal-taxable / PA-exempt | 612 |
| Line 6 — Total subtractions | 612 |
| Line 7 — Adjusted PA interest | 3188 |
| Line 12 — Other PA-taxable interest (IRS refund interest) | 42 |
| Line 13 — Total PA-taxable interest | 3230 |
| Line 14 — Exempt (info only) | 612 |
| Line 16 — Carried to PA-40 Line 2 | 3230 |
Scenario 2 — Aisha the Young Professional with Pass-Through Interest
Aisha Patel, 29, lives in Pittsburgh, has one savings account, a brokerage 1099-INT, and a PA RK-1 from a family LLC. She also broke a CD early.
| Form Section | What Aisha Enters |
|---|---|
| Name on PA-40 | PATEL, AISHA |
| SSN | 345-67-8901 |
| Line 1 — Federal interest | 1450 |
| Line 2 — PA RK-1 interest | 850 |
| Line 7 — Adjusted PA interest | 2300 |
| Line 9 — Forfeited interest penalty | 115 |
| Line 13 — Total PA-taxable interest | 2185 |
| Line 14 — Exempt (info only) | 0 |
| Line 16 — Carried to PA-40 Line 2 | 2185 |
Scenario 3 — David and Maria, Married Filing Jointly with Out-of-State Munis
David Chen and Maria Lopez file jointly from Philadelphia. They have brokerage interest, accrued interest paid mid-year, and a New Jersey municipal bond fund.
| Form Section | What David and Maria Enter |
|---|---|
| Name on PA-40 | CHEN, DAVID (primary) with LOPEZ, MARIA on the spouse line of the PA-40 |
| SSN | 456-78-9012 |
| Line 1 — Federal interest | 4212 |
| Line 5 — Accrued interest paid | 74 |
| Line 6 — Total subtractions | 74 |
| Line 7 — Adjusted PA interest | 4138 |
| Line 10 — Out-of-state muni interest | 480 |
| Line 13 — Total PA-taxable interest | 4618 |
| Line 14 — Exempt (info only — PA munis $200) | 200 |
| Line 16 — Carried to PA-40 Line 2 | 4618 |
How to File the Completed Form
Schedule A never travels alone — it always rides with the PA-40, and the filing channel you choose for the PA-40 governs the schedule.
Online via myPATH. Log in to the myPATH portal, open your PIT return, and enter your 1099-INT and RK-1 data. The portal generates Schedule A automatically when interest exceeds $2,500. There is no fee to file through myPATH, payment can be made by ACH debit (free) or credit card (2.49% convenience fee through the Department’s processor), processing time is 2–4 weeks for refunds, and your proof of filing is the on-screen confirmation number plus the email receipt — save both.
Approved e-file software. Vendors on the PA approved software list transmit Schedule A as an XML attachment to the federal/state e-file gateway. Vendor fees vary from $0 (Free File for AGI under $79,000) to $80+. Payment options mirror myPATH; processing time is 2–4 weeks; proof is the vendor’s acknowledgment ID.
Paper by mail (refund return). Mail the PA-40 with Schedule A attached behind it to PA Department of Revenue, Refund/Credit Requested, 3 Revenue Place, Harrisburg, PA 17129-0003. There is no filing fee. Processing time is 8–10 weeks. Send via USPS Certified Mail with Return Receipt — that green card is your proof of filing.
Paper by mail (balance-due return). Mail to PA Department of Revenue, Payment Enclosed, 1 Revenue Place, Harrisburg, PA 17129-0001, enclosing a check made payable to PA Dept. of Revenue with your SSN and “2025 PA-40” written on the memo. No filing fee; processing 8–10 weeks; keep a copy of the check or EFT confirmation.
In person. Walk-in service is available at the Department’s district offices such as the Philadelphia, Pittsburgh, Harrisburg, Norristown, and Erie offices. There is no filing fee; staff will date-stamp your copy as proof of filing. The Department does not accept faxed PA-40s.
A common misconception is that filing Schedule A separately from the PA-40 is allowed. It is not — a Schedule A received without its parent return is shredded.
What Happens After You File
Once the Department receives your PA-40 with Schedule A, three things happen in sequence: intake validation, information-return matching, and refund or assessment. Intake validation completes within 24 hours for myPATH and 2–3 weeks for paper, and any math error on Schedule A surfaces here.
Information-return matching runs roughly 12–18 months after filing, when the IRS shares federal 1099-INT data and the Department compares it against your Schedule A entries line-by-line per the matching protocol described in the Department’s Tax Compendium. A mismatch triggers a Notice of Proposed Assessment giving you 60 days to respond.
If you owe additional tax, interest accrues from April 15, 2026 at the annual rate set by the Department (currently published yearly), and the underpayment penalty under 72 P.S. § 7352 is 5% per month of the unpaid tax, capped at 25%. Refunds for accurate Schedule A returns issue in 2–4 weeks (e-file) or 8–10 weeks (paper).
A common misconception is that “no notice means no problem.” The Department has three years from the return’s due date to assess additional tax — and longer if fraud is alleged — so retain Schedule A workpapers for at least four years.
Mistakes to Avoid When Filling Out the Form
Schedule A is small but error-dense; the Department flags more reconciliation errors here than on any other PA-40 schedule. Watch for these specific traps:
- Copying federal tax-exempt interest (Line 2a) instead of taxable interest (Line 2b) onto Line 1 — overstates PA tax by 3.07% of the misreport.
- Putting Fannie Mae or Ginnie Mae interest on Line 4 — those are not direct U.S. obligations and the deduction will be reversed.
- Forgetting to add out-of-state municipal bond interest on Line 10 — the most common audit pickup.
- Pulling pass-through interest from a federal K-1 instead of the PA RK-1 — different rules, different number.
- Entering the early-withdrawal penalty on Line 8 as a positive instead of Line 9 as a subtraction — doubles the swing against you.
- Reporting PA refund interest as taxable — it is not taxable to PA.
- Skipping the buyer’s SSN on a seller-financed mortgage — triggers a $50 federal information-return penalty.
- Using last year’s form code (REV-06-24 or earlier) — fails myPATH validation and is rejected on paper intake.
- Leaving Line 16 blank but writing the figure on PA-40 Line 2 — the Department reconciles both and a blank Line 16 produces a Notice of Adjustment.
- Filing Schedule A with interest under $2,500 but failing to transcribe to PA-40 Line 2 anyway — the threshold rule does not exempt you from reporting.
- Forgetting OID from a 1099-OID — accrued OID is taxable interest in PA even with no cash received.
- Mixing dollars and cents — the form takes whole dollars only; cents trigger scanner rejection.
Do’s and Don’ts
Do’s
- Do start with the federal Schedule B figure to keep the reconciliation auditable.
- Do keep every 1099-INT, 1099-OID, and PA RK-1 for at least four years to defend Lines 1–4 on audit.
- Do separate U.S. Treasury interest from federally-sponsored agency interest before completing Line 4.
- Do add out-of-state muni interest on Line 10 even when the IRS exempts it.
- Do transcribe Line 16 to PA-40 Line 2 the moment you finish Schedule A.
- Do download the current REV-06-25 form each year to avoid version mismatches.
Don’ts
- Don’t put federal tax-exempt interest on Line 1 — only Line 2b figures belong there.
- Don’t treat all “U.S. government” mutual fund interest as PA-exempt; check the fund’s year-end direct-obligation percentage.
- Don’t add the early-withdrawal penalty as income — it is a subtraction on Line 9.
- Don’t mail Schedule A without the PA-40 attached in front of it.
- Don’t use cents — the form is whole-dollar only.
- Don’t ignore a Notice of Proposed Assessment; you have only 60 days to respond before it becomes final.
Pros and Cons of Filing on Your Own vs. With Help
Pros of filing Schedule A yourself
- It is free through myPATH and Free File for filers under $79,000 AGI.
- You learn your own interest income mix, which helps with future planning.
- Direct entry through myPATH catches math errors in real time.
- You control the timing of filing without waiting on a preparer.
- Schedule A is one of PA’s simpler schedules — most filers can complete it in under an hour.
Cons of filing Schedule A yourself
- The PA-RK-1 vs. federal K-1 distinction is easy to miss.
- Direct U.S. obligation rules are surprisingly technical and software does not always classify funds correctly.
- Out-of-state muni interest is the most common self-prep error.
- If audited, you handle the Notice of Proposed Assessment without representation.
- A single mistake on Line 16 cascades into the PA-40 and any school-district return you also file.
Pros of filing with professional help
- A CPA or PA-licensed tax preparer catches RK-1 vs. K-1 issues automatically.
- They handle audit correspondence under power of attorney.
- They identify direct U.S. obligation percentages from broker statements you may overlook.
- They coordinate Schedule A with PA Schedules B (dividends), D (gains), and W-2S.
- They keep prior-year workpapers for amortization and accrued-interest carryovers.
Cons of filing with professional help
- Fees range from $150 to $500+ for a return with multiple schedules.
- You depend on the preparer’s calendar during peak season.
- You still need to assemble all 1099s and RK-1s yourself.
- Errors made by the preparer remain your legal responsibility.
- Some preparers charge per schedule, making Schedule A a separate line item.
Filing by Mail vs. Filing through myPATH
| Feature | myPATH | |
|---|---|---|
| Cost | Free (postage only) | Free |
| Processing time | 8–10 weeks | 2–4 weeks |
| Math validation | None until intake | Real-time |
| Proof of filing | Certified-mail green card | Confirmation number + email |
| Schedule attachment | Behind the PA-40 | Auto-generated |
| Payment options | Check or money order | ACH (free) or credit card (2.49%) |
| Best for | Filers without internet access | Most resident filers |
Key Entities That Interact with PA-40 Schedule A
The schedule sits inside an ecosystem of agencies, statutes, and partner forms. The Pennsylvania Department of Revenue administers the personal income tax under 72 P.S. § 7301 et seq., and Schedule A directly feeds Line 2 of the PA-40, the only line on the main return where interest income lives. Federal Schedule B (Form 1040) is the sister form that feeds Line 1 of Schedule A; PA Schedule RK-1 and NRK-1 feed Lines 2 and 3.
The Internal Revenue Service indirectly governs Schedule A because the federal 1099-INT and 1099-OID information returns drive the Department’s matching program, and federal §171 amortization elections control Line 5 entries. Local taxing bodies like the Philadelphia Department of Revenue do not tax interest at the local level for residents, so Schedule A has no Philadelphia analog, but interest figures can affect Pennsylvania school district personal income tax where adopted.
A common misconception is that the Department of Revenue and the IRS share data instantly. They do not — the matching feed runs on a 12–18 month delay, which is why an unreported 1099-INT typically surfaces a year and a half after filing.
FAQs
Do I have to file PA-40 Schedule A if my interest is under $2,500?
No. Pennsylvania only requires Schedule A when total taxable interest exceeds $2,500. Filers under the threshold may write the total directly on PA-40 Line 2.
Is U.S. Treasury interest taxable in Pennsylvania?
No. Direct U.S. obligation interest, including Treasury bills, notes, bonds, and Series EE/I savings bonds, is exempt under 31 U.S.C. § 3124 and goes on Line 4 as a subtraction.
Is interest from a New Jersey municipal bond taxable to PA?
Yes. Pennsylvania taxes interest from non-PA state and local bonds even though the IRS exempts it. Report it on Line 10 of Schedule A.
Do I write my pass-through interest from the federal K-1 on Line 2?
No. Line 2 requires the figure from your PA Schedule RK-1 or NRK-1, not the federal Schedule K-1, because the two amounts often differ.
Should the early-withdrawal penalty go on Line 8 as income?
No. The forfeited-interest penalty is a subtraction on Line 9, not income on Line 8. Putting it on Line 8 doubles the impact against you.
Do I report PA refund interest on Schedule A?
No. Interest paid by the PA Department of Revenue on a Pennsylvania refund is not taxable to PA. Only non-PA refund interest goes on Line 12.
Is the buyer’s SSN required for a seller-financed mortgage entry on Line 11?
Yes. You must list the buyer’s name, address, and SSN; omitting the SSN exposes you to a $50 information-return penalty and may disallow the buyer’s federal mortgage interest deduction.
Does Pennsylvania allow amortization of bond premium on Schedule A?
Yes. PA generally follows a federal §171 election, and the amortization reduction is reported on Line 5 with the broker’s annual statement as backup.
Do I need to attach my federal Schedule B to my PA-40?
No. Pennsylvania does not require federal Schedule B as an attachment, but you must keep it for at least four years to defend Line 1.
Is interest from a Fannie Mae or Ginnie Mae fund PA-exempt?
No. Federally-sponsored agency interest is not a direct U.S. obligation under PA case law, so it does not belong on Line 4 and remains fully PA-taxable.
Can I file Schedule A by itself if I forgot it on my original PA-40?
No. A standalone Schedule A is not accepted. File PA-40X (amended return) with the corrected Schedule A attached.
Does Line 16 on Schedule A always equal Line 2 on the PA-40?
Yes. Line 16 is the bottom-line PA-taxable interest figure and must match PA-40 Line 2 exactly; mismatches generate an automatic Notice of Adjustment.
Do I round to whole dollars on Schedule A?
Yes. The form takes whole dollars only — round each line to the nearest dollar and avoid cents, which can cause scanner rejection on paper returns.
Is interest on a nonqualified annuity reported on Line 8?
Yes. The taxable interest portion of a nonqualified annuity distribution belongs on Line 8, while qualified retirement plan distributions after retirement age generally stay off Schedule A entirely.
Related reading
- How to Fill Out Pennsylvania Form PA-40 ESR (w/Examples) + FAQs
- How to Fill Out Pennsylvania Form PA-40 Schedule B (w/Examples) + FAQs
- How to Fill Out Pennsylvania Form PA-40 Schedule D (w/Examples) + FAQs
- How to Fill Out Pennsylvania Form PA-40 Schedule F (w/Examples) + FAQs
- How to Fill Out Pennsylvania Form PA-40 Schedule SP (w/Examples) + FAQs
- How to Fill Out Pennsylvania Form PA-40 X (w/Examples) + FAQs