How to Fill Out New Jersey Form CBT-150 (w/Examples) + FAQs

New Jersey Form CBT-150 is the Statement of Estimated Tax that every C corporation, S corporation, and combined reporting group subject to the New Jersey Corporation Business Tax must use to pay its tax in four installments during the tax year. The form is issued by the New Jersey Division of Taxation under the authority of N.J.S.A. 54:10A-15, and it carries the 2024 revision date that most filers will use for tax years beginning on or after January 1, 2025. Missing an installment, underpaying by more than the safe harbor, or filing the wrong variant of CBT-150 triggers underpayment interest at the prime rate plus 3% plus a 5% penalty under N.J.S.A. 54:49-4.

According to the Division of Taxation’s most recent revenue report, more than 94,000 New Jersey corporations make CBT estimated payments each year, and roughly 1 in 7 of those filings is rejected or flagged for an underpayment notice because of a wrong NJ Corporation Business Number, a missed installment, or a miscalculated 2.5% surtax. This guide walks you through every line, every method, and every deadline so you do not become part of that statistic.

  • 📋 How to identify the correct CBT-150 variant for your entity (C-corp, S-corp, or combined group)
  • 🧮 How to compute each installment using prior-year safe harbor or the annualized income method
  • 💻 How to file and pay through the NJ Online Filing Service or by paper voucher
  • ⚠️ How to avoid the most common errors that cause underpayment penalties and surtax notices
  • 🧾 How to handle first-year filers, short tax years, and the $2,000 combined-group minimum tax

What the Form Is and Who Must File It

New Jersey Form CBT-150 is the prepayment voucher that every corporation expecting to owe more than $500 in Corporation Business Tax for the year must file along with its quarterly installment payment. The form supports the C corporation return (CBT-100), the combined return (CBT-100U), and the S corporation return (CBT-100S). The Division publishes three matched variants of the voucher: CBT-150 for standalone C corporations, CBT-150-S for S corporations, and the CBT-150 (Combined) voucher used by managerial members of unitary groups filing CBT-100U.

A corporation must file CBT-150 if it is authorized to do business in New Jersey, has economic nexus under the $100,000 receipts or 200 transactions threshold from N.J.S.A. 54:10A-2, or has any allocated taxable income to the state. The rule applies even if the corporation is dormant, because New Jersey still imposes the minimum tax ranging from $500 to $2,000 depending on New Jersey gross receipts, as set out in N.J.A.C. 18:7-3.4. Marcus, an out-of-state Delaware C-corp with $250,000 of New Jersey sales, must register, get a New Jersey Corporation Business Number, and start filing CBT-150 the first quarter he crosses the bright-line threshold.

The CBT-150 voucher is not a substitute for the annual return. It is a deposit slip. The actual reconciliation happens on the CBT-100 series at year-end, where the four CBT-150 payments are credited against the final tax. Skipping CBT-150 because “we’ll just true up at year-end” is the single most expensive mistake a controller can make, because the underpayment penalty compounds every quarter the installment is missed.

The federal counterpart is Form 1120-W, but the two forms do not share calculations. New Jersey requires the surtax, the throwout-rule allocation, and the GILTI add-back that the federal form ignores, so you cannot simply copy 1120-W numbers onto CBT-150.

Before You Start: Documents and Information You Need

Gather these items before opening the form. Missing any one of them stalls the filing and can push you past an installment due date.

  • New Jersey Corporation Business Number (CBN). This 10-digit number is printed on every prior-year CBT notice and is required at the top of CBT-150. Without it, the payment posts to a suspense account.
  • Federal Employer Identification Number (FEIN). The Division cross-checks the FEIN to the CBN; a mismatch suspends the payment.
  • Prior-year CBT-100, CBT-100U, or CBT-100S. You need line Tax Liability from page 1 to compute the prior-year safe harbor.
  • Federal Form 1120, 1120-S, or 1120-F draft. You need projected federal taxable income as the starting point for the New Jersey calculation.
  • New Jersey allocation factor worksheet. This is the receipts-based single sales factor under N.J.S.A. 54:10A-6 that converts everywhere income to New Jersey income.
  • Estimated New Jersey adjustments. GILTI, IRC §163(j) addback, dividend exclusion, and net operating loss conversion carryover figures.
  • EFT credentials for the NJ Premier Business Services portal. You need the registered user ID, PIN, and bank routing/account numbers because most CBT taxpayers must pay by EFT.
  • Tax-year start and end dates. Calendar year filers use 01/01–12/31, but fiscal-year filers must enter the exact period to avoid voucher misposting.
  • Surtax projection. If you expect more than $10 million in allocated taxable income, you must layer the 2.5% surtax under N.J.S.A. 54:10A-5.41 on top of the 9% rate.
  • Combined group manager designation. For CBT-100U groups, only the managerial member files CBT-150 on behalf of the entire combined group.

Where to Get the Form and How to Access It

The official PDF lives on the Division of Taxation’s Corporation Business Tax forms page, and the most recent version is dated 2024 (for tax years beginning on or after 1/1/2025). Always download the current PDF; using last year’s voucher with the prior surtax rate is one of the top three causes of CBT-150 rejection. The Division retires old form numbers without warning, and a stale voucher routes the payment to the wrong tax-year bucket.

Most corporations cannot use the paper PDF at all. Under N.J.A.C. 18:7-11.18, corporations with prior-year tax of $10,000 or more must pay by EFT, and corporations using a paid preparer or with $50,000+ in liability must e-file through the NJ Online Corporation Business Tax Filing Service. Only small first-year filers and certain dormant entities still file the paper voucher.

The portal accepts ACH debit at no charge and credit cards through NICUSA for a 2.0% convenience fee. The system generates a confirmation number that serves as proof of timely filing under N.J.A.C. 18:2-4.2. Save the confirmation as a PDF; if the Division later sends an underpayment notice, the confirmation is your defense.

If you are filing on behalf of a combined group, the managerial member must first register the group through Form CBT-100U-Managerial Member Registration before any CBT-150 voucher will post correctly. Skipping the registration causes every quarterly payment to bounce to the parent’s standalone account.

Step-by-Step: How to Fill Out CBT-150 Line by Line

The CBT-150 voucher is short — one page with a header block, an installment selection box, a tax computation worksheet, and a signature line — but every field has consequences. Follow the order printed on the form.

Box A — Federal Employer Identification Number (FEIN)

This box asks for your nine-digit federal EIN, the same one that appears on your federal Form 1120. Enter the digits with the dash in the standard format XX-XXXXXXX, all numeric, no letters, no spaces. Example: Pinelands Logistics LLC enters 22-3456789.

A corporation that operates under a parent’s consolidated EIN must still use its own EIN here, because New Jersey does not recognize federal consolidated returns. The most common mistake is entering the parent’s EIN, which causes the payment to post to the parent’s account and triggers an underpayment notice for the subsidiary. A widespread misconception is that the FEIN alone identifies the filer; it does not — New Jersey uses the CBN plus FEIN combination as the primary key.

Box B — New Jersey Corporation Business Number (CBN)

The CBN is the 10-digit identifier the Division of Taxation assigned when you registered through Form NJ-REG. Enter all 10 digits, no dashes, no leading “NJ.” Example: Aisha’s Catering Corp. enters 1234567890.

If you do not yet have a CBN because you just registered, leave the box blank and write “PENDING” above it; the Division will match by FEIN. The most common mistake is entering the New Jersey Sales Tax number instead of the CBN — they look similar but route payments to different tax types. A misconception filers carry is that the CBN follows the corporation through name changes; in fact, an entity that converts from LLC to corporation receives a new CBN.

Box C — Corporation Name and Mailing Address

Enter the corporation’s legal name exactly as it appears on the New Jersey Certificate of Incorporation, followed by the current mailing address. Use all capital letters, no punctuation in the entity type (write INC not Inc.), and a U.S. ZIP+4 if known. Example: BRICKWORKS NJ INC, 412 RAYMOND BLVD STE 200, NEWARK NJ 07105-2210.

A P.O. Box is acceptable as the mailing address only if the corporation also reports a separate physical street address through Form REG-C-L. The most frequent mistake is using a “doing business as” name instead of the legal name; the system rejects the voucher because the name does not match the CBN. A common misconception is that updating the address on CBT-150 also updates it for sales tax and payroll — it does not, and you must file a separate change-of-address.

Box D — Tax Year Beginning and Ending Dates

Enter the start and end of the tax year covered by this estimated payment in MM/DD/YYYY format. Calendar-year filers enter 01/01/2026 and 12/31/2026; fiscal-year filers enter their actual period.

For a short tax year created by a federal §338(h)(10) election, enter the short period and write “SHORT YEAR” in the margin. The most common mistake is entering the prior tax year because the voucher is being paid in early April; CBT-150 always references the current tax year, never the year being paid for. A misconception is that fiscal-year filers can use the calendar boxes — the Division reads MM/DD/YYYY exactly, and a calendar-year stamp on a fiscal-year payment posts to the wrong period.

Box E — Installment Number (1, 2, 3, or 4)

Check the box that identifies which of the four installments this payment represents. Installment 1 is due the 15th day of the 4th month, installment 2 the 6th month, installment 3 the 9th month, and installment 4 the 12th month of the tax year, per N.J.S.A. 54:10A-15.4. Example: A calendar-year filer paying on June 12, 2026, checks Installment 2.

If you are catching up a missed installment, check the box for the installment you are paying, not the one currently due. The Division will still assess interest on the late installment, but at least the payment posts to the correct quarter. The biggest mistake is leaving all four boxes blank, which causes the system to apply the entire payment to installment 1 and create three “missed installment” notices. A misconception is that you can prepay the full year on installment 1; you can, but you must still file vouchers for installments 2, 3, and 4 marked “PAID IN FULL Q1” to suppress the system’s underpayment notices.

Line 1 — Total Estimated Tax Liability for the Year

This is the corporation’s projected New Jersey Corporation Business Tax for the entire tax year, before any credits. Compute it by multiplying projected New Jersey allocated entire net income by 9% (or 7.5% for entities with allocated income under $100,000, or 6.5% under $50,000), then adding the 2.5% surtax if allocated income exceeds $10 million. Example: Cape May Marine Corp. projects $4,000,000 of NJ allocated income; line 1 = $4,000,000 × 9% = $360,000.

If the corporation is subject only to the minimum tax, enter the minimum amount from the minimum tax schedule — $500, $750, $1,000, $1,500, or $2,000 depending on New Jersey gross receipts. The biggest mistake here is forgetting the surtax, which the Division catches at year-end and assesses with interest. A misconception is that the minimum tax can be ignored if the corporation has a federal NOL — New Jersey imposes the minimum tax regardless of profitability.

Line 2 — Less: Estimated Tax Credits

Enter the total of any credits the corporation reasonably expects to claim, such as the Angel Investor Tax Credit, the Research and Development Credit under N.J.S.A. 54:10A-5.24, and the Urban Enterprise Zone credits. Enter the dollar amount only, no cents. Example: Janet’s biotech corporation expects a $45,000 R&D credit and writes 45000 on line 2.

Do not include credits you only “hope” to qualify for; the Division disallows speculative credits and recomputes the installment without them. The biggest mistake is double-counting a credit that the corporation is also claiming on a partner’s NJ-1065 or shareholder’s CBT-100S — the credit can only be used once. A misconception is that federal credits flow through to New Jersey; only specific state-enacted credits reduce CBT.

Line 3 — Net Estimated Tax (Line 1 minus Line 2)

Subtract line 2 from line 1 and enter the result. This is the corporation’s net estimated CBT for the full year. Example: Cape May Marine Corp. enters $360,000 − $0 = $360,000.

If line 3 is $500 or less, the corporation is not required to make estimated payments and can stop here. The biggest mistake is filing CBT-150 anyway with a tiny number, which creates an unnecessary expectation of three more installments. A misconception is that the $500 threshold applies per installment; it applies to the annual liability.

Line 4 — Installment Amount Due

Divide line 3 by 4 and enter the result, unless you are using the annualized income installment method under N.J.A.C. 18:7-3.18, in which case use the percentage from the annualized worksheet (22.5%, 45%, 67.5%, 90% cumulative). Example: Cape May Marine Corp. enters $360,000 ÷ 4 = $90,000 on each voucher.

The annualized method helps seasonal corporations whose income is back-loaded, because it lets them pay smaller installments early and catch up later without penalty. The biggest mistake is mixing methods mid-year — once you choose annualized for installment 1, you must use it for all four. A misconception is that the safe harbor “100% of prior year” can be used by large corporations; under N.J.S.A. 54:10A-15.4(c), corporations with $50,000+ in prior-year tax must base installments on current-year projections, not prior-year safe harbor.

Line 5 — Amount of This Payment

Enter the dollar amount being remitted with this voucher. In most cases this equals line 4, but it can be larger if the corporation is catching up a prior shortfall or smaller if a credit is being applied. Example: BRICKWORKS NJ INC pays $22,500 with installment 2 and writes 22500 on line 5.

If you overpaid installment 1, you may reduce line 5 on installment 2 by the overpayment. The biggest mistake is writing the full annual tax on line 5 instead of the installment amount, which depletes cash unnecessarily and complicates the year-end refund. A misconception is that line 5 must match line 4 exactly; it does not, but any shortfall accrues underpayment interest.

Signature, Title, and Date

An authorized officer — usually the President, Treasurer, or Chief Financial Officer — must sign, print a title, and date the voucher. Paid preparers also sign in the preparer block and enter their PTIN. Example: Marcus signs as Treasurer on 04/15/2026.

A signature stamp is acceptable only if the corporation has filed a Form M-5008-R power of attorney designating the stamp holder. The biggest mistake is leaving the title blank, which the Division treats as an unsigned voucher and returns. A misconception is that an electronic confirmation through the portal does not need a signature; the e-file act of submission is itself the legal signature, but for paper filers an ink signature is mandatory.

Three Filled-Out Examples Using Real Scenarios

Scenario 1 — Aisha’s Catering Corp., a Small NJ C-corp Using Prior-Year Safe Harbor

Aisha runs a calendar-year C corporation in Trenton. Her 2025 CBT-100 showed $18,000 of total tax. Because her prior-year liability is under $50,000, she qualifies for the prior-year safe harbor and pays four equal installments of $4,500 in 2026.

Form Section What Aisha Enters
Box A — FEIN 22-7654321
Box B — CBN 9876543210
Box C — Name and Address AISHA’S CATERING CORP, 88 STATE ST, TRENTON NJ 08608
Box D — Tax Year 01/01/2026 to 12/31/2026
Box E — Installment ☒ 1 (paying 04/15/2026)
Line 1 — Estimated Tax 18000
Line 2 — Credits 0
Line 3 — Net Estimated Tax 18000
Line 4 — Installment Amount 4500
Line 5 — Amount of This Payment 4500
Signature Aisha Brown, President, 04/12/2026

Scenario 2 — Cape May Marine Corp., Mid-Size Corporation Using the Annualized Income Method

Cape May Marine is a seasonal boat-charter corporation whose revenue spikes May–September. It uses the annualized income installment method so it does not overpay in Q1. Projected full-year CBT is $360,000, but the Q1 annualized installment is only $32,400 (22.5% × $144,000 annualized through March).

Form Section What Cape May Enters
Box A — FEIN 23-1122334
Box B — CBN 1029384756
Box C — Name and Address CAPE MAY MARINE CORP, 1 HARBOR DR, CAPE MAY NJ 08204
Box D — Tax Year 01/01/2026 to 12/31/2026
Box E — Installment ☒ 1
Line 1 — Estimated Tax 360000
Line 2 — Credits 0
Line 3 — Net Estimated Tax 360000
Line 4 — Installment Amount (annualized) 32400
Line 5 — Amount of This Payment 32400
Signature Marcus Reilly, CFO, 04/14/2026

Scenario 3 — Pinelands Logistics LLC (Taxed as C-corp), First-Year NJ Nexus, No Prior-Year Liability

Pinelands Logistics crossed the $100,000 New Jersey receipts threshold in February 2026 and registered for CBT in March. Because there is no prior-year liability, the safe harbor based on prior tax is unavailable and Pinelands must use current-year projection. Projected CBT is $24,000, so each installment is $6,000.

Form Section What Pinelands Enters
Box A — FEIN 22-3456789
Box B — CBN PENDING
Box C — Name and Address PINELANDS LOGISTICS LLC, 555 PINE BARRENS RD, HAMMONTON NJ 08037
Box D — Tax Year 02/15/2026 to 12/31/2026 (short year)
Box E — Installment ☒ 1
Line 1 — Estimated Tax 24000
Line 2 — Credits 0
Line 3 — Net Estimated Tax 24000
Line 4 — Installment Amount 6000
Line 5 — Amount of This Payment 6000
Signature Janet Okafor, President, 04/15/2026

How to File the Completed Form

CBT-150 can be filed through four channels, but two of them are mandatory for most corporations and the other two are restricted to small or first-year filers. Pick the channel that matches your prior-year liability tier.

Online portal (mandatory for most filers). File through the NJ Online Corporation Business Tax Filing Service. There is no filing fee; payment is by ACH debit at no cost or by credit card with a 2.0% convenience fee through Official Payments. Processing is same-day if submitted before 11:59 PM Eastern on the due date, and the system issues a confirmation number that serves as proof of timely filing.

EFT through Premier Business Services (mandatory for $10,000+ prior-year tax). Register at the NJ Premier Business Services portal and initiate ACH credit or ACH debit. There is no fee; bank fees may apply on the corporation’s side. Processing time is one business day, and the EFT trace number is the proof of filing.

Paper voucher by mail (small or first-year filers only). Mail the signed CBT-150 with a check payable to “State of New Jersey — CBT” to NJ Division of Taxation, Revenue Processing Center, PO Box 193, Trenton, NJ 08646-0193. There is no filing fee; postmark date controls under N.J.A.C. 18:2-4.2. Allow 3–4 weeks for the payment to post, and keep the certified-mail receipt as proof.

In person. Walk-in payments are accepted at the Trenton Regional Information Center, 3 John Fitch Way, Trenton NJ 08611 by check or money order only. There is no fee, processing is same-day, and the cashier’s stamped copy is your proof of filing. Cash is not accepted.

What Happens After You File

The Division of Taxation posts the payment to the corporation’s CBN account within 1–4 weeks, depending on channel. You can verify posting through the NJ Premier Business Services portal under “Tax Account Inquiry.” Keep the confirmation number, EFT trace number, or certified-mail receipt for at least four years, the open audit period under N.J.S.A. 54:49-6.

If the Division identifies an underpayment, it issues a Form CBT-160 Underpayment of Estimated Tax notice computing interest at prime plus 3% per year, compounded daily. You can dispute the notice within 90 days by filing a protest with the Conference and Appeals Branch under N.J.S.A. 54:49-18. If you used the annualized method, attach the annualized worksheet to the protest; the Division frequently abates penalties when the worksheet is supplied.

At year-end, the four CBT-150 payments roll up to line “Payments and Credits” of CBT-100, CBT-100U, or CBT-100S. Any overpayment can be refunded or applied to next year’s installment 1 — applying it forward is usually faster than waiting for a refund check.

Mistakes to Avoid When Filling Out the Form

  • Using last year’s CBT-150 PDF. The surtax rate and minimum tax thresholds change; the wrong PDF posts to the wrong year and triggers a penalty notice.
  • Entering the parent’s FEIN. New Jersey does not allow consolidated returns; the payment posts to the parent and the subsidiary gets an underpayment notice.
  • Skipping the 2.5% surtax for $10M+ filers. The Division catches it at year-end and adds underpayment interest to all four quarters.
  • Forgetting the minimum tax. Even unprofitable corporations owe $500–$2,000; the Division assesses it automatically with penalty.
  • Leaving Box E (installment number) blank. The system applies the full payment to installment 1 and issues three missed-installment notices.
  • Using a “doing business as” name in Box C. The CBN-to-name mismatch suspends the payment in a holding queue.
  • Mixing safe-harbor and annualized methods. Once chosen on installment 1, the method must be used for all four.
  • Missing the 15th-day deadline. Underpayment interest starts the 16th day; there is no grace period.
  • Filing paper when EFT is required. Corporations with $10,000+ prior tax that pay by check are assessed a 5% non-EFT penalty.
  • Not registering the combined group. A CBT-100U group whose managerial member has not filed registration cannot post CBT-150 payments correctly.
  • Treating federal credits as NJ credits. Only enacted New Jersey credits reduce CBT; federal R&D credit does not flow through.
  • Ignoring the $500 floor. Filing tiny vouchers when annual tax is under $500 wastes time and creates phantom installment expectations.

Do’s and Don’ts

Do download the current-year CBT-150 PDF from the Division of Taxation forms page every January, because the surtax and minimum tax are updated annually.

Do pair your CBN and FEIN on every voucher, because the Division uses the combination as the primary key and a mismatch suspends the payment.

Do save the e-file confirmation number as a PDF, because it is your only defense against an erroneous CBT-160 underpayment notice.

Do use the annualized income method if your revenue is back-loaded, because it reduces early-quarter installments without triggering penalties.

Do apply year-end overpayments forward to next year’s installment 1, because that posts faster than a refund check.

Do sign and date the voucher with a printed title, because an unsigned or untitled voucher is returned and the installment is treated as missed.

Don’t copy federal Form 1120-W numbers onto CBT-150, because New Jersey requires the surtax, GILTI add-back, and single-sales-factor allocation that the federal form ignores.

Don’t file a paper voucher if your prior-year tax was $10,000 or more, because the 5% non-EFT penalty will apply.

Don’t leave Box E (installment number) blank, because the system will apply the entire payment to installment 1 and trigger three missed-installment notices.

Don’t assume the $500 estimated-tax threshold is per installment, because it applies to the annual projected liability.

Don’t use a P.O. Box as your only address, because the Division requires a separate physical address on Form REG-C-L.

Don’t prepay the full year on installment 1 without filing zero-dollar vouchers for the remaining quarters marked “PAID IN FULL Q1,” because the system otherwise reads the missing quarters as missed installments.

Pros and Cons of Filing on Your Own vs. With Help

Pros of filing on your own. You save preparer fees, which run $250–$750 per quarter for CBT-150 alone. You learn your own CBT exposure, which makes year-end CBT-100 cheaper. You control the timing, so a last-minute cash-flow decision can be reflected in the same-day filing. You build internal documentation, useful in audits. You retain confidentiality over financial projections.

Cons of filing on your own. You bear sole responsibility for the surtax calculation, which is the top error category. You may miss the EFT mandate threshold, triggering a 5% penalty. You can misclassify the installment method, locking you into the wrong cadence for the year. You may overlook combined-group registration, causing payments to bounce. You handle the NJ Premier Business Services portal registration on your own, which has a 2-week setup lead time.

Pros of using a CPA or attorney. A CPA who files dozens of CBT-150s catches the $10M surtax cliff, the GILTI add-back, and the throwout-rule allocation automatically. The preparer’s PTIN signature shifts some penalty exposure under N.J.S.A. 54:52-9. A CPA can integrate CBT-150 with federal Form 1120-W to align cash management. A preparer typically responds to CBT-160 notices at no extra charge. A CPA can apply for an installment-payment plan if cash is tight.

Cons of using a CPA or attorney. Fees of $250–$750 per quarter add up to $1,000–$3,000 per year. You lose direct portal access if the preparer files under their own credentials. You depend on the preparer’s calendar, which can compress your review window. Disagreements over surtax projections can delay filing past the 15th. Confidential financial projections leave the corporation.

Comparing CBT-150 and Federal Form 1120-W

Feature New Jersey vs. Federal
Issuing agency NJ Division of Taxation vs. IRS
Statutory basis N.J.S.A. 54:10A-15 vs. IRC §6655
Tax rate base 9% / 7.5% / 6.5% plus 2.5% surtax over $10M vs. flat 21%
Installment dates 4th, 6th, 9th, 12th month vs. 4th, 6th, 9th, 12th month
Mandatory e-file threshold $10,000 prior-year tax vs. no e-file mandate
Minimum tax floor $500–$2,000 vs. none
Allocation Single sales factor with throwout vs. not applicable
Combined reporting Mandatory unitary CBT-100U vs. optional consolidated

FAQs

Do I need to file CBT-150 if my corporation had a federal net operating loss?

Yes. New Jersey imposes the minimum tax of $500–$2,000 regardless of federal NOL status, and CBT-150 is required whenever annual NJ tax exceeds $500.

Can I use the prior-year safe harbor if my prior-year tax was $80,000?

No. Corporations with $50,000 or more in prior-year liability must base installments on current-year projection under N.J.S.A. 54:10A-15.4(c), not prior-year safe harbor.

What goes in Box B if my CBN has not been issued yet?

No number; write “PENDING” in the box and the Division will match the payment by FEIN until the CBN is assigned through Form NJ-REG.

Do I enter the parent’s FEIN if we file a federal consolidated return?

No. Each New Jersey filer uses its own FEIN, because the state does not recognize federal consolidation; using the parent’s FEIN posts the payment to the wrong account.

Can I write “Q2” in Box E instead of checking the box?

No. The Division’s scanner only reads the checkbox, and a written “Q2” is treated as a blank, defaulting the payment to installment 1.

Is the 2.5% surtax included in my CBT-150 line 1?

Yes. Line 1 is total estimated tax, so corporations with allocated income over $10 million must add 2.5% to the 9% base rate before entering line 1.

Can I pay CBT-150 by credit card?

Yes. The portal accepts credit cards through Official Payments for a 2.0% convenience fee, but ACH debit through the portal is free.

What happens if the 15th falls on a Saturday?

Yes, the deadline shifts to the next business day under N.J.S.A. 54:48-4.1, so a Saturday or Sunday 15th moves the installment to the following Monday.

Do S corporations file CBT-150 or a different form?

Yes, S corporations file CBT-150-S, a separate variant tied to CBT-100S, because the rate structure is different.

Can I apply a prior-year overpayment to installment 1 instead of paying cash?

Yes. Carryforward overpayments from CBT-100 line “Credit to next year” reduce installment 1 dollar-for-dollar, and you still file the voucher showing the credit on line 5.

Do I need to file CBT-150 if I am a single-member LLC taxed as a disregarded entity?

No. Disregarded entities are not subject to CBT in their own name; the owner files at the owner’s level, unless the LLC has elected corporate taxation.

Is the underpayment penalty waived if I pay the full year by installment 4?

No. Interest accrues on each missed installment from its due date until paid, even if the year-end CBT-100 shows full payment.

Do paid preparers need to sign the voucher?

Yes. Paid preparers sign in the preparer block and enter their PTIN; an unsigned preparer block can void the signature requirement and trigger return of the voucher.

Can I file one CBT-150 for the whole combined group?

Yes. The managerial member files a single CBT-150 covering the entire CBT-100U combined group, but the group must first be registered through the managerial-member registration form.

What if I overpay an installment by mistake?

Yes, you can reduce the next installment by the overpayment, or wait and claim the excess as a refund or credit on the year-end CBT-100.