In This Article
- Why Does a NJ-Specific Tax Calendar Matter for Businesses?
- What Are the Individual Tax Deadlines for 2026?
- What Are the Business Tax Deadlines for 2026?
- What Are the Quarterly Estimated Tax Payment Deadlines for 2026?
- What Are the Payroll Tax Deadlines for 2026?
- What NJ-Specific Tax Deadlines Do Businesses Most Commonly Miss?
- What Penalties Apply If You Miss a Federal or NJ Tax Deadline?
- Sources and References
- Frequently Asked Questions
- Ready to File With Confidence?
Why Does a NJ-Specific Tax Calendar Matter for Businesses?
New Jersey doesn't always conform to federal tax deadlines. The NJ BAIT election has its own deadline. NJ estimated taxes have unique rules. NJ business tax returns (CBT) have different deadlines from federal. And several NJ-specific programs (ANCHOR, BAIT, NJ Charitable Registration) have deadlines that fall at unexpected times of year.
This calendar compiles every major tax deadline for NJ individuals and businesses in 2026. So you can plan ahead, avoid penalties, and never miss an extension.
What Are the Individual Tax Deadlines for 2026?
| Deadline | Date | What's Due |
|---|---|---|
| Federal 1040 (no extension) | April 15, 2026 | Federal individual income tax return |
| NJ-1040 (no extension) | April 15, 2026 | NJ individual income tax return |
| Federal 1040 extension | April 15, 2026 | File Form 4868 for automatic 6-month extension (to October 15) |
| NJ-1040 extension | April 15, 2026 | File NJ-630 or pay NJ tax due for automatic 6-month extension (to October 15) |
| Federal 1040 extended deadline | October 15, 2026 | Extended federal individual return |
| NJ-1040 extended deadline | October 15, 2026 | Extended NJ individual return |
Key NJ rule: Unlike the federal extension, the NJ extension is not automatic if you owe tax. To obtain a NJ extension, you must pay at least 80% of your NJ tax liability by April 15. If you pay less than 80%, you're subject to NJ late payment penalties even if you filed a federal extension.
What Are the Business Tax Deadlines for 2026?
| Deadline | Date | What's Due | Form |
|---|---|---|---|
| S-Corp / Partnership returns | March 16, 2026 | Federal 1120-S and 1065 due (15th day of 3rd month after year-end) | 1120-S / 1065 |
| NJ S-Corp / Partnership returns | March 16, 2026 | NJ CBT-100S and NJ PART-200-T | CBT-100S / PART-200-T |
| S-Corp / Partnership extension | March 16, 2026 | File Form 7004 (federal) for 6-month extension to September 15 | 7004 |
| C-Corp returns | April 15, 2026 | Federal 1120 due (15th day of 4th month after year-end) | 1120 |
| NJ C-Corp (CBT) returns | April 15, 2026 | NJ CBT-100 | CBT-100 |
| S-Corp / Partnership extended | September 15, 2026 | Extended federal 1120-S and 1065 | |
| C-Corp extended | October 15, 2026 | Extended federal 1120 |
NJ BAIT election deadline: The NJ Business Alternative Income Tax (BAIT) election for tax year 2025 must be made by March 16, 2026 (the S-corp/partnership return due date). The BAIT election is made on the NJ CBT-100S or PART-200-T. If you miss the deadline, you cannot make a retroactive BAIT election for 2025.
Sole proprietors and single-member LLCs: Business income flows to Schedule C of the individual return. The deadline is April 15, 2026, with an extension to October 15.
What Are the Quarterly Estimated Tax Payment Deadlines for 2026?
NJ requires quarterly estimated tax payments (NJ-1040-ES) that mirror the federal estimated tax schedule. Estimated payments are required if you expect to owe more than $400 in NJ income tax after withholding and credits.
| Quarter | Federal 1040-ES | NJ-1040-ES | Covers Income Earned |
|---|---|---|---|
| Q1 2026 | April 15, 2026 | April 15, 2026 | January 1 – March 31 |
| Q2 2026 | June 15, 2026 | June 15, 2026 | April 1 – May 31 |
| Q3 2026 | September 15, 2026 | September 15, 2026 | June 1 – August 31 |
| Q4 2026 | January 15, 2027 | January 15, 2027 | September 1 – December 31 |
Note: June 15, 2026 is a Monday - no weekend adjustment needed for Q2.
NJ underpayment penalty: NJ imposes a penalty if you don't pay at least 80% of your NJ tax liability through withholding and estimated payments throughout the year, or 100% of the prior year's NJ tax liability. The penalty is calculated on the underpaid amount at the Prime Rate plus 3% (currently 10.00% for 2026, per NJ Technical Bulletin TB-21(R)). This is distinct from the flat 5% late-filing penalty under N.J.S.A. 54A:9-6.
What Are the Payroll Tax Deadlines for 2026?
| Deadline | Frequency | What's Due | Form |
|---|---|---|---|
| Federal payroll deposits | Monthly or semi-weekly | Employer federal income tax + FICA withholding | EFTPS |
| Quarterly federal payroll return | April 30, July 31, Oct 31, Jan 31 | Federal 941 (Employer's Quarterly Federal Tax Return) | 941 |
| NJ quarterly payroll returns | April 30, July 30, Oct 30, Jan 30 | NJ-927 (Employer's Quarterly Report) | NJ-927 |
| W-2 and W-3 (to employees/SSA) | January 31, 2026 | W-2 forms to employees and W-3 to SSA | W-2, W-3 |
| 1099-NEC (to recipients/IRS) | January 31, 2026 | 1099-NEC to contractors and to IRS | 1099-NEC |
| 1099-MISC (to recipients) | January 31, 2026 | 1099-MISC (rents, royalties, other income) | 1099-MISC |
| 1099-MISC (to IRS, paper) | February 28, 2026 | Paper filing deadline for 1099-MISC without Box 7 | 1099-MISC |
| 1099-MISC (to IRS, e-file) | March 31, 2026 | Electronic filing deadline for 1099-MISC | 1099-MISC |
NJ new hire reporting: NJ requires employers to report new hires within 20 days through the NJ New Hire Reporting System.
What NJ-Specific Tax Deadlines Do Businesses Most Commonly Miss?
| Deadline | Date | Program |
|---|---|---|
| NJ BAIT election (2025 tax year) | March 16, 2026 | NJ Business Alternative Income Tax, make or confirm election on CBT-100S |
| NJ ANCHOR application | February 28, 2026 | ANCHOR (Affordable NJ Communities for Homeowners and Renters) property tax benefit |
| NJ Senior Freeze application | October 31, 2026 | Property Tax Reimbursement, eligible seniors and disabled individuals |
| NJ CRI-300R (charities registration) | Varies by organization | NJ Charitable Registration and Investigation renewal for nonprofits |
| NJ CBT estimated payments | April 15, June 15, September 15, December 15 | NJ Corporate Business Tax quarterly estimates (C-corps and applicable pass-throughs) |
NJ BAIT: The Business Alternative Income Tax is a workaround for the federal SALT deduction cap ($40,000 since 2025 under OBBBA, increased from $10,000). NJ partnerships and S-corps can elect to pay NJ tax at the entity level, allowing partners/shareholders to deduct BAIT payments on their federal return and then claim a NJ BAIT credit on their NJ-1040. The election must be made annually. It does not carry forward automatically.
What Penalties Apply If You Miss a Federal or NJ Tax Deadline?
| Failure | Federal Penalty | NJ Penalty |
|---|---|---|
| Late filing (no extension) | 5% of unpaid tax per month, up to 25% | 5% per month, up to 25% |
| Late payment | 0.5% per month, up to 25% | 5% of unpaid tax (flat) + interest |
| Failure to pay estimated taxes | Underpayment penalty (rate-based) | 5% annual rate on underpaid amount |
| Late W-2/1099 filing | $60–$630 per form depending on how late | Up to $100 per form |
Important distinction: The federal late filing and late payment penalties are cumulative and can both apply. NJ's late payment penalty is a flat 5% (not per-month). Interest accrues on unpaid tax at the prevailing NJ rate (updated periodically, check nj.gov/treasury/taxation).
Sources and References
- NJ Division of Taxation, nj.gov/treasury/taxation
- IRS Tax Calendar for Businesses and Self-Employed, irs.gov/businesses/small-businesses-self-employed/irs-tax-calendar
- N.J.S.A. 54A:9-8 (NJ estimated tax)
- N.J.S.A. 54:10A-15.11 (NJ BAIT statute)
- NJ Division of Taxation Publication. BAIT FAQ (updated 2025)
For help with NJ tax deadlines, extensions, or estimated tax planning, contact Monaco CPA at [/services/tax-preparation](/services/tax-preparation).
Frequently Asked Questions
Is the NJ extension automatic if I file a federal extension?
No. NJ does not automatically grant an extension just because you filed a federal Form 4868. To get a NJ extension, you must either file NJ-630 or pay at least 80% of your NJ tax liability by April 15. If you underpay, NJ will assess late payment penalties even if you have a valid extension.
When is the NJ BAIT election due for the 2025 tax year?
The NJ BAIT election for tax year 2025 is due March 16, 2026: the S-corp and partnership return due date. The election is made on the CBT-100S (S-corps) or PART-200-T (partnerships). If you miss the March 16 deadline, you cannot make a retroactive election for 2025.
Do NJ estimated taxes follow the same dates as federal?
Yes, with one exception: the NJ estimated tax amounts are calculated based on NJ income (not federal). The quarterly due dates are April 15, June 15, September 15, and January 15. NJ uses Form NJ-1040-ES.
Are there any NJ tax deadlines specific to October/November?
October 31 is the deadline for the NJ Senior Freeze (Property Tax Reimbursement) application. The extended individual return deadline (NJ-1040) is October 15. December 15 is a NJ CBT estimated tax payment date for C-corps. Q4 estimated tax payments for individuals (NJ-1040-ES Q4) are due January 15, 2027.
Related reading: Year-End Tax Moves NJ | Top 5 Overlooked Deductions NJ | NJ Tax Changes 2025 | Tax Services
Ready to File With Confidence?
Tax rules change frequently. If anything in this guide applies to your situation, a quick review with a CPA can prevent costly mistakes. Greg Monaco is a NJ-licensed CPA (License #20CC04711400) who prepares every return personally.
