--- title: "Small Business Tax Deadlines 2027: Every IRS Date in Order" description: "Every federal date small businesses miss most in 2027, in order: estimated tax, 1099-NEC and W-2 on February 1, partnership and S-corp returns, and more." url: "https://mcc-solutionsnj.com/bookkeeping/deadlines" --- Tax deadlines 2027 # Small business tax deadlines for 2027 One list of the federal dates owners miss most, in the order they arrive, with a page for each that says what to have ready. For a calendar tailored to your business type, use the free [tax deadline calendar](/bookkeeping/tax-deadlines). [![Intuit ProAdvisor Gold tier badge](/img/credentials/intuit-proadvisor-gold.png)](https://proadvisor.intuit.com/app/accountant/search?searchId=matthew-coleman77)Gold tier in Intuit's ProAdvisor program. [See my Intuit listing](https://proadvisor.intuit.com/app/accountant/search?searchId=matthew-coleman77) ## Federal dates in order These are for businesses and people on a calendar tax year, filing for 2026. If your tax year is different, your dates are different. | Date | What is due | Who | | --- | --- | --- | | **Friday, January 15, 2027** | [Estimated tax, 4th payment for 2026](/bookkeeping/deadlines/estimated-tax-due-dates) | Owners who pay estimated tax | | **Monday, February 1, 2027** | [Form 1099-NEC for 2026 payments, and Form W-2 for employees](/bookkeeping/deadlines/1099-nec-and-w-2-due-date) | Anyone who paid contractors or staff | | **Monday, February 1, 2027** | [Form 940 for 2026 and Form 941 for the 4th quarter of 2026](/bookkeeping/deadlines/payroll-tax-filing-dates) | Employers | | **Monday, March 15, 2027** | [Form 1065 (partnerships) and Form 1120-S (S corporations) for 2026, with Schedule K-1](/bookkeeping/deadlines/partnership-and-s-corp-return-due-date) | Partnerships and S corporations | | **Thursday, April 15, 2027** | [Form 1040 for 2026, and the 1st estimated payment for 2027](/bookkeeping/deadlines/individual-tax-return-due-date) | Individuals, sole proprietors and single-member LLCs | | **Friday, April 30, 2027** | [Form 941 for the 1st quarter of 2027](/bookkeeping/deadlines/payroll-tax-filing-dates) | Employers | | **Tuesday, June 15, 2027** | [Estimated tax, 2nd payment for 2027](/bookkeeping/deadlines/estimated-tax-due-dates) | Owners who pay estimated tax | | **Monday, August 2, 2027** | [Form 941 for the 2nd quarter of 2027](/bookkeeping/deadlines/payroll-tax-filing-dates) | Employers | | **Wednesday, September 15, 2027** | [Estimated tax, 3rd payment for 2027. Also the extended date for Forms 1065 and 1120-S](/bookkeeping/deadlines/estimated-tax-due-dates) | Owners, partnerships and S corporations | | **Monday, November 1, 2027** | [Form 941 for the 3rd quarter of 2027](/bookkeeping/deadlines/payroll-tax-filing-dates) | Employers | Dates checked October 26, 2026 against [IRS Publication 509 (2027), early release draft](https://www.irs.gov/pub/irs-dft/p509--dft.pdf). IRS early release draft of Publication 509 (2027). The final version can change a date. Confirm every date with the IRS and, for New Jersey, the NJ Division of Taxation before you rely on it. ## What a missed date costs The IRS adds penalties automatically, and they grow every month a return or payment is late: - **Filing late:** usually 5% of the unpaid tax for each month or part of a month the return is late, up to 25%. - **Paying late:** 0.5% of the unpaid tax each month, up to 25%, plus interest. - **Partnership and S corporation returns:** a set penalty for every partner or shareholder, for each month the return is late, even when no tax is owed. - **1099 and W-2 forms:** a penalty for each form, which goes up the later the forms are filed. - **Estimated tax:** paying too little each quarter costs an underpayment penalty, figured like interest on the shortfall. Source: [IRS Topic 653, penalties and interest](https://www.irs.gov/taxtopics/tc653). Books that are current make every one of these dates a routine job. [Behind on your books? See catch-up bookkeeping](/bookkeeping/catch-up) or [take the free books check](/bookkeeping/health-check). ## Why these pages exist Most missed deadlines are not a surprise. They are a pile of small jobs that were not started: a W-9 never collected, a bank account not reconciled, a payroll report that does not match the books. Each page below says which of those jobs sits behind a date, so the work can start months before the day. - [1099-NEC and W-2 due date](/bookkeeping/deadlines/1099-nec-and-w-2-due-date): contractor and employee forms, February 1, 2027. - [Partnership and S corporation return due date](/bookkeeping/deadlines/partnership-and-s-corp-return-due-date): March 15, 2027, and the extension. - [Estimated tax due dates](/bookkeeping/deadlines/estimated-tax-due-dates): all four payments. - [Tax Day 2027](/bookkeeping/deadlines/individual-tax-return-due-date): individual returns, Schedule C and the October extension, April 15, 2027. - [Payroll tax filing dates](/bookkeeping/deadlines/payroll-tax-filing-dates): Forms 940 and 941. ## New Jersey This page lists federal dates only. New Jersey has its own due dates for income tax, estimated payments, business returns and sales tax, set by the NJ Division of Taxation. New Jersey also applies its own test for who counts as an independent contractor: see our guide to the [ABC test](/bookkeeping/guides/nj-independent-contractor-rule-abc-test-2026). ## Questions **Do these dates apply to every business?** They apply to calendar-year filers and to the federal forms named. A business with a fiscal year, a different entity type or an approved extension has different dates. When in doubt, ask your CPA. **What happens when a due date falls on a weekend?** A due date that falls on a Saturday, Sunday or legal holiday moves to the next business day, which is why several 2027 dates are February 1 instead of January 31. **Why does the page say draft?** The IRS publishes next year's calendar in draft before the final version. IRS early release draft of Publication 509 (2027). The final version can change a date. We update this page when the final version is out. **Can you file my taxes?** MCC Solutions is not a CPA firm. Tax returns, elections and legal questions stay with your CPA, enrolled agent or attorney. Our part is getting the books accurate and organized so they can do that work faster. MCC Solutions is not a CPA firm. Tax returns, elections and legal questions stay with your CPA, enrolled agent or attorney. Our part is getting the books accurate and organized so they can do that work faster. [See the year-end cleanup checklist](/bookkeeping/year-end-cleanup)[Books behind? See catch-up](/bookkeeping/catch-up) Do it yourself ### New Jersey Business Compliance Calendar 2027 One page that tells you what's due each month in 2027, with weekend dates already worked out. [See what's inside ($19)](/toolkits/nj-business-compliance-calendar) [Free sample](/toolkits/nj-business-compliance-calendar#free-starter)14-day full refund ## Related - [Free reminders for estimated tax dates](/bookkeeping/estimated-tax-date-reminders) - [Gig driver money and mileage: a free 5-part email course](/bookkeeping/gig-driver-money-email-course) - [Small business bookkeeping basics for owners](/courses/small-business-bookkeeping-basics) - [Online courses from MCC Solutions](/courses) ## Start with a free look at your books [Free books check](/bookkeeping/health-check)[Call (908) 444-6373](tel:+19084446373)