Freelancer Tax Deadlines for Late 2026 and 2027

By Reese Calloway · Updated 2026-09-28

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The next federal deadline for most freelancers is Thursday, October 15, 2026, the last day to file a 2025 Form 1040 that is on extension. The fourth 2026 estimated tax payment is due Friday, January 15, 2027, and Thursday, April 15, 2027 brings the 2026 return, the extension request and the first 2027 estimated payment. Dates after January 15, 2027 are computed from the IRS weekend and legal-holiday rule, so confirm them against the 2027 edition of IRS Publication 509 once it is final.

Due date	What is due	Basis
Thu, Oct 15, 2026	2025 Form 1040, if you got the automatic extension	IRS 2026 tax calendar
Fri, Jan 15, 2027	4th 2026 estimated tax payment (income earned Sep 1 to Dec 31, 2026)	IRS estimated tax FAQ
Mon, Feb 1, 2027	Form 1099-NEC for 2026 payments: copies to recipients and filing with the IRS (Jan 31 is a Sunday)	Computed
Mon, Feb 1, 2027	Optional: file the 2026 Form 1040 and pay the full balance instead of making the January 15 payment	Computed
Mon, Mar 15, 2027	2026 Form 1065 (partnerships) and Form 1120-S (S corporations), with Schedules K-1; Form 7004 to extend	Computed
Thu, Apr 15, 2027	2026 Form 1040 and any balance due; Form 4868 extension; 1st 2027 estimated payment	Computed
Tue, Jun 15, 2027	2nd 2027 estimated payment	Computed
Wed, Sep 15, 2027	3rd 2027 estimated payment; extended 2026 Forms 1065 and 1120-S	Computed
Fri, Oct 15, 2027	Extended 2026 Form 1040	Computed
Tue, Jan 18, 2028	4th 2027 estimated payment (Jan 15 is a Saturday and Mon, Jan 17 is Martin Luther King Jr. Day)	Computed

“Computed” means the date is the Publication 509 base date, moved forward by the weekend and legal-holiday rule explained below. It is not taken from a published 2027 IRS calendar.

2026 deadlines that have already passed

Due date (2026)	What was due
Thu, Jan 15	4th 2025 estimated tax payment
Mon, Feb 2	Form 1099-NEC for 2025 payments, to recipients and the IRS; last day to file and pay in full instead of making the January payment (Jan 31 was a Saturday)
Mon, Mar 16	2025 Forms 1065 and 1120-S (Mar 15 was a Sunday)
Wed, Apr 15	2025 Form 1040, Form 4868 extension, 1st 2026 estimated payment
Mon, Jun 15	2nd 2026 estimated payment
Tue, Sep 15	3rd 2026 estimated payment; extended 2025 Forms 1065 and 1120-S

Each date matches the IRS online tax calendar for 2026. If a June or September payment came up short, paying now limits the cost: the penalty is figured by the day, and the IRS applies a payment to the earliest underpaid installment first, even if you label it for a later one.

How the IRS sets each date

Item	Base rule for a calendar-year filer
Form 1040	15th day of the 4th month after the year ends: April 15
Form 4868	Automatic 6 more months to file: October 15
Estimated tax (Form 1040-ES)	15th day of the 4th, 6th and 9th months, and of the 1st month after the year ends: April 15, June 15, September 15, January 15
Forms 1065 and 1120-S	15th day of the 3rd month: March 15; Form 7004 adds 6 months, to September 15
Form 1099-NEC	January 31, to the IRS and to the recipient; no automatic extension

When a base date falls on a Saturday, Sunday or legal holiday, the deadline becomes the next day that is none of those. Legal holidays for this rule include any legal holiday in the District of Columbia, so DC Emancipation Day on April 16 counts. January 2028 shows the rule applied twice: January 15, 2028 is a Saturday and Monday, January 17 is Martin Luther King Jr. Day, so the fourth 2027 payment is on time through Tuesday, January 18.

Three other timing details:

An extension gives you more time to file, not to pay. Tax owed for 2026 is still due April 15, 2027.
A mailed payment counts as paid on the U.S. postmark date. EFTPS payments must be scheduled by 8 p.m. ET at least one calendar day before the due date.
If the IRS determines you are affected by a presidentially declared disaster, it can give you up to a year of extra time to file and pay; the relief announcement sets the new date.

Why the estimated tax periods are uneven

Payment period	Months of income	Due date
January 1 to March 31	3	April 15
April 1 to May 31	2	June 15
June 1 to August 31	3	September 15
September 1 to December 31	4	January 15 of the next year

The four periods are not calendar quarters. The June payment comes two months after the April one, and the January payment covers four months of income. If you pay one-fourth of your required annual payment on each date, the uneven spacing does not change the amounts; it only shortens the gap between the first two payments.

The spacing matters more when income is lumpy. Under the annualized income installment method, figured on Form 2210 Schedule AI, your required payments can follow when the income actually arrived, so money that lands in the fall is covered by the later payments instead of being spread back to April. The IRS also accepts more frequent payments, such as monthly, as long as enough has been paid by each due date. Managing irregular freelance income covers the cash-flow side of uneven months.

Filing by February 1, 2027 instead of making the January payment

If you file your 2026 Form 1040 and pay the entire balance by Monday, February 1, 2027, you owe no penalty for the January 15, 2027 installment. The Form 2210 instructions state this deadline as January 31; in 2027 that is a Sunday, so it moves to Monday.

Two limits apply. The rule covers only the fourth installment, so shortfalls on the April, June or September payments are still measured. It also requires complete 2026 records by the end of January, while any Forms 1099-NEC your clients owe you are due the same day.

Underpayment penalty and the safe harbors

The penalty is figured separately for each installment, so you can owe it for an early date even if you catch up later or end up with a refund. It is based on the amount you were short, how long it stayed unpaid, and the IRS underpayment interest rate, which is 7% a year, compounded daily, for the quarter that began October 1, 2026.

You generally avoid it for 2026 if one of these applies:

The total tax on your 2026 return, minus withholding, is less than $1,000.
Your withholding and on-time estimated payments equal at least the smaller of 90% of your 2026 tax or 100% of your 2025 tax. Use 110% of 2025 tax if your 2025 AGI was over $150,000 ($75,000 if married filing separately). The 2025 return must cover 12 months.
You had no tax liability for 2025, were a U.S. citizen or resident alien for all of 2025, and 2025 was a full 12-month tax year.

The IRS usually figures the penalty and mails a bill, so most people do not attach Form 2210. You file it yourself mainly to use the annualized method or to request a waiver, which is available for a casualty, disaster or other unusual circumstance, or if you retired after reaching age 62 or became disabled and the underpayment had reasonable cause.

Example. Sample inputs: 2025 total tax of $8,000, 2025 AGI under $150,000, expected 2026 tax of $12,000, no withholding.

90% of 2026 tax: 0.90 × $12,000 = $10,800
100% of 2025 tax: $8,000
Required annual payment, the smaller amount: $8,000
Per installment: $8,000 ÷ 4 = $2,000 on April 15, June 15 and September 15, 2026, and January 15, 2027

Four on-time $2,000 payments avoid the penalty even though $4,000 ($12,000 − $8,000) is still owed with the return by April 15, 2027.

State deadlines are set separately

States with an income tax set their own return dates, estimated tax thresholds and installment rules. California shows how far they can drift from the federal pattern: its 2026 installments are 30% of the year’s estimated tax by April 15, 2026, 40% by June 15, 2026, nothing on September 15, 2026 and 30% by January 15, 2027. It generally requires estimated payments once you expect to owe at least $500 ($250 if married/RDP filing separately). Check your state revenue department’s calendar alongside the federal one.

Working out the amount for each date

The dates tell you when to pay; the Form 1040-ES worksheet tells you how much. Quarterly estimated taxes for freelancers walks through the safe-harbor math, and your first year freelancing covers the prior-year exceptions when you are new. The self-employment tax calculator estimates the self-employment tax share of each payment, and how much to set aside for tax covers holding cash between due dates.

This page is general information about federal and state deadlines, not tax advice.

Sources

Figures on this page are general-information estimates, not professional advice. Check the stated assumptions and any linked sources, and use a qualified professional where the decision requires one.