Freelancer Tax Deadline Calendar 2025-2026
Every self-employment tax deadline from Jan 2025 through Dec 2026. Filter by entity type, add any deadline to Google Calendar, and see your next deadline with a countdown.
Filter by Entity Type
Showing 26 deadlines. All deadlines shown across all entity types.
January 2025
2 deadlinesQ4 2024 Estimated Tax Due
Form 1040-ES
Fourth quarter 2024 estimated tax payment due. Covers Sep 1 through Dec 31, 2024 income. Paying by Jan 15 avoids the need to include Q4 income on your April return.
1099-NEC Deadline (send + file)
Form 1099-NEC
Send 1099-NEC forms to contractors paid $600 or more in 2024 AND file copies with the IRS by Jan 31. Same deadline for both recipient and IRS copies.
February 2025
No deadlines
March 2025
1 deadlineS-Corp & Partnership Return Due
Form 1120-S / 1065
Form 1120-S (S-Corp) and Form 1065 (Partnership) tax returns for 2024 are due. File Form 7004 for an automatic 6-month extension to Sep 15.
April 2025
3 deadlinesQ1 2025 Estimated Tax Due
Form 1040-ES
First quarter 2025 estimated tax payment. Covers Jan 1 through Mar 31, 2025 income.
Individual Tax Return Due (or Extension)
Form 1040 / 4868
Form 1040 due for tax year 2024. File Form 4868 for an automatic 6-month extension to Oct 15. Note: extension extends the filing deadline only, not the payment deadline.
SEP-IRA Contribution Deadline (filing on time)
IRS Pub 560
If filing your 2024 return by Apr 15 with no extension, SEP-IRA contributions for 2024 must be deposited by Apr 15. Max: 25% of net self-employment income, up to $69,000.
May 2025
No deadlines
June 2025
1 deadlineQ2 2025 Estimated Tax Due
Form 1040-ES
Second quarter 2025 estimated tax payment. Covers Apr 1 through May 31, 2025 income. Note: Q2 covers only 2 months, not 3.
July 2025
No deadlines
August 2025
No deadlines
September 2025
2 deadlinesQ3 2025 Estimated Tax Due
Form 1040-ES
Third quarter 2025 estimated tax payment. Covers Jun 1 through Aug 31, 2025 income.
S-Corp Extended Return Due
Form 1120-S extended
Extended deadline for S-Corp (Form 1120-S) and Partnership (Form 1065) returns for tax year 2024. No further extensions are available after this date.
October 2025
2 deadlinesExtended Individual Return Due
Form 1040 extended
Final deadline for Form 1040 (tax year 2024) if you filed a Form 4868 extension in April. No further extensions available.
SEP-IRA Deadline (if on extension)
IRS Pub 560
If you filed a tax extension for 2024, SEP-IRA contributions for 2024 can be made until Oct 15, 2025. Solo 401k employee deferrals must still be elected by Dec 31 of the tax year.
November 2025
No deadlines
December 2025
2 deadlinesSolo 401k Establishment Deadline
IRS Pub 560
A Solo 401k plan must be established by Dec 31, 2025 to make contributions for the 2025 tax year. Employee salary deferrals must also be elected in writing by Dec 31.
Year-End Deduction Purchases
IRC §179
Last day to make deductible 2025 business purchases. Equipment, software, and subscriptions placed in service by Dec 31 qualify for Section 179 expensing and bonus depreciation.
January 2026
1 deadlineQ4 2025 Estimated Tax Due
Form 1040-ES
Fourth quarter 2025 estimated tax payment due. Covers Sep 1 through Dec 31, 2025 income.
February 2026
1 deadline1099-NEC Deadline (send + file)
Form 1099-NEC
Send 1099-NEC forms to contractors paid $600 or more in 2025 and file with the IRS. Jan 31 falls on a Saturday in 2026, so the deadline shifts to Mon Feb 2.
March 2026
1 deadlineS-Corp & Partnership Return Due
Form 1120-S / 1065
Form 1120-S (S-Corp) and Form 1065 (Partnership) returns for tax year 2025 due. Mar 15 falls on a Sunday so deadline is Mar 16.
April 2026
3 deadlinesQ1 2026 Estimated Tax Due
Form 1040-ES
First quarter 2026 estimated tax payment. Covers Jan 1 through Mar 31, 2026 income.
Individual Tax Return Due (or Extension)
Form 1040 / 4868
Form 1040 due for tax year 2025. File Form 4868 for an automatic 6-month extension to Oct 15, 2026.
SEP-IRA Contribution Deadline (filing on time)
IRS Pub 560
SEP-IRA contributions for 2025 must be deposited by Apr 15, 2026 if filing without extension.
May 2026
No deadlines
June 2026
1 deadlineQ2 2026 Estimated Tax Due
Form 1040-ES
Second quarter 2026 estimated tax payment. Covers Apr 1 through May 31, 2026 income.
July 2026
No deadlines
August 2026
No deadlines
September 2026
2 deadlinesOctober 2026
2 deadlinesExtended Individual Return Due
Form 1040 extended
Final deadline for Form 1040 (tax year 2025) if you filed a Form 4868 extension in April.
SEP-IRA Deadline (if on extension)
IRS Pub 560
SEP-IRA contributions for 2025 can be made until Oct 15, 2026 if you filed a tax extension.
November 2026
No deadlines
December 2026
2 deadlinesSolo 401k Establishment Deadline
IRS Pub 560
Solo 401k plan must be established and employee salary deferrals elected in writing by Dec 31, 2026 to make 2026 contributions.
Year-End Deduction Purchases
IRC §179
Last day to make deductible 2026 business purchases. Section 179 and bonus depreciation apply to assets placed in service by Dec 31.
Disclaimer: Tax deadlines may shift when they fall on weekends or federal holidays. The 2026 dates shown are current best estimates — confirm with IRS.gov or your CPA before filing. State income tax deadlines often match federal deadlines but vary by state. This tool is for planning purposes only and does not constitute tax advice.
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