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RelyCFO

Expert tax advisory and preparation for individuals, gig workers, small businesses, and S-Corp entities. Houston, TX · Serving clients nationwide.

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shankar@relycfo.com
(346) 265-1444
Houston, Texas
Mon–Fri 8am–5pm CST

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Tax Calendar

2025 Key Tax Deadlines

Missing a deadline can mean penalties and interest. Bookmark this page and never miss a date.

Jan 15
2025
Q4 Estimated Tax PaymentIndividuals

Q4 estimated tax payment for self-employed, gig workers, and investors.

Jan 31
2025
W-2 & 1099 Issued to RecipientsBusiness / S-Corp

Employers furnish W-2s to employees and 1099-NEC to contractors.

Mar 15
2025
S-Corp & Partnership Returns Due (1120-S / 1065)KEY DATEBusiness / S-Corp

Federal returns for S-Corporations and Partnerships. File or extend by this date.

Mar 15
2025
S-Corp / Partnership Extension (Form 7004)KEY DATEExtensions

File Form 7004 for automatic 6-month extension. Extended due date: September 15.

Apr 15
2025
Individual Tax Returns Due (1040)KEY DATEIndividuals

Federal individual income tax return deadline.

Apr 15
2025
IRA & HSA Contribution DeadlineKEY DATEIndividuals

Last day to make a prior-year IRA or HSA contribution — including Roth and backdoor Roth.

Apr 15
2025
Individual Extension (Form 4868)KEY DATEExtensions

Automatic 6-month extension. Extended due date: October 15. Extension to FILE, not to PAY.

Apr 15
2025
Q1 Estimated Tax PaymentQuarterly Estimates

First quarter estimated tax payment for self-employed and investors.

Jun 15
2025
Q2 Estimated Tax PaymentQuarterly Estimates

Second quarter payment. Covers April and May income.

Sep 15
2025
Extended S-Corp & Partnership Returns Final DeadlineBusiness / S-Corp

Final deadline for 1120-S and 1065 returns on extension.

Sep 15
2025
Q3 Estimated Tax PaymentQuarterly Estimates

Third quarter payment covering June, July, and August.

Oct 15
2025
Extended Individual Returns Final DeadlineExtensions

Final deadline for 1040 on extension. No further extensions available.

Dec 31
2025
Year-End Planning DeadlineIndividuals

Last day for charitable contributions, Roth conversions, RMDs, capital loss harvesting, and business expense timing.

⚠️ Dates above are for calendar-year taxpayers. State deadlines often differ. Always confirm with Shankar, CPA for your specific situation.