Q1 2027 Estimated Tax — April 15
Thursday, April 15, 2027
First quarter 2027 estimated tax payment due April 15, 2027.
Who must file or pay
Self-employed individuals, freelancers, S-Corp shareholders, and anyone expecting to owe $1,000+ in federal tax after withholding.
What you need to know
Q1 2027 estimated tax covers income earned January 1 through March 31, 2027. This date again coincides with the annual individual return deadline (or extension deadline) for your 2026 return. Plan for both events simultaneously.
IRS underpayment penalty under IRC §6654 applies. Safe harbor: pay 100% of your 2026 tax liability (110% if prior-year AGI exceeded $150,000), or 90% of 2027 liability.
Required forms
- →Form 1040-ES
- →EFTPS
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Other dates to know
Q1 2026 Estimated Tax — April 15
First quarter 2026 estimated tax payment due April 15 — covering January 1 through March 31 income.
Q2 2026 Estimated Tax — June 16
Second quarter 2026 estimated tax payment due June 16 — covering April 1 through May 31 income.
Q3 2026 Estimated Tax — September 15
Third quarter 2026 estimated tax payment due September 15 — covering June 1 through August 31 income.