PiggyApril estimated taxes (Q1 payment)
April 15 does double duty: file last year and pay Q1 estimates for this year.
This season’s due date
April 15, 2026 — income period: Q1 2026 (Jan 1 – Mar 31, 2026).
Read the full season notes on the estimated tax seasons hub, then run:
- Quarterly Tax Calculator
- Form 2210 / underpayment helper
- Tax Set-Aside Calculator
- Deadlines + calendar download
Run your own numbers
- Self-Employment Tax Calculator — the 15.3%, exactly.
- Quarterly Tax Calculator — what to send the IRS each quarter.
- Tax Set-Aside Calculator — what percent of profit to park.
- Quarterly Tax Deadlines — every due date + calendar file.
Frequently asked questions
When is the April payment due?
April 15, 2026, covering Q1 2026 (Jan 1 – Mar 31, 2026).
Where are all deadlines?
See the quarterly tax deadlines page for 2026 and 2027 dates plus a downloadable calendar file.
Later in 2026: June 15 (Q2) · September 15 (Q3) · All seasons