Quarterly Estimated Tax Calculator
Because no employer withholds tax from your pay, the IRS expects self-employed workers to send in estimated tax payments four times a year. Missing a payment can trigger an underpayment penalty. Enter your expected 2026 net profit to see your quarterly amounts and due dates.
Estimated quarterly payments
Based on the IRS safe-harbor rule of paying 90% of this year's estimated tax in four equal installments.
| Period | Due date | Amount |
|---|---|---|
| Q1 (Jan 1 – Mar 31) | April 15 | $3,486 |
| Q2 (Apr 1 – May 31) | June 15 | $3,486 |
| Q3 (Jun 1 – Aug 31) | September 15 | $3,486 |
| Q4 (Sep 1 – Dec 31) | January 15 (next year) | $3,486 |
Total estimated payments $13,945
Full estimated annual tax (SE tax + federal + state income tax): $15,495
Quarterly estimated tax by state
Due dates are federal and the same nationwide, but the amount you owe depends on your state's income tax rate. Jump to your state:
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