The April 15, 2026 federal income tax filing deadline has passed, but taxpayers with estimated quarterly payments face another critical date: June 15, 2026, when the second-quarter estimated tax payment is due.
Estimated tax payments are made by self-employed individuals, business owners, and others who don’t have taxes withheld from regular paychecks. The second quarter covers income earned from April 1 through May 31, according to the IRS. Missing the June 15 deadline can trigger underpayment penalties that compound from the due date until the taxes are paid.
The full 2026 estimated tax payment schedule includes four quarterly deadlines: April 15 for the first quarter, June 15 for the second quarter, September 15 for the third quarter, and January 15, 2027 for the fourth quarter. Taxpayers can pay estimated taxes online through the IRS website, by mail, or through electronic funds withdrawal.
Credit funds face renewed withdrawal pressure in second quarter
Tax filing deadline: April 15, 2026 passed; June 15 estimated payment due
Sources
- Internal Revenue Service — confirmed April 15, 2026 filing deadline and June 15, 2026 estimated tax payment deadline
- Kiplinger — reported June 15, 2026 as the next quarterly estimated tax payment deadline
- Fidelity — listed all four estimated tax payment dates for 2026
