Quarterly Estimated Tax Due Dates for 2026

2026 estimated tax deadlines

The 2026 IRS Publication 505 lists four payment periods for calendar-year individuals. The schedule below is for federal estimated income tax; state deadlines can differ.

The periods are uneven. The second covers only April and May, while the fourth covers September through December. Use the IRS periods instead of dividing the calendar into four equal three-month blocks.

Who may need estimated payments

Estimated tax is used for income that is not subject to enough withholding. The IRS Form 1040-ES page gives self-employment earnings, interest, dividends and rents as examples.

Whether you must pay and how much you should pay depend on your full tax situation. Use the current 2026 Form 1040-ES worksheet or ask a qualified tax professional. A list of due dates cannot determine your required payment.

If your income starts later

You may not need to make the first payment in April if the income requiring estimated tax begins later. Publication 505 says the first payment is generally due for the period in which that income begins, followed by the remaining deadlines.

For example, income first received during June through August generally points to September 15 as the first standard payment date. This rule does not calculate the amount, and uneven income may require the annualized income installment method.

A reminder routine that leaves proof

Put each deadline on your calendar twice: one preparation reminder and the actual due date. The preparation reminder gives you time to update income, expenses and withholding before making the payment.

After paying, save the confirmation number, date, amount and tax year with your records. Keep the payment proof separate from expense receipts so it is easy to reconcile against your IRS account and tax return.

1. Set preparation reminders for April 1, June 1, September 1 and January 2.
2. Update year-to-date income, expenses and withholding at each reminder.
3. Recalculate with the current IRS worksheet instead of copying the last payment blindly.
4. Pay through an official IRS payment option and choose the correct tax year.
5. Save the confirmation and note the next deadline before closing the task.

Example planning timeline

This fictional example shows the recordkeeping rhythm for a freelancer with income throughout 2026. It does not calculate tax or recommend a payment amount.

Jordan reviews business records before each deadline, then uses Form 1040-ES with current income and withholding. If the calculation changes, Jordan records the reason instead of forcing four identical payments.

Exceptions to check before paying

The standard calendar does not cover every case. Publication 505 has separate timing rules for fiscal-year taxpayers and qualifying farmers and fishers. It also explains a January-payment exception when a qualifying return is filed and the remaining tax is paid early.

A federally declared disaster can postpone deadlines for eligible taxpayers. Check the IRS disaster relief page for your location before assuming that a general announcement applies to you.