Why are some deadlines on the 16th or 17th rather than the 15th?

When a due date falls on a Saturday, Sunday or legal holiday it moves to the next business day. That is why the calendar shows 17 June 2024, 16 September 2024, 17 March 2025 and 16 June 2025 — each of those 15ths was a weekend day.

Does an extension give me more time to pay?

No. Form 4868 extends the time to file, generally to 15 October, but the tax owed is still due on the original April deadline. Interest accrues from that date and a late-payment penalty can apply even when the return itself is filed on time under the extension.

Does it include state tax deadlines?

No. Every date in this calendar is a federal deadline. Most states set their own filing and estimated-payment dates, and while many mirror the federal calendar, some do not. Check your state revenue department separately.

Are payroll and information-return deadlines included?

No. Quarterly payroll filings on Form 941, W-2 and 1099 furnishing and filing dates, FBAR reporting and nonprofit Form 990 deadlines are all absent. The list is limited to individual, business income tax, estimated payment and extension dates.

Can I export the dates or get reminders?

No. There is no calendar file export, no email or push notification and no account. The countdowns are live only while the page is open. Print the list and copy the dates you need into whatever calendar you actually check.

Which year does the January estimated payment belong to?

The fourth-quarter estimate for a tax year is paid in the following January — so 15 January 2025 in this calendar is the final payment for the 2024 tax year, not the first for 2025. The equivalent payment for 2025 falls outside the range shown.

Do these dates apply to fiscal-year filers?

No. Every entry assumes a calendar-year taxpayer. Entities with a fiscal year ending on another date have due dates keyed to their own year end, generally a set number of months after it, and this calendar does not model that.

Federal Tax Deadline Calendar — 2024 and 2025 Due Dates

Federal Tax Deadline CalendarThe Tax Deadline Calendar is a free browser-based reference listing major United States federal tax due dates for 2024 and 2025. It covers quarterly estimated tax payments on Form 1040-ES, individual return deadlines on Form 1040, the extended filing date behind Form 4868, and business return dates for S corporations on Form 1120-S, partnerships on Form 1065 and C corporations on Form 1120. Each entry shows the full weekday date, the form number and a countdown of days remaining, colour-coded by urgency, and the list can be filtered by type or printed. It covers federal dates only — no state deadlines, and no reminders.

What people use it for

A freelancer setting up quarterly payment reminders

Someone newly self-employed has to make estimated payments four times a year, with no payroll withholding to fall back on if a date slips. Filtering to Quarterly Estimated Tax isolates the 1040-ES dates so they can be copied into a personal calendar — a necessary step, because the page itself issues no reminders of any kind.

A bookkeeper checking when entity returns are due

Partnerships and S corporations file roughly a month before individuals, because the K-1s they issue feed the partners’ personal returns. Filtering to Business Returns puts the March and April dates side by side with their form numbers, which is the quickest way to confirm the sequence before promising a client a delivery date.

Weighing up whether to file an extension

Seeing the April original date and the October extended date in the same list makes the six-month gap concrete. It also makes the limit of an extension obvious: the filing date moves and the payment date does not, so an extension solves a paperwork problem rather than a cash-flow one, however much it may feel otherwise.

Printing a one-page desk reference in January

A practice or a small business owner can print the unfiltered calendar at the start of the year and pin it above the desk. The printed copy is static, which is exactly what a desk reference should be — though it does mean the day countdowns freeze at the moment of printing and should be ignored thereafter.

How it works

Read the next deadline card At the top of the page, the soonest upcoming date is shown with its title, full weekday date, description, form number and a badge counting the days remaining, or "Today" and "Tomorrow" when very close.
Filter by deadline type The selector narrows the grid to All Deadlines, Quarterly Estimated Tax, Annual Returns, Business Returns, or Extensions, which is the fastest way to see just the dates that apply to you.
Scan the colour coding Cards are outlined by urgency: within a week, within a month, further out, or already passed. Passed entries stay visible and are labelled rather than hidden, so the full year remains readable.
Check the form number Every card names the form involved — 1040-ES for estimates, 1040 for individuals, 1120-S, 1065 and 1120 for entities, 4868 for the individual extension — so the date and the paperwork stay connected.
Print the calendar The print button outputs whatever the current filter shows. There is no calendar export and no notification, so anything you need to be reminded about must be entered elsewhere.

Worked examples

Input: Filter to Quarterly Estimated Tax and look at the 2025 payment dates.

Result: Q1 falls on Tuesday 15 April 2025, Q2 on Monday 16 June 2025, and Q3 on Monday 15 September 2025. The June date is the 16th because 15 June 2025 is a Sunday. The fourth payment for 2025 is due in January 2026, which is beyond the range this calendar covers.

Input: Filter to Business Returns for the 2024 tax year.

Result: S-corporation returns on Form 1120-S and partnership returns on Form 1065 are both dated Monday 17 March 2025 — the 15th was a Saturday — while C-corporation returns on Form 1120 are dated Tuesday 15 April 2025, the same day as individual returns.

Input: Filter to Extensions.

Result: The calendar lists 15 October 2024 and 15 October 2025 as the extended individual filing dates behind Form 4868. Note what the entry does not say: an extension moves only the filing date. Tax owed is still due at the April deadline, and interest runs from then.

Frequently asked questions

Why are some deadlines on the 16th or 17th rather than the 15th?: When a due date falls on a Saturday, Sunday or legal holiday it moves to the next business day. That is why the calendar shows 17 June 2024, 16 September 2024, 17 March 2025 and 16 June 2025 — each of those 15ths was a weekend day.
Does an extension give me more time to pay?: No. Form 4868 extends the time to file, generally to 15 October, but the tax owed is still due on the original April deadline. Interest accrues from that date and a late-payment penalty can apply even when the return itself is filed on time under the extension.
Does it include state tax deadlines?: No. Every date in this calendar is a federal deadline. Most states set their own filing and estimated-payment dates, and while many mirror the federal calendar, some do not. Check your state revenue department separately.
Are payroll and information-return deadlines included?: No. Quarterly payroll filings on Form 941, W-2 and 1099 furnishing and filing dates, FBAR reporting and nonprofit Form 990 deadlines are all absent. The list is limited to individual, business income tax, estimated payment and extension dates.
Can I export the dates or get reminders?: No. There is no calendar file export, no email or push notification and no account. The countdowns are live only while the page is open. Print the list and copy the dates you need into whatever calendar you actually check.
Which year does the January estimated payment belong to?: The fourth-quarter estimate for a tax year is paid in the following January — so 15 January 2025 in this calendar is the final payment for the 2024 tax year, not the first for 2025. The equivalent payment for 2025 falls outside the range shown.
Do these dates apply to fiscal-year filers?: No. Every entry assumes a calendar-year taxpayer. Entities with a fiscal year ending on another date have due dates keyed to their own year end, generally a set number of months after it, and this calendar does not model that.

Tips

Enter the dates that apply to you into your own calendar with a week of warning; this page has no reminder feature at all.
Pay estimated tax on the original date even when the return itself is going on extension — extensions never move a payment.
Partnership and S-corporation returns come a month earlier than individual ones because their K-1s feed the personal return.
If a date you need falls in a year not listed here, expect the same weekend rule: a due date landing on a Saturday or Sunday moves to the following business day.
Verify anything you are about to rely on against IRS.gov, because a static list ages and disaster declarations can postpone dates regionally.

Written by Ahsan Mahmood. Last updated 2026-07-21. This calculator runs entirely in your browser and produces estimates, not tax advice.TaxEase — Federal Tax Deadline Calendar