Federal Tax Compliance Calendar
This calendar lists recurring federal tax due dates. Dates follow standard federal schedules and move to the next business day when they fall on a weekend or holiday. Confirm each date against irs.gov before relying on it.
| Due date | What is due | Who it usually applies to |
|---|---|---|
| Sep 15, 2026 (passed) | Q3 2026 estimated tax payment; extended partnership and S corporation returns for 2025 | Individuals with estimated tax; entities on extension |
| Oct 15, 2026 | Extended individual return (Form 1040) for 2025; extended C corporation return | Taxpayers who requested an extension by the April deadline |
| Jan 15, 2027 | Q4 2026 estimated tax payment | Individuals with estimated tax |
| Jan 31, 2027 | Forms W-2 and W-3; Forms 1099-NEC and 1099-MISC for 2026 | Employers and businesses paying workers or contractors |
| Mar 15, 2027 | Partnership return (Form 1065) and S corporation return (Form 1120-S) for 2026 | Partnerships and S corporations |
| Apr 15, 2027 | Individual return (Form 1040) and C corporation return (Form 1120) for 2026; Q1 2027 estimated tax payment | Individuals and C corporations |
| Jun 15, 2027 | Q2 2027 estimated tax payment | Individuals with estimated tax |
| Sep 15, 2027 | Q3 2027 estimated tax payment; extended partnership and S corporation returns for 2026 | Individuals; entities on extension |
Form 4547 and Trump Account items
The Form 4547 instructions say the form may be filed at any time, so there is no fixed filing deadline for the election itself. Check trumpaccounts.gov and the IRS for any dated milestones, such as account setup or deposit timing, and add them here once verified. See our Form 4547 notes.
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This calendar is a general guide and does not replace official IRS guidance or advice from a qualified tax professional. IRS4547CPA is not affiliated with the IRS or the Treasury.