December 2026 Federal Tax Deadlines

IRS calendar guide

The IRS fourth-quarter tax calendar lists the main December 2026 federal tax checkpoints summarized below.

Last verified June 16, 2026

December 2026 combines December 15 business estimated-tax and UBIT items, year-end Form 2290/Form 730 items on December 31, and the Christmas federal holiday on December 25.

Grouped December 2026 IRS items

Group	Dates	Official-source meaning
Semiweekly payroll and tip reporting	December 2, 4, 9, 10, 11, 16, 18, 23, 28, and 30	The IRS calendar lists several semiweekly payroll items and November tip reporting. These depend on payment windows, employee facts, and deposit schedule.
December 15 business and tax-exempt cluster	December 15	IRS lists corporate fourth estimated tax installments, partnership Form 8813, monthly payroll deposit timing for November, nonresident alien no-wage Form 1040-NR extension timing, and tax-exempt organization UBIT estimated tax.
Year-end activity-month items	December 31	IRS lists Form 2290 for vehicles first used in November and Form 730 for wagers accepted in November.

Why grouping matters

The IRS public calendar mixes different kinds of items: payroll deposits, employee tip reporting, form filings, estimated-tax installments, excise-tax lines, extension return dates, and specialized entity items. A short date-only page would flatten those differences and could make a narrow rule look like a general household deadline.

This guide keeps the groups separate. Payroll deposit dates depend on the employer’s deposit schedule and payment windows. Extension dates depend on whether a valid extension was filed. Estimated-tax dates depend on taxpayer type, tax year, prior payments, and current instructions. Excise-tax items depend on the activity month and the form’s applicability. The page is useful only when the reader verifies the official condition behind the date.

Verification checklist for December tax dates

Start with the IRS fourth-quarter tax calendar for tax items and confirm the current form instructions before using a date.
Separate form filing dates from deposit dates, payment dates, employee reporting dates, federal holidays, and local service schedules.
For payroll items, confirm the employer’s monthly or semiweekly deposit rule and the exact payment window.
For extension items, confirm that a valid extension was filed and remember that a filing extension does not automatically extend payment time.
For holiday closure items, verify OPM, Federal Reserve, USPS, local office, bank, employer, school, and service-provider details when timing matters.
Check disaster relief, agency notices, account notices, and same-day service cutoffs before treating a public calendar date as the final action date.

Recommended record path

Keep the official calendar link, the relevant form instruction, filing acknowledgements, EFTPS or payment confirmations, payroll provider records, extension confirmations, and agency notices with the account records. If a business uses an outside payroll provider, return preparer, payment processor, bond counsel, fleet administrator, or compliance vendor, the public date should be reconciled with that workflow before anyone treats the date as final.

Related December 2026 pages

What this page does not decide

This page does not decide whether a taxpayer, employer, partnership, corporation, tax-exempt organization, vehicle owner, bond issuer, wagering business, withholding agent, employee, bank, Post Office, school, or private employer is covered by a specific rule. It also does not decide penalties, payment amounts, extension validity, account status, branch hours, mailing guarantees, local closures, or professional filing strategy. It only organizes official-source dates for December 2026 so readers can verify the relevant source before acting.

The safest use of this page is as a source-reviewed checklist. If a date matters financially, operationally, or legally, readers should confirm the current official page, the form instructions, the account record, and any notice or professional guidance that applies to their situation.

Planning boundary

This is a forward-looking September-December 2026 expansion

As of the June 2026 planning window, this cluster starts with September 2026 and continues through December 2026. It is intentionally built around dates readers can still plan for, instead of creating new standalone pages that begin with deadlines already in the past.

Pages in this expansion summarize official-source dates and keep applicability decisions outside the site scope. They are designed for calendar planning, source verification, and internal navigation, not for deciding whether a reader must file, pay, close, open, mail, bank, or report.

Additional December 2026 IRS event pages

Focused IRS event pages for December 2026, built from the same official calendar source and separated from personalized applicability decisions.

December 10, 2026 Employee Tip Reporting Deadline

The IRS fourth-quarter calendar lists December 10, 2026 for employees to report November tips of $20 or more to employers.

Sources and verification

Official sources

Last verified: June 16, 2026. Jurisdiction: United States federal. Cycle: September-December 2026 forward deadline expansion.

This page is informational and is not tax, payroll, bond, legal, financial, banking, postal, employment, trucking, wagering, immigration, student-aid, or professional advice. It does not decide whether a filing, deposit, return, holiday closure, banking service, USPS service, employer schedule, state or local schedule, form requirement, penalty, or extension applies. Verify details with the official source, agency account, current form instructions, employer, financial institution, local office, service provider, or qualified professional when needed. Corrections Policy