Washington, D.C. Income Tax Filing Deadlines

Washington, D.C. state income taxes for 2024 tax year can be prepared and e-filed along with an IRS or federal income tax return (or you can learn how to only prepare and file a Washington, D.C. state return). Find IRS or Federal Tax Return deadline details.

Washington D.C. Tax Filing Deadlines

The majority of deadlines listed here are for the 2024 tax year and are due in 2025; some apply to upcoming years and some are IRS or federal deadlines. After Oct. 15 you can no longer e-file tax returns or current year tax amendments. They will have to be filed via paper tax forms.

Deadline

Type

Description

Prepare, eFile, Download
D.C. + IRS Tax Return

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Start Federal and Washington, D.C. Tax Returns

April 15, 2025

Income Tax Return

Prepare and e-file an IRS (Due Date April 15) and Washington, D.C. State Income Tax Return (Due Date April 15) until October 15 - eFileIT.

April 15, 2025

Income Tax Extension

Washington, D.C Income Tax Extension Details.

October 15, 2025

Income Tax Return after the April 15 D.C. Tax Extension

Last day to e-file a 2024 D.C. Income Tax Return for Tax Extension Filers and late eFilers. You can only e-File (to file by paper see below) District of Columbia Income Tax Return together with an IRS Tax Return - eFileIT.

October 15, 2025 via mail-in forms incl. Mailing Address

Income Tax Return after the April 15 D.C. Tax Extension

Deadline for taxpayers who got a D.C. Tax Extension to file their District of Columbia income tax return by mail-in forms is Oct. 15. (Optionally, the eFileIT deadline is Oct. 15. See instructions on how to only - without the IRS return - prepare and file a Washington, D.C. State Income Tax Return on eFile.com.

Complete and Mail In Now.

Tax Amendment for all Tax Years
Three years from the due date of your original return (including any valid extensions).

See detailed instructions on how to prepare and mail in a District of Columbia Income Tax Return Amendment.

IRS Due Dates

IRS Tax Return, Extension, Amendment Deadlines

See detailed current and future Federal or IRS Income Tax Deadlines.

April 15, 2026

2022 Washington, D.C. Income Tax Return Refund

The last day to file and claim your 2022 Washington, D.C. Income Tax Return. This deadline does not apply if you owe Income Taxes. After that date, your 2022 tax refund will expire. See details on unclaimed refunds.

April 15, 2027

2023 Washington, D.C. Income Tax Return Refund

The last day to file and claim your 2023 Washington, D.C. Income Tax Return. This deadline does not apply if you owe Income Taxes. After that date, your 2023 tax refund will expire. See details on unclaimed refunds.

April 15, 2028

2024 Washington, D.C. Income Tax Return Refund

The last day to file and claim your 2024 Washington, D.C. Income Tax Return. This deadline does not apply if you owe Income Taxes. After that date, your 2024 tax refund will expire. See details on unclaimed refunds.

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