Washington, D.C. Income Tax Filing Deadlines

Washington, D.C. state income taxes for current 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.

The majority of deadlines listed here are for current tax year. Some apply to upcoming Tax Years and some are IRS or Federal deadlines.

Deadline

Type

Description

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

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April 15, 2024

Tax Year 2023
Income Tax Return

Prepare and e-file an IRS (Due Date April 15, 2024) and Washington, D.C. State Income Tax Return (Due Date April 15, 2024) until October 15, 2024 - eFileIT.

April 15, 2024

2023 Income Tax Extension

Washington, D.C Income Tax Extension Details.

October 15, 2024

Tax Year 2023
Income Tax Return after the April 15, 2024 D.C. Tax Extension

Last day to e-file a 2023 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, 2024 via mail-in forms (listed below with mailing addresses)

Tax Year 2023
Income Tax Return after the April 15, 2024 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, 2024. (Optionally, the eFileIT deadline is Oct. 15, 2024). 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

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.

2024, 2025, etc.

Other State Tax Return, Extension, Amendment Deadlines

Select respective State Tax Return Deadlines.

2024, 2025, etc.

IRS Federal Income Tax Return, Amendment, Extension Deadlines

2023, 2024 Tax Year Income Tax Return Deadlines

April 15, 2025

2021 Washington, D.C. Income Tax Return Refund

The last day to file and claim your 2021 Washington, D.C. Income Tax Return. This deadline does not apply if you owe Income Taxes. After that date, your 2021 tax refund will expire.

April 15, 2026

2023 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.

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.

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