D.C. Taxes Pages

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
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
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 ReturneFileIT.
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.
Tax Amendment for all Tax Years
IRS Due Dates
IRS Tax Return, Extension, Amendment 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
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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