DC Tax Timeline

District of Columbia Real Property Tax Timeline for Calendar Year 2023

January 1, 2023
Date of value for Tax Year 2024 annual assessments.

March 1, 2023
Notices of proposed Tax Year 2024 assessment are mailed.

March 31, 2023
First-half Tax Year 2023 real estate taxes and BID taxes due.

March 31, 2023 (April 1, 2023 falls on a Saturday)
Deadline for Tax Year 2024 First Level Appeals.

April 18, 2023
Deadline for filing Tax Year 2024 (CY22) Income & Expense Reports, Rent Rolls, and New Lease abstracts for properties on the mandatory filing list. DC requires electronic submission through its online portal.

September 1, 2023
Deadline for filing Tax Year 2023 Mixed-Use Declarations. DC requires electronic submission through its online portal.*

September 15, 2023
Second-half Tax Year 2022 real estate taxes, BID taxes and vault rent due.

September 30, 2023 (September 30, 2023 falls on a Saturday)
Deadline for filing TY23 petitions in D.C Superior Court.


*How to submit a Mixed-Use Declaration:

  • From the MyTaxDC homepage (mytax.dc.gov), go to the “Real Property” section (first row, third column), click on “Search Real Property by Address or SSL”, enter the property information, and click search.
  • Then click on the property SSL link (in blue, lower left), and go to the “Applications and Actions” tab.
  • From there, go to “Property Maintenance” (top left) and click “Submit the Mixed Use Declaration.”


The information contained herein is for general informational purposes only. The information, while believed to be accurate at the time it was placed on the website, may have been changed, especially in regard to court, administrative agency or assessor appeal and assessment deadline and issuance dates. Accordingly, it is advised that you do not rely solely upon the information contained on this website but that you contact one of our attorneys for additional or confirmatory information. The information contained herein should not in any way be construed as legal advice and should not be relied upon without further inquiry. Any reliance on the information does not establish an attorney client relationship.