DC Tax Timeline

District of Columbia Real Property Tax Timeline for Calendar Year 2021

January 1, 2021
Date of value for annual assessments.

March 1, 2021
Notices of proposed assessment are mailed.

March 31, 2021
First-half real estate taxes and BID taxes due.

April 15, 2021
Deadline for Tax Year 2022 First Level Appeals.

May 17, 2021
Deadline for filing Tax Year 2022 (CY20) Income & Expense Reports, Rent Rolls, and New Lease abstracts. DC is requiring electronic submission through its online portal.

September 1, 2021
Deadline for filing Tax Year 2022 Mixed-Use Declarations.*

September 15, 2021
Second-half real estate taxes, BID taxes and vault rent due.

September 30, 2021
Deadline for filing TY21 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.