March
1
- County of
Arlington business license renewal application and payment due
- County of
Fairfax BPOL renewal applications and payment due
- County of
Loudoun business license renewal application and payment due
- City of Alexandria
business license renewal application and payment due
- City of Fairfax
business license renewal application and payment due
- City of Falls
Church business license renewal application and payment due
- Town of Purcellville
business license renewal application and payment due
- Loudoun County Business
Tangible Personal Property Return * The March 1 deadline is new for 2018
15
- Monthly-filers
Form 941 federal tax deposit due
- DC sales
tax return and payment due, monthly filers
- Maryland
income tax withheld return and payment due, monthly filers
- Calendar
year Federal, DC and Maryland corporate tax returns due
- S Corporation Income Tax
Return (Form 1120S) due
- Partnership Income Return
(Form 1065) due
20
- Virginia
income tax withheld return and payment due, monthly filers
- DC income
tax withheld payment return and payment due, monthly filers
- Virginia
and Maryland sales tax return and payment due, monthly filers