August
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
- Federal,
DC and Maryland Individual Income Tax Returns due, if Form 4868 or first extension
request was filed
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