Special tax situations

When filing your taxes, you may be required to fill out certain forms or worksheets. These requirements vary depending on your business activities and gross revenue amount.

Amend a tax return
Change and correct previously filed returns

Multiple activities tax credit (MATC)
Ensure you are not taxed twice if you file under multiple tax classifications

Service Income Apportionment
Divide your tax payments if you do business in two or more Washington cities

Square footage tax
Some Seattle businesses pay this tax when they receive tax breaks for business conducted elsewhere in the state

Revenue that you can legally subtract from your gross revenue amount

Business activities not subject to Seattle taxes