City of Portland business licenses are actually a business revenue tax. View the FAQs that the city's Revenue Bureau has put together.

Almost all businesses doing business in the city are required to submit a Registration Form (for the City of Portland Business License) within 60 days of starting a business in the City.

Businesses grossing less than $50,000 per year from all sources before expenses may be exempt from an actual license but must still file a Registration Form. No payment is due with this registration form.
Registration and licensing can be done online. No payment is due at the time of registration. For more information, call the Bureau of Revenue at (503) 823-5157.