Registering & Onboarding
Everything you need to register your business for sales tax in new states.
8 articles
Registrations & State Portals
Things to know about states and registrations
- Registration-Related FeesWhat state-required registration fees to expect during onboarding and why they appear on your bank statement.
- International Customers: Registering and Filing in the USWhat international companies need to register for US sales tax: US address, FEIN, US bank account, plus optional SSN/ITIN and incorporation guidance.
- Registering your business as a foreign entity (out-of-state seller) in new statesState-by-state links for registering as a foreign (out-of-state) business entity, required before Zamp can register you for sales tax.
State Resources
Helpful resources related to the states
- California Portal Access InstructionsCalifornia 2FA Instructions
- Multi-state Portal Access InstructionsHow to add [email protected] as an MFA email on state tax portals (AL, CO, GA, and 20+ other states) so Zamp can file for you.
- Washington Portal Access InstructionsHow to add [email protected] as an additional email in your Washington My DOR account so Zamp can file on your behalf.
- State Tax Filing Portal LinksDirectory of official state tax filing portal login links for all US states with sales tax plus DC.