Certified Providers

The following providers are certified by the Streamlined Sales Tax™ Governing Board.



The following CSP's systems are certified by the Streamlined States, but they are not currently offering free services under Streamlined's CSP program.


FAQs - about Certified Service Providers


CSP FAQs for Sellers

What taxes do CSPs administer and report for the seller?
Can a CSP provide services in addition to CSP services? Are there charges for these services?
What are the benefits of using a CSP?
What are the benefits of using a Certified Automated System (CAS)?
How do I report use tax and other taxes currently reported on my sales tax returns?
Can I use a Certified Service Provider (CSP) if I'm not registered through the SSTRS?
I'm already registered through the SSTRS, can I start using a Certified Service Provider (CSP)?
Do I get state compensation for filing and paying tax if I contract with a Certified Service Provider (CSP)?
How is the Certified Service Provider (CSP) paid for its services?
What is a "CSP-compensated seller" for purposes of CSP compensation?
Do I receive liability relief if the CSP calculates the wrong tax amount?
What is a Technology Model?
Is there an allowance for CAS users?
What is the difference between a CAS and a proprietary system?

CSP Compensation FAQs

Can a seller's status change for purposes of CSP compensation?
Does a CSP get compensation if the taxes are not remitted to the state by the due date?
Is there a monetary allowance for CAS users?
Does a CSP get compensation for use tax a seller reports through the CSP on items the seller uses?
Does a remote seller qualify for free CSP services?


How does the CSP remit the tax collected from sellers?

Audit FAQs

Are there differences in audits of sellers that use a CSP and those that don't?
Will a seller that contracts with a CSP be audited by all states?
What is personally identifiable information?