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?