Streamlined Sales Tax® Registration System
(SSTRS)
Register to collect and remit sales tax in
all Streamlined States
Already Registered? LogIn
You are responsible for collecting and remitting sales tax to each state beginning with your “registration date”.
Total Active Registrations: 33,447
(29.6% of the businesses registered through the SSTRS contract with a CSP™)
(as of 2/28/2026)
Streamlined Full Member States
Click on state for state specific information
Associate Member States
The Streamlined Sales Tax® Member states created the Streamlined Sales Tax® Registration System (SSTRS) to provide you a simple and free system to register for sales and use tax in their states.
What this registration is for: A permit or license to collect and remit sales and use tax in the states you select. You are required to register in each state in which you have met the physical or economic nexus standards or any other requirement of the state. You may register directly with the state or through the SSTRS. Contact the state for other taxes or licensing requirements you may have.
Who can register: Any seller may register, even if you are already registered in a state.
Who must register through the SSTRS: Any seller that wants to contract with a Certified Service Provider™ (CSP™). The CSP will provide services for each Streamlined Sales Tax State you are registered in through the SSTRS.
Cost: There is no fee to register through the SSTRS. (Note: A state may charge a fee if you are legally required to register in that state.)
Reporting Sales Tax: Sales tax is reported and paid directly to each state, using the state's online filing system based on the filing frequency that state sets. Returns must be filed even if you have no sales in that state. Most states will send you registration and reporting information within 15 business days. (No returns are filed through the Streamlined Sales Tax Registration System.)
Important: Except for states offering amnesty, registering through this system does not relieve you of any tax liability you may have relating to prior sales or purchases. Contact the state to discuss your registration requirements and any prior tax liability.
Need Help with your Tax Calculations and Reporting?
A Certified Service Provider™ (CSP™) provides the software and services necessary to calculate the sales or use tax due on a transaction, prepare and file the required returns and make the remittances to each Streamlined State you are registered for through this system.
Learn more about CSPsTM and if you qualify for free CSPTM services before you register.
If you are interested in using a CSP, contact the CSP to discuss their software and services before you register. The CSP can register your business. If you register prior to the date you and the CSP agree the CSP will begin filing returns and making remittances on your behalf, you are responsible for filing the returns until the CSP begins filing. (If you need to file returns prior to being under contract with a CSP you can register at any time.)
State Registration Guidelines for:
Do you qualify for free sales tax calculation and reporting services? Learn more before you register
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Certified Service ProvidersTM (CSPTM)
The following providers are certified by the Streamlined Sales Tax™ Governing Board.
AccurateTax
AccurateTax delivers fast, precise, and fully SST‑certified sales tax calculations directly inside your online store, so you can stay compliant without the complexity.
For more than 20 years, AccurateTax has helped retailers of every size manage the entire sales tax lifecycle with confidence. As a Certified Service Provider (CSP) with the Streamlined Sales Tax program, we provide a trusted, compliant, and affordable solution designed to support sellers of any size, from growing ecommerce brands to Fortune 500 companies.
Why Retailers Choose AccurateTax
SST‑Certified Accuracy You Can Trust
AccurateTax applies the latest SST‑approved rules, rates, and product taxability codes in real time. You get consistent, audit‑ready results across all participating states.
Easy Integration with Your Ecommerce Platform
Whether you use a major shopping cart or a custom-built system, AccurateTax fits seamlessly into your workflow.
- Ready‑made plug‑ins for popular ecommerce platforms
- A flexible, well‑documented API for custom integrations
- Fast onboarding with minimal development time
End‑to‑End Sales Tax Support
AccurateTax helps you manage every step of compliance:
- Real‑time tax calculation
- Collection and reporting
- Filing and remittance in SST states
- Access to certified rules and uniform filing requirements
We make it simple for retailers to stay compliant as they grow into new states.
A CSP Focused on Affordability, Simplicity, and Service
As a Certified Service Provider, AccurateTax delivers:
- SST‑compliant services designed to reduce your compliance burden
- Affordable pricing for retailers of all sizes
- Straightforward onboarding with real people available to help
- Reliable, scalable technology built for modern ecommerce
AccurateTax brings certified accuracy to your online point of sale, ensuring you calculate, collect, report, and remit the correct tax, every time.
Get Started with AccurateTax
Whether you’re expanding into new states or looking for a more dependable sales tax partner, AccurateTax makes compliance easier, faster, and more predictable.
Let us help you simplify sales tax. Contact us today to learn more about integrating AccurateTax with your online store.
Email: sstp@accuratetax.com
Website: https://www.accuratetax.com
Phone: 866-400-2444
The following CSP's systems are certified by the Streamlined Sales Tax States, but they are not currently offering free services under Streamlined's CSP program.
AccurateTax
AccurateTax delivers fast, precise, and fully SST‑certified sales tax calculations directly inside your online store, so you can stay compliant without the complexity.
For more than 20 years, AccurateTax has helped retailers of every size manage the entire sales tax lifecycle with confidence. As a Certified Service Provider (CSP) with the Streamlined Sales Tax program, we provide a trusted, compliant, and affordable solution designed to support sellers of any size, from growing ecommerce brands to Fortune 500 companies.
Why Retailers Choose AccurateTax
SST‑Certified Accuracy You Can Trust
AccurateTax applies the latest SST‑approved rules, rates, and product taxability codes in real time. You get consistent, audit‑ready results across all participating states.
Easy Integration with Your Ecommerce Platform
Whether you use a major shopping cart or a custom-built system, AccurateTax fits seamlessly into your workflow.
- Ready‑made plug‑ins for popular ecommerce platforms
- A flexible, well‑documented API for custom integrations
- Fast onboarding with minimal development time
End‑to‑End Sales Tax Support
AccurateTax helps you manage every step of compliance:
- Real‑time tax calculation
- Collection and reporting
- Filing and remittance in SST states
- Access to certified rules and uniform filing requirements
We make it simple for retailers to stay compliant as they grow into new states.
A CSP Focused on Affordability, Simplicity, and Service
As a Certified Service Provider, AccurateTax delivers:
- SST‑compliant services designed to reduce your compliance burden
- Affordable pricing for retailers of all sizes
- Straightforward onboarding with real people available to help
- Reliable, scalable technology built for modern ecommerce
AccurateTax brings certified accuracy to your online point of sale, ensuring you calculate, collect, report, and remit the correct tax, every time.
Get Started with AccurateTax
Whether you’re expanding into new states or looking for a more dependable sales tax partner, AccurateTax makes compliance easier, faster, and more predictable.
Let us help you simplify sales tax. Contact us today to learn more about integrating AccurateTax with your online store.
Email: sstp@accuratetax.com
Website: https://www.accuratetax.com
Phone: 866-400-2444