Let the states cover the cost of your sales tax technology

25 states will pay for the cost of your sales tax calculations, returns preparation, and filing when you partner with Avalara. Find out if you qualify.

Real cost savings

Are you on the hook to file and remit sales tax in new states? If you qualify, member states of the Streamlined Sales Tax (SST) program will cover the cost of registration, sales tax calculations, returns preparation, and state filing and remittance for your business. Avalara is an SST certified service provider (CSP).

How it works

SST is an effort by state and local governments to simplify sales tax compliance for qualifying businesses. Participation in SST is voluntary for both businesses and states. When you sign up for Avalara AvaTax, we work with you to determine if you qualify for the program and help you register in participating SST states. 

Contact us to get started

Learn about the benefits 

If you sell into multiple states, you already know that sales tax is hard, and new state tax laws aren’t making it easier. 

SST makes the process a lot easier by lowering the cost of compliance and reducing your audit risk.


Participating states

The active members of SST are: Arkansas, Georgia, Indiana, Iowa, Kansas, Kentucky, Michigan, Minnesota, Nebraska, Nevada, New Jersey, North Carolina, North Dakota, Ohio, Oklahoma, Pennsylvania,* Rhode Island, South Dakota, Tennessee, Utah, Vermont, Washington, West Virginia, Wisconsin, and Wyoming.

*Pennsylvania runs independently of SST through a similar state-run program.

Full member states
Full member states
Associate member states (flex to full)
Associate member states (flex to full)
Advisory states (not conforming)
Advisory states (not conforming)
Non-sales tax states
Non-sales tax states
Project states (not advisory)
Project states (not advisory)
Non-participating state
Non-participating state

Full member states

Associate member states flex to full

Advisory states not forming

Non-sales tax states

Project states not advisory

Non-participating state


Should I register right away?

The SST program makes more sense for some businesses than others, depending on sales volume in participating states and other factors. Avalara can help you determine if it's right for you and assist with the registration process.


Why use Avalara

No-cost sales tax services
No-cost sales tax services

As a CSP, Avalara provides free sales tax calculations, preparation, and filing in all the states where you qualify as an SST volunteer seller.

Help with new sales tax nexus laws
Help with new sales tax nexus laws

Registering and filing in multiple states where you have new tax obligations is easier on your business when you partner with a CSP. Avalara can help you determine where you’ve triggered economic nexus and provide assistance with registering and filing in new states.

Easy SST registration
Easy SST registration

We’ll register your business with participating SST states at no cost. Previously registering to collect sales tax in a state doesn’t preclude you from taking advantage of SST in that state.

Unlimited tax calculations
Unlimited tax calculations

Avalara will apply SST-based rates and rules to applicable transactions to deliver real-time sales tax calculations to your shopping cart — at no cost in the states where you qualify as an SST volunteer seller.

Audit relief
Audit relief

Get Avalara’s help if you’re audited in the states where you qualify as an SST volunteer seller. We’ll work with state auditors on your behalf.

One of the few certified providers
One of the few certified providers

Most automated tax solutions are not state-certified service providers. Partnering with Avalara improves tax compliance and reduces costs.

Sales tax solutions for all businesses

Even if you don’t qualify as an SST volunteer seller in all states, you can still lessen the burden of sales tax compliance with affordable solutions from Avalara.

Calculate sales tax

Real-time sales tax calculations flow directly from a powerful tax engine to your shopping cart or invoicing system in nanoseconds.

File sales tax

You'll barely lift a finger as Avalara tallies what you owe in the jurisdictions you designate, prepares and files your returns, and remits payments for you.

Manage tax compliance documents

Collect, store, and renew tax documents in the cloud. Our easy-to-use solution syncs with other tax software to apply exemptions at checkout.

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