Sales Tax Questions
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How much does a sales tax permit cost by state?

⚡ TL;DR

Most states issue sales tax permits for free, including California, New York, and Texas. A few states charge nominal fees up to $50. Alabama is the exception: it can require a security deposit equal to three times your estimated monthly tax liability, refundable after 24–36 months of compliant filing.

Most sales tax permits are free. The vast majority of states issue permits at no cost as part of their online registration process. A handful charge small fees, and one (Alabama) has a security deposit requirement for some out-of-state sellers.

Most states: free

No registration fee for most states, including the largest:

  • California
  • New York
  • Texas
  • Florida
  • Illinois
  • Washington
  • Pennsylvania
  • New Jersey
  • Ohio
  • Georgia

If you’re registering in these states (individually or through SST) you pay nothing.

States with nominal fees

A few states charge a small one-time registration fee. These fees are nominal (typically under $50) and are paid at the time of registration. The exact fee can change; always verify the current amount on the state DOR’s website before registering.

States that have historically charged registration fees include Connecticut, Hawaii, and New Mexico. If a state registration portal displays a fee during the application process, that’s the official amount for the current period.

Alabama: security deposit requirement

Alabama is the notable exception. The Alabama Department of Revenue may require an advance security deposit from out-of-state sellers based on their estimated monthly sales tax liability. The deposit formula is:

  • Three times the estimated average monthly tax liability

For a seller with $1,000/month in Alabama tax liability, the deposit would be $3,000. The deposit is refundable after a defined period of compliant filing, typically 24 to 36 consecutive months of on-time returns.

The deposit requirement applies primarily to sellers with meaningful Alabama revenue. Sellers with minimal Alabama sales typically don’t trigger it, but the assessment happens at registration, not before. Budget for the possibility if Alabama is a significant market for you.

SST registration: always free

SST unified registration through a Certified Service Provider costs nothing. The 24 SST member states compensate CSPs directly for handling compliance, there’s no cost passed to sellers for the registration itself.

Renewal fees

Almost no states charge renewal fees for sales tax permits, because most permits don’t have an expiration date. The few states that require periodic renewal (Iowa is one) typically don’t charge for it: the renewal is just a confirmation that the permit remains active.

Frequently asked questions

How much does a sales tax permit cost?
In most states, a sales tax permit is free. Some states charge a nominal registration fee, typically $10 to $50. A few states, notably Alabama, may require an advance security deposit based on estimated tax liability rather than a flat fee. SST unified registration through a Certified Service Provider is always free.
Do any states charge for sales tax registration?
Yes, a few do. Connecticut, Hawaii, and New Mexico have historically charged small registration fees. State fee structures can change, check the specific state DOR's current fee schedule before registering. The majority of states, including the largest ones (California, New York, Texas, Florida), charge nothing to register.
What is a security deposit for a sales tax permit?
Some states (Alabama is the most notable) require out-of-state sellers to post a security deposit before receiving a permit. The deposit is based on estimated monthly tax liability and is held by the state to cover potential non-payment. It's refundable after a period of compliant filing (typically 2–3 years). The security deposit requirement applies primarily to sellers with significant Alabama tax liability, not to sellers with minimal Alabama sales.
Is there a cost to register for SST through a CSP?
No. SST registration through a Certified Service Provider is free. The CSP is compensated by the SST member states for administering compliance, so there's no registration fee passed to the seller. This covers registration in all 24 SST member states simultaneously.

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