Program fundamentals
Who runs the Streamlined Sales Tax program?
Simplify Sales Tax. Last updated 2026-09-01. Sources last verified 2026-08-20.
The Streamlined Sales Tax program is run by the Streamlined Sales Tax Governing Board, Inc., a compact of the 24 member states rather than a federal tax agency. It administers the Agreement those states signed, approves any change to it, and judges whether each state has kept its side of the deal. Authority over your own sales tax stays with the states.
That distinction bites on one day: the day you need somebody with authority to settle a question about your business, and you go looking for whoever runs this thing.
What the Streamlined Sales Tax Governing Board decides, and what your state decides
The Board’s published job is the Agreement, not your business: administering it, approving amendments and interpretations of it, and judging “each member state’s compliance with the requirements of the SSUTA”. Read that list twice and notice who’s missing from it. You are.
Table: what the Streamlined Sales Tax Governing Board decides against what each member state decides for itself. Checked August 20, 2026.
| The Board decides | Your state decides |
|---|---|
| What the Agreement says, and what its words mean | Your rate, and whether what you sell is taxable |
| Whether a state has complied, and whether it joins as a full or an associate member | Whether your returns are right, and what happens when they’re wrong |
| Which providers are certified, and what the certified work covers | Where you have to register, and how often you file |
| Who may join the program, and on what terms | Which provider you hire, and what it charges for everything else |
None of this is federal law. The Agreement carries no force of its own: each member state joined by rewriting its own statutes, and the Board then ruled on whether the rewrite was good enough. So what you’re dealing with is 24 state tax agencies that agreed to run administration the same way, with no regulator sitting above them. Rates and taxability were left out of the deal on purpose, which is why joining changes how you file and never what you owe.
Why the SST Governing Board moves slowly
Every member state gets a vote, so nothing moves until the states move together. No single state, and no provider, can drive an interpretation on its own. The Agreement shows the pace: adopted in November 2002 and amended most recently in May 2025. Good for stability. Slow when you want an answer this quarter.
The same mechanism explains the roster. A state joins by asking, and the states already in it decide whether its laws really match, which is why the list is 24 states out of the 45 with a general sales tax. Of those 24, 23 are full members, and Tennessee is an associate member, a status the Board assigned rather than a level Tennessee picked.
Who do you ask for an SST answer, the Governing Board or your state?
The state you’re registered in, and your provider. In that order.
Your state’s revenue department is the only body that can tell you whether you treated a sale in that state correctly, and the only one whose written answer is worth anything to you a year later. Your provider handles the work and the notices in the states where it files for you. The Board sits outside both of those conversations: it judges states, and states judge your filings.
Which means the answer scales with your footprint. Registered in a dozen member states, you have a dozen agencies to deal with, and the program puts nothing above them that will settle one question for all of them at once.
What does associate member status change, and which states are full members?
The Streamlined Sales Tax program has 24 member states. Twenty-three are full members, and Tennessee is the only associate member, a status it has held since October 1, 2005. The Governing Board’s own definition of an associate member is a state either in compliance with the Agreement except that its statutory and rule changes are not all in effect, or in compliance with nearly all parts of it. It is a status the Board assigns rather than a level a state picks.
Three things turn on the distinction, and only the first is open.
- Who pays your certified provider is unstated. Whether the states’ funding of certified providers reaches an associate member on the same terms as a full member is unstated in every public source. Plan against the 23 full member states and treat Tennessee as unfunded when you model.
- Amnesty conditions are written around the full member states. Tennessee is the one member state currently offering amnesty, and its conditions are its own.
- The Simplified Electronic Return is narrower there. In Tennessee it is open to remote sellers with no business location in the state, and not currently available to taxpayers who have one.
Registering through the shared system still signs you up in Tennessee alongside the full member states, and you still file there. Tennessee has its own page, and the roster is all 24 member states.
What the Streamlined Sales Tax Governing Board can’t tell you
Whether the answer you want exists yet. Where authority sits is knowable, and the table above has it. Getting your actual answer is harder than the org chart suggests, in three specific ways.
- Nobody in this program gives fast rulings. The design that makes 24 states behave alike is the same design that stops any one of them reinterpreting a rule for a single company. There is no regulator to call, no expedited process, and no appeal to the Board.
- The Board will not discuss your filings. Deciding whether you handled a particular transaction correctly isn’t on its published list of responsibilities, and the Agreement and the provider contract leave it out too. Every road here leads back to a state.
- One coverage question has no published answer. Whether the states’ funding of certified providers reaches Tennessee is unstated in every public source, which is why this site plans against 23. What associate status does and does not change is above.
An answer you can rely on comes in writing from the state agency you’re registered in, read by your own adviser. Nothing here is legal or tax advice. For the program itself, start with what the SST program actually is, and for the work the states pay for, the six providers the Board has certified.