Sales tax looks simple until you sell across state lines or sell something unusual. Then it becomes a patchwork of registrations, rates, exemptions, and deadlines. Because the tax you collect belongs to the state, mistakes are costly.
Signs you should hire help
- 1You sell in more than one state or ship to customers nationwide.
- 2You are unsure whether you have nexus anywhere besides your home state.
- 3Your products or services have unclear taxability.
- 4You have missed filings or received a notice.
- 5You use multiple sales channels, each handling tax differently.
- 6The filing takes more time than it is worth, or you dread it.
What a sales tax filing service does
- Reviews where you have nexus and which states you must register in.
- Registers your business with state agencies.
- Determines taxability and rates by product and location.
- Prepares and files returns on each state's schedule.
- Remits the tax you collected.
- Reconciles sales tax payable to your books.
- Monitors notices and rate or rule changes.
Why it matters
Sales tax collected from customers is held for the state. Failing to remit it can lead to penalties and interest, and in many states responsible individuals can be personally liable. Not collecting when required leaves the business owing the tax out of its own pocket. For multi-state questions, see our guide to multi-state sales tax compliance.
What to confirm before you hire
- Which states and filings are included, and who handles registration?
- How the provider gets your sales data and what it needs from you.
- Who is responsible if a return is wrong or late?
- Whether prior-period exposure is reviewed, not just future filings.
- How the work ties to your bookkeeping and tax preparation.
If you are already behind
Many states have voluntary disclosure programs that may limit penalties and lookback periods for businesses that come forward before being contacted. Eligibility and terms vary by state, so ask a professional before filing late returns on your own.
For local business basics, see our sales tax guide. Our sales tax compliance service covers registration through filing. To discuss your sales tax needs, tell us where you sell and what you sell.
