Beginner Quick Answer
Who is responsible for collecting sales tax — the buyer or the seller?
⚡ TL;DR
The seller is responsible. Once you have nexus in a state, you collect tax from buyers, hold it, and remit it to the state on your filing schedule. If you forget to collect, the liability doesn't disappear — you owe the tax out of your own revenue. Marketplace facilitators like Amazon shift this responsibility for sales they process, but only for those specific transactions.
The seller is responsible. Sales tax is collected by the seller, held in trust, and remitted to the state on the buyer’s behalf. If you have nexus in a state and make a taxable sale, the obligation to collect and remit is yours, not the buyer’s.
Key takeaways
- Sellers with nexus must collect tax on taxable sales and remit it to the state on the filing schedule the state assigns
- If you fail to collect tax from a buyer, you still owe that tax to the state: the liability doesn’t disappear because the customer didn’t pay it
- Buyers technically owe “use tax” when sellers don’t collect, but states almost never pursue individual consumers, they go after sellers
- Marketplace facilitators (Amazon, Etsy, Walmart Marketplace) shift this responsibility to the marketplace for sales they facilitate, but only for those specific transactions
- In Hawaii and New Mexico, the tax is technically levied on the seller’s gross receipts, not collected from the buyer, but sellers pass it through as a line item in practice
Frequently asked questions
Who is responsible for collecting sales tax?
The seller is responsible for collecting sales tax from buyers and remitting it to the state. If a seller with nexus fails to collect, the state can still pursue the seller for the uncollected tax. The buyer may technically owe use tax on purchases where sales tax wasn't collected, but states enforce that obligation against sellers, not individual consumers.
What happens if I forget to collect sales tax from a customer?
You still owe the tax to the state. Failing to collect doesn't eliminate your remittance obligation, it just means the tax comes out of your own revenue instead of the customer's payment. This is why uncollected-period exposure can be significant: the liability is yours regardless of what the buyer paid.
Looking for more answers on this topic?
Browse Sales Tax Basics & Fundamentals