How to set up sales tax & nexus
US sales tax depends on the buyer's zip code and on where your business has tax nexus. ResaleOS ships with zip-level rates for every US state and lets you register the states where you actually collect — Pro plans get full auto-calculation by address at checkout.
Not tax advice
ResaleOS gives you the tools to collect tax accurately. Whether or not you have nexus in a state is a legal question — talk to your accountant before registering.
Open Settings → Taxes
The Taxes page has three sections: a default fallback rate, your registered nexus states, and (on Pro) auto-tax service settings.
Taxes
Default tax rate
Used as a fallback when an order has no matching nexus state.
Registered states
States where you collect sales tax automatically
Register a nexus state
Click "Add state", search for the state where you have nexus, and (optionally) add your registration ID. ResaleOS uses zip-level rate tables to calculate tax for every order shipped into that state.
Add nexus state
Pick the state where you have a tax registration
Tip: ResaleOS warns you when your sales in an un-registered state cross the economic nexus threshold (e.g. $100K or 200 transactions per year) so you can register proactively.
(Pro) Turn on auto-tax service
Pro plans can enable our auto-tax service, which uses live address-based rates and rooftop-accurate jurisdictions. Below the registrations list you'll find a toggle to enable it per workspace.
Auto-tax by address
ProCalculate tax automatically at checkout using rooftop-accurate rates for every registered state.
How tax is calculated
Zip-level rates
We ship with quarterly-updated rate tables for every US zip code, including state, county, city, and special district components.
Tax-inclusive prices
Toggle Tax inclusive on the Taxes page to display tag prices that already include tax. We back out the tax portion at checkout.
Consignor splits
Choose whether the split is calculated on pre-tax or post-tax amounts — the consignor's share adjusts accordingly.
Economic nexus alerts
ResaleOS tracks revenue and transactions per state and flags any state where you're approaching the registration threshold.
Multi-state nexus headache?
If you sell into half a dozen states and your accountant just mumbled the word “nexus,” auto-tax on Pro is built for you. We'll walk through your specific footprint on a call.