Sales tax calculator

To calculate sales tax, multiply your customer’s order total by the combined sales tax rate for their location. The combined rate includes the state base rate plus any applicable county, city, or district taxes.

You can look up the combined rate for any U.S. address using the calculator above, or use TaxCloud to apply the correct rate automatically at checkout.

The rate depends on your customer’s exact address — not just their state. The combined rate includes the state base rate plus any local taxes that apply to their specific county, city, or district. Use the calculator above to look up the combined rate for any U.S. address.

If you run an ecommerce or SaaS business that sells online to customers out of state, you need to calculate and charge sales tax in all states where you have nexus.

In most states, businesses trigger economic nexus when they make over $100,000 in sales or more than 200 transactions. You can also trigger nexus if you have a physical location or remote employees in a state. Every state has different nexus threshold rules, so it’s critical to monitor your nexus exposure to ensure you’re compliant.

TaxCloud monitors your nexus exposure and notifies you when you’re approaching a state’s economic threshold. When you establish nexus TaxCloud also automates registration, so you can start collecting and remitting taxes on time.

For online purchases, sales tax is calculated at checkout based on your customer’s shipping address. The rate is determined by their exact location, down to the ZIP code, and applied automatically if you’re using a sales tax API or software integration.

TaxCloud calculates the correct rate in real time across 13,000+ U.S. jurisdictions, so the right amount is collected at checkout without manual lookup or rate maintenance on your end.

How often you should file sales tax returns for your business depends on where you sell. Most states require you to file and remit sales tax monthly or quarterly, but each state has different sales tax due dates and sales tax filing frequency requirements. Your filing schedule typically depends on your revenue or how much sales tax you collect.

TaxCloud automates sales tax filing and remittance, so you don’t have to worry about keeping up with different filing schedules or risk missing deadlines as you sell in more states.

Yes, significantly. The state rate is just the floor. Counties, cities, and special districts can add their own taxes on top, which means two customers in the same state can owe very different rates. In Colorado, the state rate is 2.90% — but a customer in Denver pays 7.71% once local taxes are added. This is why ZIP code-level accuracy matters when calculating what to charge.

Sales tax rates change frequently. States and localities adjust rates, add new taxes, or remove existing ones throughout the year. TaxCloud’s API continuously updates rate data across 13,000+ U.S. jurisdictions, so you’re always charging the current rate without having to track changes manually.