Sales tax software & calculator for small business

Sales tax is a state or local tax on the sale of certain goods and services. The customer pays it at the point of sale, and the business collects it and sends it to the appropriate tax authority on a set schedule. Startups and small businesses need to collect and remit sales tax in states where they are registered and required to do so.

Sales tax nexus is the connection between your business and a state that requires you to collect and remit sales tax there. You create nexus through physical presence (like an office, employees, or inventory) or by exceeding a state’s economic sales threshold. Review where you operate and compare your sales to each state’s rules to determine where you must register and collect.

You’re required to collect sales tax in states where you have sales tax nexus, meaning you either have a physical presence or exceed that state’s sales threshold (often based on revenue or number of transactions). Once you meet a state’s sales tax thresholds, register with the state’s tax agency and charge the correct sales tax rate on orders shipped there.

The correct sales tax rate depends on where the sale takes place, including state, county, and local rates. You can look it up using your state’s tax agency or let software like QuickBooks calculate it automatically based on the sale location.

Sales tax is calculated by applying the correct rate to the taxable sale amount. You can use a sales tax calculator or software like QuickBooks to automatically determine the rate and calculate the tax based on location and item type.

Use tax is a tax on the use, storage, or consumption of taxable goods and services in a state when no sales tax or not enough sales tax was paid at the time of purchase. Sales tax is generally collected by the seller at checkout in the state where the sale occurs, while use tax is usually self‑reported and paid by the buyer to their state tax agency when they owe tax on an untaxed or under‑taxed purchase.

Some states tax services, digital products, and shipping, while others do not. Sales tax rules vary widely, so you need to follow the laws where your business has a tax obligation (nexus). Using software like QuickBooks can help apply the correct tax treatment based on location and item type.

Look for software that automatically calculates the correct tax rates based on location, tracks changing tax rules, and applies the right taxability to products and services. It should also support filing and reporting to help you stay compliant across states.

QuickBooks automatically calculates the sales tax rate for each sale based on the customer’s location, the item sold, and current tax rates. It tracks the tax you collect and organizes what you owe by tax agency, so you can see your liabilities clearly. You can then review amounts by agency in one place before filing.

The QuickBooks Sales Tax AI Agent helps you review your sales tax return before filing. It compares income reported on your Profit and Loss statement with the net sales reported on your sales tax return to identify potential discrepancies. The tool then flags those transactions and suggests adjustments to help you file with greater accuracy.