Accurate sales tax rates with our API and engine
Numeral’s sales tax platform delivers precise, real-time tax rates with zero latency, ensuring performance at any scale.
Accurate rates, anywhere – instantly
Calculate rates based on your customer’s location with granularity, including state, county, city, and district-level accuracy. Leverage our developer-friendly API directly, or use one of our integrations to get started in a snap!
Calculate sales tax for every transaction
Numeral calculates the correct tax rate based on your customer’s location and purchased products.
Built for performance and scale, our API ensures seamless, real-time calculations to keep your checkout and billing experience smooth. Battle-tested under peak demand, Numeral is ready for Black Friday and beyond.
Our platform for compliance
Stay ahead of ever-changing sales tax laws without the stress. With Numeral’s end-to-end platform, you’ll spend less than five minutes a month on compliance.
We take care of rate calculations, registrations, filing, remittance, exemption certificates, and more — so you can focus on growing your business.
Integrate with your stack
Numeral connects with the tools and billing systems you already use, making setup fast and effortless.
Sync your sales data, automate tax calculations, and pipe rates to where you need them without disrupting your workflow.
Let’s set your mind at ease.
Can’t find the answer you’re looking for? Reach out to our customer support team.
Where can I read the API documentation?
Our API documentation is available here.
How do I get started with the API?
You’ll first want to book a demo with a member of our team. After that, you can generate test API keys from your dashboard to integrate and test the API functionalities.
What SDKs are available?
Users can choose from three available SDKs: Java, Python, and Ruby. We have documentation for direct integration with our public endpoint if you have a different technology stack.
Is the API setup to handle multiple different currencies?
We support tracking the currencies used for Customer Currency, Filing Currency, and Functional Currency.
Can the API handle shipping and handling charges?
Shipping and handling charges should be treated as their own distinct products and line items. When it’s time to calculate taxes, you can pass the shipping costs as another line item to the tax/calculations endpoint.