TaxJar Guarantee

Let us take sales tax calculations & compliance off your plate.

TaxJar SmartCalcs Customers

eCommerce sellers have a business to run. Don’t waste time on complicated sales tax rules.
Let SmartCalcs simplify your sales tax for you.


Accurate Sales Tax Calculations

Accurate sales tax rates & calculations at the state, county city and special taxing district level. No more fussing with rate tables or chasing down tax changes. You charge the customer the right amount, every time.

Shipping Taxability

Some states require sales tax on shipping charges, others don’t. We take care of this so you never have to worry.

Multi-State Nexus

As you move into more states your sales tax becomes exponentially more complex. No matter in how many states you have to charge sales tax, TaxJar has your back.

Product-Level Taxability

Certain products, including dietary supplements, clothes and food are taxed at a reduced rate in some states and are sometimes even tax exempt. From clothing in New York to food in California, SmartCalcs supports special sales tax circumstances for the products you sell.

Automated Reporting

TaxJar Reports is included for all SmartCalcs transactions. Enjoy jurisdiction-level sales tax reporting in every state to make sales tax tracking and filing a breeze.

Sourcing Rules

Handles origin-based and destination-based sales tax sourcing rules. Don’t spend another minute figuring out every state’s complex sales tax sourcing systems.

International Support

Selling in the European Union or Canada? No problem. SmartCalcs supports VAT tax calculations in those countries, including support for reduced-rate and super reduced-rate product categories. Need support for other countries? Reach out and let us know!

Easy to Use and Developer Friendly

SmartCalcs uses modern, RESTful APIs and will save your developers lots of time and headaches. Implementation is easy, with no contracts or set-up fees. You can be up and running in minutes. Check out our documentation for more.

Sandbox Environment

Run automated tests against our API sandbox to perform sales tax calculations and validate unique transaction scenarios. It works great with continuous integration tools to ensure your specs are always passing. Automatically generate live and test API tokens after signing up.

High Performance & Reliability

Our sales tax API clocks in at sub-75ms with 99.99% uptime. Check our status page for the breakdown.

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Support for Multi-Channel Sellers

Do you also sell on other channels? Check out SmartCalcs + Reporting to simplify your business’s sales tax across the board. Learn more about SmartCalcs + Reporting

Common Questions

Feel free to contact us if you can't find the answer to your question. We're happy to help you.

How do I get a SmartCalcs API token if I’m already a TaxJar customer?

If you already have a TaxJar account, click here to go to your TaxJar account page. Select the "SmartCalcs API" tab on the left. Press the button that says "Generate API Token". Your API token will appear within a few seconds.

Can I use the SmartCalcs API to also file sales tax returns?

While the API doesn’t provide this, the application does. When you set up a TaxJar account to get an API token, you also get access to our full application.

In what countries does SmartCalcs provide sales tax rates?

Today SmartCalcs supports tax rates in the United States, Canada, Australia, and European Union. Stay tuned for New Zealand.

I want to use TaxJar’s sales tax calculations in my WooCommerce or Magento store. Is SmartCalcs right for me?

To make your life easier, we’ve created custom sales tax collection expressly for WooCommerce and Magento sellers.

How long does it take to implement SmartCalcs?

It depends on your current system. If you already collect all of the necessary information from your customers, you can be up and running, receiving accurate sales tax calculations, in minutes. Seriously.

Does SmartCalcs support marketplaces that need to provide sales tax calculations for multiple merchants?

Absolutely - our sales tax API was designed specifically for that.

How can I get my transaction history into TaxJar in order to file my sales tax returns?

The best way to get transaction history into TaxJar is through our API. Just view our Transactions endpoint documentation. The second way is to export your transactions to a CSV format that can be directly imported into TaxJar.

Do you have a sandbox for developers and how can I get my sandbox API token?

Yes. All developers that partner with TaxJar have access to our developer sandbox. You can generate your sandbox API token by navigating to your account and selecting "Sandbox Token" from the menu options. More instructions found here.

TaxJar Guarantee

SmartCalcs Accuracy Guarantee

Our calculations are over 99% accurate and we offer an accuracy guarantee for all SmartCalcs customers. Learn more about our guarantees

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