Read-only connection
A WooCommerce REST API key lets Kintsugi read your store data to calculate what you owe, monitor exposure, register you where you owe, and file and remit.
Kintsugi calculates sales tax at checkout on your WooCommerce store in real time, tracks nexus in every state, and files and remits your returns.
Free exposure monitoring · Filing from $75 · No per-transaction fees
Rated 4.6/5 on G2 (55 reviews) · 7,000+ customers


Trusted by 7,000+ businesses
Kintsugi's plugin calculates sales tax at checkout in real time, so what customers pay matches what Kintsugi files.
Get alerted the moment your WooCommerce sales cross a state's economic nexus threshold, before it becomes back tax.
Kintsugi registers you where you owe, files every return, and remits on schedule, from $75 per filing or registration.
Kintsugi's plugin fits into your WordPress stack, no developer required. It calculates tax at checkout and uses the same data to monitor exposure and file every return.

Create a WooCommerce REST API key and connect it in Kintsugi. Customers, products, orders, and refunds sync automatically, with exposure tracked across every US state and 100+ countries.
Install the Kintsugi plugin, add your Kintsugi API key, and turn on tax calculation. The tax your customer sees at checkout matches what Kintsugi reports and files.
Kintsugi combines WooCommerce with every other channel you sell on, then registers you where you owe, files every return, and remits on schedule.
| Synced | What Kintsugi does with it |
|---|---|
| Orders and sales history | Tracked against every state's economic nexus threshold and used to prepare your returns. |
| Products | Classified for taxability so checkout tax and your returns rest on the right treatment. |
| Customers | Matched to the location each sale is taxed in. |
| Refunds | Applied at the transaction level so filings reflect what you actually collected. |
A WooCommerce REST API key lets Kintsugi read your store data to calculate what you owe, monitor exposure, register you where you owe, and file and remit.
The Kintsugi plugin calculates sales tax at checkout on your WooCommerce store in real time, from the same data Kintsugi files with.
Kintsugi combines WooCommerce with every platform you sell through, so nexus and filings reflect your total sales.
Stop entering or importing tax rates by hand. Kintsugi calculates tax at checkout and files the returns too.
Add Kintsugi alongside your current tool, compare results, and switch on your timeline.
Track VAT and GST exposure across 100+ countries from the same WooCommerce data.
Core WooCommerce applies the tax rates you enter by hand or import from a CSV. The WooCommerce Tax extension can calculate sales tax at checkout from your store and customer addresses.
WooCommerce's documentation is clear about the limit: WooCommerce Tax does not file returns, remit tax, or determine where your business has a tax obligation.
Kintsugi covers the whole job. Its plugin calculates sales tax at checkout in real time, and the same data drives nexus monitoring, registration, filing, and remittance.
Jared Stark
Founder of Incendico Fire Alarm Store
The setup was incredibly seamless and much faster than I expected, with clear guidance throughout the process. What really stands out is their support since it is easy to get in touch with someone quickly and the team is knowledgeable and actually helpful when you have questions.

April Walford
Operations Manager at JMXi
They corrected errors in our past returns, enrolled us quickly and efficiently, filed everything on time, and thoroughly researched any questions or concerns we had. Their customer service is excellent.

Mo Hartman
Staff Accountant at Searchspring
Having the visibility on the dashboard has been extremely helpful and the ease of being able to approve. It is very user-friendly and I can see everything I need in one place.