Read-only connection
Imports your orders, customers, products, and refunds so Kintsugi can track nexus, calculate what you owe, and prepare your filings.
Kintsugi calculates sales tax at checkout in real time on your Checkout Champ campaigns, 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 tax plugin calculates sales tax at checkout in real time on each campaign, upsells and order bumps included.
Every Checkout Champ order counts toward each state's economic nexus threshold, with an alert the moment you cross one.
Kintsugi registers you where you owe, files every return, and remits on schedule, from $75 per filing or registration.
Checkout Champ runs your checkout, upsells, and recurring offers. Kintsugi uses that order data to calculate tax at checkout, track nexus, and keep every return filed as campaigns scale.

Create a read-only API user in Checkout Champ and connect it in Kintsugi. Orders, customers, transactions, products, and refunds sync, upsells and order bumps included.
Activate the Kintsugi tax plugin, then choose it as the Tax Service on each campaign. Tax is calculated in real time on every checkout, shipping included where taxable.
Kintsugi registers you where you owe, files every return, and remits on schedule, backed by reporting that keeps you ready for an audit.
| Synced | What Kintsugi does with it |
|---|---|
| Campaign orders | Imported with upsells and order bumps for nexus tracking and what you owe. |
| Customers | Synced to determine where each order is taxed. |
| Products | Classified for taxability, so the plugin taxes each item correctly at checkout. |
| Transactions | Counted toward nexus thresholds alongside your orders. |
| Refunds | Adjust liability so your filings reflect what you actually collected. |
Imports your orders, customers, products, and refunds so Kintsugi can track nexus, calculate what you owe, and prepare your filings.
Sends each checkout to Kintsugi and returns the calculated tax in real time, on every campaign where the plugin is active.
Order bumps and one-click upsells are taxed at checkout like the core offer, then counted toward nexus.
Recurring orders sync with every other sale, so your exposure stays current as your continuity base grows.
Select Kintsugi on each campaign's Tax Service; our team can help activate it across every campaign you already run.
Run Kintsugi in parallel with your current tax plugin, with no campaigns to rebuild, then switch on your timeline.
Checkout Champ's built-in tax runs on tax profiles you set on each campaign: you enter a rate by country or zone, state, and optional postal code, and it applies from the shipping address, or the billing address for products that don't ship.
Checkout Champ describes this as a basic suite of tax features, not a full tax engine, and points merchants with complex tax needs to its tax service plugins. Every rate in a tax profile is one you enter and keep current.
Kintsugi is one of those tax service plugins. It determines the rate at checkout in real time on each campaign, and the same order data drives nexus tracking, registration, filing, and remittance.
Sources: Checkout Champ: Taxes, Checkout Champ: Tax services, Checkout Champ: Kintsugi plugin
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.