Read-only connection
Shopify keeps collecting sales tax at checkout. Kintsugi reads your Shopify data to calculate what you owe, monitor exposure, register you where you owe, and file and remit your returns.
Shopify collects tax at checkout. Kintsugi calculates what you owe in every state and country where you sell, tracks nexus, 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 classifies your products and calculates what you owe wherever you sell, straight from your Shopify orders.
Get alerted the moment your Shopify 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 reads your Shopify orders to calculate what you owe, classify your products, and keep every return filed on time, without touching your checkout.

Install the Kintsugi app from the Shopify App Store. Your orders, products, customers, refunds, POS locations, and shop information sync automatically, and nothing changes at checkout.
Kintsugi classifies every product for taxability and calculates what you owe in every US state, plus VAT and GST in 100+ countries, from your Shopify orders.
Kintsugi registers you where you owe, files every return, and remits on schedule, with the reporting you need to stay audit-ready.
| Synced | What Kintsugi does with it |
|---|---|
| Orders | Tracked against every state's economic nexus threshold and used to prepare your returns. |
| Products | Classified for taxability so exposure and liability are built on the right foundation. |
| Customers | Matched to the location each sale is taxed in. |
| Refunds | Applied at the transaction level so filings reflect what you actually collected. |
| POS locations and shop information | Keeps in-person and online sales in one system of record. |
Shopify keeps collecting sales tax at checkout. Kintsugi reads your Shopify data to calculate what you owe, monitor exposure, register you where you owe, and file and remit your returns.
Get told the moment your Shopify sales cross a state's economic nexus threshold, before it becomes back tax.
Connect Shopify without changing how you sell, run both in parallel while you evaluate, and move filing over on your timeline.
Track VAT and GST exposure across 100+ countries using the same Shopify order data.
Shopify calculates and collects sales tax at checkout. Once your store passes $100,000 in sales, Shopify Tax charges a fee on every order (0.35% on Basic, Grow, and Advanced plans, 0.25% on Plus in the US, up to $0.99 per order), and for stores created on or after May 13, 2026, that $100,000 is a lifetime total that never resets.
Filing is where it stops. Shopify says it doesn't file or remit your taxes unless you use its automated filing, which is closed to new enrollment and excludes imported orders, marketplace sales, and amended returns. Deciding where you owe tax and registering there stays with you.
Kintsugi works alongside Shopify's checkout: it reads your Shopify orders, calculates what you owe, tracks economic nexus across every US state, and registers, files, and remits returns for you. Monitoring is free, and filing starts at $75 per filing or registration, with no per-state subscription and no per-order fees.
Compare Kintsugi and Avalara for Shopify
Sources: Shopify Tax pricing, Shopify Tax in the US, Shopify automated filing considerations
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.