Read-only connection
Rillet stays your ledger. Kintsugi reads your invoices, credit memos, customers, and products to calculate what you owe, monitor exposure, register, file, and remit.
Kintsugi calculates sales tax on your Rillet invoices in real time, tracks nexus in every state and country you sell into, and files and remits your returns.
Free exposure monitoring · Filing from US$75 (approx. £57) · No per-transaction fees
Rated 4.6/5 on G2 (55 reviews) · 7,000+ customers
Trusted by 7,000+ businesses
Kintsugi's tax engine calculates sales tax the moment invoices flow out of Rillet, so your ledger and your tax never drift apart.
Your Rillet invoices are tracked against every state's economic nexus threshold and VAT and GST rules in 100+ countries.
Kintsugi registers you where you owe, files every return, and remits on schedule, from $75 per filing or registration.
Rillet closes your books fast. Kintsugi does the same for tax: it calculates on your Rillet invoices, tracks where you owe, and files returns, without a CSV export in sight.

Connect Rillet to Kintsugi and your customers, invoices, credit memos, and products sync automatically, with no manual exports or duplicate entry.
Kintsugi's tax engine calculates sales tax on Rillet invoices as they're created, and calculates what you owe in every US state plus VAT and GST in 100+ countries.
Kintsugi registers you where you owe, files and remits every return on schedule, and keeps the reports you need to stay audit-ready.
| Synced | What Kintsugi does with it |
|---|---|
| Customers | Synced to determine where each sale is taxed. |
| Invoices | Taxed as they're created and used to calculate what you owe in every jurisdiction. |
| Credit memos | Applied against liability so filings reflect what you actually collected. Shipping on credit memos syncs as zero. |
| Products | Classified for taxability by jurisdiction. |
Rillet stays your ledger. Kintsugi reads your invoices, credit memos, customers, and products to calculate what you owe, monitor exposure, register, file, and remit.
Kintsugi calculates sales tax on your Rillet invoices as they're created, so what you book matches what you owe.
Run Kintsugi beside your current provider during evaluation, then move calculation and filing over on your timeline.
Kintsugi works from the invoice, customer, and credit memo data flowing through every Rillet entity you run.
Track VAT and GST exposure across 100+ countries from the same Rillet invoice data.
Rillet handles sales tax through connected tax providers. Its integrations page lists Avalara, Anrok, Taxwire, Zamp, Kintsugi, CereTax, Numeral, and Sphere, and its announcements say tax is calculated and added to the invoice through the provider you connect.
Rillet's own pages describe what the connection does to invoices: with Avalara or Anrok, tax shows on the invoice, and credit memos, refunds, and cancellations made in Rillet are reflected in the provider. Where you owe, registrations, and filings sit with the provider you pick.
Kintsugi is built for that seat. Its tax engine calculates sales tax on your Rillet invoices in real time, tracks nexus in every state, and registers, files, and remits for you.
Sources: Rillet tax integrations (Taxwire page), Rillet and Avalara partnership, Rillet and Anrok integration
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.
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