Kintsugi

What Does Kintsugi Solve for Brands?

Kintsugi is sales tax automation built for ecommerce brands selling across Shopify, Amazon, and other channels. It handles the full compliance lifecycle including tracking where you owe tax, registering you in new states, calculating the right amount at checkout, and filing and remitting returns, so you're not stuck reconciling spreadsheets or finding out about a nexus problem after a state notice shows up. Kintsugi is used by 6,500+ businesses and supports compliance in 100+ countries.

Free, Ongoing Global Nexus Monitoring

Kintsugi tracks your sales activity in real time and flags the moment you cross a tax threshold in a new state or country, at no cost. Most brands don't find out they owe tax until a notice arrives or a platform sends a warning it can't act on. Kintsugi's monitoring runs continuously, so you know where you owe before it turns into back taxes and penalties.

Native Integrations Across Every Channel You Sell On

Kintsugi connects directly to Shopify, Amazon, Walmart, BigCommerce, WooCommerce, Stripe, QuickBooks, and 40+ other platforms. There's no custom development or engineering bottleneck. Connect your stores and start monitoring exposure in minutes.

Accurate Tax Calculation, Backed by Real Tax Experts

Kintsugi's tax classification is purpose-built for ecommerce and validated by tax experts who are in the loop when you need one, not hidden behind a paid support tier. The platform calculates sales tax with the highest accuracy across millions of transactions, and every filing is reviewable before it goes out, so you can see exactly what's being filed and why.

Not All AI Is Created Equal

Kintsugi applies AI across the compliance workflow including product classification, address validation, real-time nexus monitoring, tax research, and predictive analytics. Every critical output is reviewed and approved by a human before it's final. 

Additionally, Kintsugi's AI assistant, Kin, answers questions grounded in your actual data: your nexus footprint, transactions, filings, and exemption certificates, not generic web knowledge, and cites the help article or tax document behind every answer. Ask "what's my tax liability in Texas this month?" and get the answer immediately instead of having to click around or run a report. Kin is included for every Kintsugi customer at no additional cost.

One-Click Registration, Automated Filing, and Remittance

Once you have exposure in a state, Kintsugi manages registration, files returns on time, and remits payment automatically across every jurisdiction where you owe. No missed deadlines, no state correspondence falling through the cracks, and you stay in control of what gets registered and filed.

Flat, Published Pricing

Kintsugi charges a flat, published rate per action, with no hidden fees, month-to-month available, and no pricing that surprisingly spikes at renewal. You know what you'll pay before you sign up, and free nexus monitoring and exemption certificate management are included.

24/7 Responsive Support, Including Kintsugi Mail

You get a team that answers quickly and thoroughly, not a ticket queue or never-ending loops. 

Kintsugi Mail is a virtual mailbox included in your plan that digitizes and manages the physical mail agencies send you, so you're not the one deciphering a letter from the Illinois Department of Revenue, or trying to keep track of it all.

Exemption Certificate Management

Sales tax exemptions sound straightforward until it’s time to actually deal with one. A customer sends over a certificate and expects you to stop collecting tax. Or you're buying inventory and someone tells you you don't owe tax on it. Or you're a nonprofit and you assume that means you're covered everywhere. Kintsugi will ensure you have the right certificates required based on the category, state, customer and transaction, on file when you need them and we’ll help you get any you are missing.