Sales Tax Automation & Optimization for
Ecommerce & SaaS
End-to-end sales tax compliance with monitoring, filing, and optimization at flat rate pricing other tools can't beat.
Book a Demo
You never have to manually file or register again.
Kintsugi manages the complexity of sales tax with AI to automate filings, registrations and more — so you never have to visit a state portal website again.
Kintsugi is streamlining the state tax filings process, making a very complicated system more approachable and easier to understand.
John Roman
CEO, BattlBox
Why you should choose Kintsugi
AI Engine = Clean Data
Dirty data causes tax errors. Kintsugi’s ML cleans and labels your data as it comes is.
98.3 % fewer calculation errors out of the box
AI-powered product classification & address validation
Audit‑ready receipts stored forever
Connectors, API’s & SDK
One‑click OAuth pipes clean data straight from the systems you already use.
Shopify, Amazon, Walmart, NetSuite,, QBO, Chargebee + more
API calls are included on flat‑rate tiers
Developer-ready SDK to cut development time
3‑Minute, 7‑Click Setup
Real integrations, no CSVs, live today.
Easily integrate with Shopify, Stripe, QBO & more
Import years of sales history
Bi‑directional sync stops double taxation
Built for Global Sales
Grow into new markets without switching tools.
Support for 36 countries today, with plans to support 100+ soon
Locally-based tax experts replace customer service reps
Multi‑currency & complex entity support built‑in
How It Works
Connect
OAuth into carts & ERPs; AI scrapes 2 years of history.
Review
Dashboard shows risk heat‑map and first refund savings.
Relax
Kintsugi files, remits, and reconciles every period—hands‑free.
Friendly pricing. No annual contracts.
No more hidden fee’s, credit limits or multi-year contracts. Only pay based on your automation and sales volume needs.
Free
Best for basic needs.
$0
Start for free
No credit card required
Free nexus monitoring, physical and economic
Comprehensive exposure and historical liabilities auditing
Automated risk assessment
New nexus alerts
Address validation
Easy CSV transaction imports
No-code integrations: QuickBooks, Stripe, Chargebee, BigCommerce and more
Try now
Starter
Most Popular
Best for power user and teams.
$75
per filing or registration
Everything in Free plus...
Faster data sync
Filing and registrations
Auto File and Auto Register
Deregistrations
Automatic tax code classification
Virtual mailbox
Refunds and amendments
Exemption certificate management
24/7 live chat support
Sign-up and get started now
Premium
Perfect for enterprises and companies.
Custom
Everything in Free plus...
Fixed price
Volume based discount
API and premium connectors
Filing autopilot
Voluntary Disclosure Agreements (VDAs)
Multi-country support
Error insurance
SSO & advanced reporting
Premium support
Let’s talk
