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Stripe Tax
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What is Kintsugi?
Founded in 2023, Kintsugi is a San Francisco-based sales tax automation company. It monitors nexus and supports tax calculation, registrations, filings, remittance, and notice handling across the US, Canada, and more than 100 countries.
Kintsugi is a sales tax compliance platform for businesses selling through ecommerce, billing, payment, and accounting systems. It connects to supported platforms or accepts transaction data by CSV, then maps revenue against physical and economic nexus thresholds. The platform supports exposure monitoring, historical liability reviews, tax calculation on supported workflows, registrations, returns, amended filings, back filings, remittance, and tax records in one workspace.
Its coverage includes US sales tax, Canadian GST, HST, PST, and QST, plus VAT and GST in the EU, UK, and more than 100 countries. Features vary by plan: the Free plan monitors exposure but does not register or file, while Premium adds real-time invoice calculation, API and SDK access, SSO, advanced exemption certificate management, and VDA management. Integration and calculation support also depend on the connected system.
Kintsugi targets ecommerce brands, SaaS and subscription companies, and other growing businesses with expanding tax obligations. Free provides global exposure monitoring, Starter covers US and Canadian compliance at $75 per completed action, and Scale and Premium use custom flat monthly subscriptions. Paid plans are month to month, with no onboarding or transaction fees listed on the pricing page. Businesses can start with exposure monitoring before paying for registrations, returns or more complex compliance services.
Key features
Nexus monitoring
Monitors physical and economic nexus across the US and more than 100 countries, with threshold alerts and historical liability auditing.
Tax calculation
Supports sales tax, VAT, and GST calculation, with real-time invoice calculation available on supported Premium workflows.
Registration management
Supports registrations and deregistrations, with Starter coverage for the US and Canada and broader coverage on Scale and Premium.
Returns and remittance
Handles filings, amended returns, back filings, and remittance support across covered jurisdictions.
Product categorization
Provides AI-assisted product categorization, address validation, and enrichment for tax compliance workflows.
Exemption certificates
Supports certificate imports on all plans, while Premium adds bulk upload, secure requests, validation, and expiration notifications.
Tax compliance API
Premium provides API and SDK access for integrating tax compliance workflows with business applications.
Kintsugi pricing
The Free plan costs $0 and provides global exposure monitoring. Starter costs $75 per completed action in the US and Canada, while Scale and Premium use custom flat monthly subscriptions. Paid plans are month to month, and the pricing page lists no onboarding or transaction fees.
| Plan | Price | What's included |
|---|---|---|
| Free | $0 | Global exposure monitoring across the US and more than 100 countries, historical liability auditing, nexus alerts, AI product categorization, address validation, Kin assistant, individual certificate import, CSV uploads, and no-code integrations |
| Starter | $75 per action in the US and Canada | Free features, registrations, filings, amended returns, deregistrations, back filings, supported autoregistration and autofiling, virtual mailbox, notice handling, reports, onboarding, and live chat |
| Scale | Custom flat monthly subscription | Starter features plus compliance in the US, Canada, EU, UK, and more than 100 countries, guided onboarding, registration updates, filing frequency changes, rejected payment support, payment plans, penalty abatement, and refunds |
| Premium | Custom flat monthly subscription | Scale features plus VDA management, real-time invoice tax calculation, advanced exemption certificate management, API, SDK, SSO, analytics, custom reporting, white-glove onboarding, and dedicated customer success |
Free trial: Free plan available with no credit card required.
Pros & cons
Pros
- Free exposure monitoring covers the US and more than 100 countries before a business buys filing services.
- Starter pricing is based on completed actions rather than transactions or state subscriptions.
- The platform combines monitoring, registration, filing, back filings, notice handling, and remittance support.
- Scale and Premium provide operational assistance with registration updates, filing changes, notices, and payment issues.
Cons
- Scale and Premium pricing is custom, so international and enterprise costs are not transparent upfront.
- Starter charges $75 for each completed registration, filing, back filing, re-file, amended return, or deregistration.
- Real-time calculation, API, SDK, SSO, and advanced certificate management require Premium.
- Kintsugi does not monitor state and provincial tax portals on behalf of customers.
Who is Kintsugi best for?
- Ecommerce brands selling through Shopify, BigCommerce, WooCommerce, and other storefronts.
- SaaS and subscription businesses consolidating revenue from Stripe or billing platforms.
- Finance teams that need registration, filing, back-filing, and notice support.
- Growing companies expanding from US sales tax into Canadian and international VAT or GST compliance.
Coverage
Integrations
Notable customers
Frequently asked questions
How much does Kintsugi cost?
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Kintsugi has a $0 Free plan for exposure monitoring. Starter costs $75 per completed action in the US and Canada, while Scale and Premium are custom flat monthly subscriptions.
How does Kintsugi work and how long does setup take?
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Kintsugi connects to a commerce, billing, accounting, ERP, or payment platform, imports revenue data, maps nexus, and supports calculation, registration, filing, and remittance. The company describes a five-step setup process but does not publish one standard implementation timeline.
How does Kintsugi compare with Avalara?
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Kintsugi emphasizes free exposure monitoring, per-action Starter pricing, month-to-month paid plans, and operational compliance support. Avalara is a larger established alternative, so the choice depends on required integrations, calculation workflows, jurisdiction coverage, and pricing preferences.
What integrations does Kintsugi support?
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Supported connections include Shopify, Stripe, Chargebee, BigCommerce, WooCommerce, QuickBooks, NetSuite, and Microsoft Dynamics 365. Kintsugi also supports CSV uploads, while real-time tax engine integrations require Premium.
Who is Kintsugi for?
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Kintsugi is designed for ecommerce, SaaS, subscription, and multichannel businesses with sales tax, VAT, or GST obligations. It suits teams that want tax operations and filing support alongside compliance software.
Is Kintsugi secure and accurate?
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Kintsugi states that it is SOC 2 Type II compliant and encrypts data at rest with AES-256 and in transit with TLS 1.2 or higher. Tax results depend on accurate product, address, transaction, and integration data.
Sources
Facts and pricing verified on October 19, 2026. Vendors change pricing often, so confirm with Kintsugi before buying. How we research
