Kintsugi
Kintsugi automates U.S. sales tax compliance so small and mid-sized businesses stop missing nexus deadlines.
Independent overview by new Mantra · updated July 22, 2026
- Category
- Finance
- Pricing
- Free nexus monitoring plan; Starter from $75 per filing or registration; Premium custom
- Implementation
- 1-2 weeks
- Adoption risk
- Medium
- Integrates with
- Shopify, Stripe, QuickBooks, NetSuite, Amazon, Chargebee
What Kintsugi does
Sales tax obligations across U.S. states are easy to miss, especially when your business starts selling into new territories. Kintsugi watches your transaction data in real time and alerts you when your sales cross the thresholds that create a tax obligation in a new state — before you're late and facing penalties.
Once you're registered, Kintsugi handles the ongoing work: calculating the right tax for each product, filing returns, remitting payments, and reconciling records across states. It also flags transactions that carry higher audit risk, so your team knows where to pay attention rather than reviewing everything manually.
The platform connects directly to solutions many businesses already use — including Shopify, Stripe, QuickBooks, NetSuite, Amazon, and Chargebee — through no-code integrations. Most teams are up and running within one to two weeks, and Kintsugi is SOC 2 Type II certified, meaning it meets a recognized standard for data security.
Key capabilities
Ongoing Nexus Monitoring
Kintsugi tracks your sales across states and tells you when you've crossed an economic nexus threshold, so you register on time rather than after the fact. This monitoring is available at no cost.
Automated Filing and Remittance
Filing, payment, and reconciliation are handled by the platform rather than your team. Returns go out on schedule across whichever states you're registered in.
Audit Risk Scoring
The platform reviews your transactions and surfaces those that carry higher audit risk, giving your finance team a focused list rather than a full manual review.
Product Tax Classification
Kintsugi automatically classifies products and validates addresses so the correct tax rate is applied to each sale, reducing errors from manual lookups.
Exemption Management
Exemption certificates and the logic that goes with them are managed inside the platform, keeping that process off your team's plate.
Broad Platform Integrations
No-code connections to Shopify, Stripe, QuickBooks, NetSuite, Amazon, and Chargebee mean transactions sync in real time without custom development work.
Best for
- Small and mid-sized businesses selling across multiple U.S. states that are worried about missing nexus thresholds or filing deadlines
- E-commerce and SaaS companies already running on Shopify, Stripe, Amazon, or similar platforms who want compliance to run in the background
- Finance teams spending significant manual time on state-by-state tax filings and reconciliation each month
- Growing businesses expanding into new states who want to register and collect correctly from day one rather than catching up later
- Companies that have had a close call with a state audit and want better visibility into where their exposure actually sits
Worth knowing
- The free plan covers nexus monitoring only; each filing or registration costs $75, and the Premium plan is custom-priced with volume discounts. Model your expected filing volume before assuming the free tier is sufficient.
- Kintsugi is built around U.S. sales tax. If your primary compliance challenge is VAT or international indirect tax, you'll want to evaluate solutions purpose-built for those frameworks.
- Connecting your billing, e-commerce, and ERP systems and verifying that transaction data flows correctly takes some setup time. Budget one to two weeks for a smooth rollout and expect some internal coordination to get it right.
- The platform does not currently appear to support HR or payroll integrations for physical-presence nexus tracking in the same depth as its billing integrations — confirm with Kintsugi directly if that's a requirement for your business.
- If you're a larger enterprise with highly complex tax scenarios across dozens of states and international jurisdictions, compare Kintsugi against more established enterprise platforms before committing.
Related solutions
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