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Kintsugi

Sales Tax Filing Software

Sales tax filing software that helps you file in every state, every time

Kintsugi files automatically in every state where you have nexus. Automatic preparation, submission, and remittance. Every deadline met, every format correct, every payment confirmed.

Sales by Year chart with total sales, transactions, liability, and tax remitted summary cards

Trusted by 8,000+ businesses

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Join 8,000+ businesses who’ve already made the switch

  • “I’m glad I [made] the switch. Not only am I saving money right now, I’m also getting better service in terms of accuracy. It’s been a win-win for us to transition.”

    38%

    reduction in compliance costs

    Plufl
  • “We tried using popular platforms, but they just added frustration. We needed a solution that worked with us.”

    20 hours

    extra time every month reclaimed

    Superkeen
  • “Having Kintsugi in our corner gives us the confidence to think bigger. It’s empowering to feel this level of support as we set our sights on expanding even further.”

    $60,000

    in penalties avoided

    Blossom Lux

Built for how ecommerce actually works

All your channels connected

Shopify, Amazon, Etsy, your custom store; all channels flow into one unified tax system. Real-time calculations for every SKU, every variant, every jurisdiction.

Real-time nexus monitoring

See exactly where you have exposure before states come knocking. Get alerts when you’re approaching thresholds. Register when you’re ready, not when you’re panicked.

Cross-border ready

Selling internationally? Same simple experience for VAT, GST, and sales tax. 100+ countries supported with automatic currency conversion and local compliance.

Built for your catalog

Whether you sell 10 SKUs or 10,000, physical goods or digital downloads, or wholesale; we handle the nuances. Product taxability rules applied automatically.

Built for your catalog

Whether you sell 10 SKUs or 10,000, physical goods or digital downloads, or wholesale; we handle the nuances. Product taxability rules applied automatically.

Spend less time and money on sales tax with Kintsugi

8,000+

businesses automated

$15.1B

transactions processed

<2 hours

average support response

Beyond calculations and filing

  • Amendments without the headache

    Need to correct last quarter’s return? Had a bunch of refunds? We file amendments professionally without disrupting your regular filing schedule.

  • Back tax resolution & VDAs

    Past exposure doesn’t have to haunt you. We handle VDAs and back-filing professionally, resolving liabilities on favorable terms.

  • Back tax resolution & VDAs

    Past exposure doesn’t have to haunt you. We handle VDAs and back-filing professionally, resolving liabilities on favorable terms.

  • Built for audits

    Every return saved. Every calculation documented. Every payment tracked. When auditors come knocking, you’re ready with everything.

  • Detailed reporting capabilities

    Comprehensive reports for client reviews and audit support. Transaction details, filing summaries, nexus exposure; all exportable and professional.

Find out which states you should be filing in.

No credit card required.

For businesses ready to stop managing deadlines

See problems before they’re problems

Upcoming deadlines visible months out. Automatic alerts before due dates. Fix issues before they become penalties.

Predictable pricing

$75 per filing or registration. No per-transaction fees that punish client growth.

Keep your current setup

Already using QuickBooks? Shopify? Stripe? Perfect. Kintsugi connects to what you have.

Expert support included

Our support team has filed in every state. They know the quirks, the edge cases, the random requirements.

Get free help filing sales tax with Kintsugi

FAQs

Still have questions?

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