Step-by-step help for Kintsugi sales tax software — connect integrations, track nexus, register, and file returns. Search guides, FAQs, and troubleshooting.

Kintsugi Help Center | Sales Tax Software Support & Guides

Your First Steps to Stress-Free Tax Filing

Getting Started

State Registration & Tax Filing to Ensure Business Compliance

Registrations & Filings

Your guide to integrating third-party services with step-by-step instructions 

Integrations

Manage your Kintsugi subscription, billing details, payment methods, invoices, and learn about pricing plans, refunds, and account changes.

Subscription & Billing

Frequently Asked Questions

Explore our collection of helpful guides, contact information, and tools to assist you with tax-related questions and processes.

Resources

Troubleshooting

Collection of Kintsugi's product & marketing contents

Blogs

Managing Stripe Data Connection to Kintsugi

Stripe

Connect Stripe to Kintsugi to automate sales tax compliance. Follow this guide to install the app, sync products, customers, and invoices, and review your data.

Stripe Read-Only Integration Guide

Set up the Stripe tax engine integration with Kintsugi: install the app, choose test or live mode, review products and addresses, and enable tax collection.

Stripe Tax Engine Integration Guide

Learn the Stripe integration requirement for Kintsugi: use Stripe Invoicing rather than Stripe Payments, with links to Stripe's invoicing setup docs.

Stripe Requirements

See how sales tax appears on Stripe invoices with Kintsugi: a distinct tax line item shows the rate and amount charged for transparent, accurate accounting.

How Sales Tax Appears on Stripe Invoices

Learn how to handle ad hoc (inline) products in the Stripe integration: map one-off charges to one predefined product to avoid tax classification issues.

Using Ad Hoc Products with Stripe Integration

Learn how to add a GST/HST or QST number to a customer profile in Stripe so Canadian sales tax calculates correctly, including Quebec QST for accurate tax.

How to Add a GST/HST or QST Number for Canada in Stripe

Kintsugi supports sales tax calculation for Stripe Invoicing, not Stripe Payments, since invoices include shipping, product, and quantity data tax needs.

Stripe Invoicing vs. Stripe Payments

Set up Stripe subscriptions so Kintsugi calculates sales tax on the first invoice: disable Stripe Tax and categorize and approve recurring products first.

Ensuring Accurate Sales Tax for Initial Subscriptions in Stripe

Learn why Stripe invoice counts differ from Kintsugi transactions, usually due to missing addresses, where to find the full count, and how to reconcile them.

Why Stripe Invoice Counts Differ from Kintsugi Transactions

Technical reference for how Kintsugi calculates and writes tax to Stripe invoices via its own tax engine, including webhook events and activation conditions.

How Kintsugi Calculates Tax on Stripe Invoices: Technical Reference

On a tax-engine Stripe integration, Kintsugi starts collecting tax once a registration is actively processing. See how each status maps to tax collection.

When Does Tax Collection Begin on a Tax Engine Stripe Integration?

Reconnect your Stripe integration when a token expires or the app is uninstalled. See common causes, when to reinstall instead of reconnect, and FAQs.

How to Reconnect Your Stripe Integration

Kintsugi is a Stripe app, not a Stripe Tax provider