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

FAQs

• Is Kintsugi sales tax filing software or a filing service?

  Both. The software prepares, submits, and remits your returns automatically in every state where you have nexus, and our support team, who have filed in every state, handles the quirks and edge cases with you.

• Does QuickBooks handle sales tax filing?

  Kintsugi connects to QuickBooks, so you keep your current setup while Kintsugi prepares, submits, and remits your returns in every state where you have nexus.

• What's the best software for small business tax filing?

  Look for software that files automatically in every state where you have nexus, keeps pricing predictable as you grow, and connects to the tools you already use. Kintsugi handles preparation, submission, and remittance for US$75 (approx. £57) per filing or registration, with no per-transaction fees.

• What mistakes do businesses make with sales tax filing?

  The most common are missing deadlines, not knowing which states they have nexus in until a state reaches out, and leaving refunds or errors uncorrected. Kintsugi shows upcoming deadlines months out, alerts you before due dates, monitors nexus in real time, and files amendments when a return needs correcting.

• How do businesses actually handle sales tax?

  Many start by tracking and filing state by state on their own. As they expand into more states, most move to software that monitors nexus, calculates tax on every transaction, and files returns automatically. Kintsugi does all three from one system connected to your sales channels.

• How does Kintsugi’s automation work specifically?

  Kintsugi connects to your sales channels and tools, such as Shopify, Amazon, Stripe, and QuickBooks, calculates tax on every transaction, and monitors where you have nexus. It then files automatically in every state where you're registered: preparing the return, submitting it in the correct format, and remitting payment. Every return, calculation, and payment is saved for audits.

• What about amended returns?

  Need to correct last quarter’s return or account for a batch of refunds? Kintsugi files amendments without disrupting your regular filing schedule.

• Can you handle home rule states?

  Yes. Home-rule jurisdictions, such as Colorado's cities that set their own rules on top of the state's, are managed automatically so the correct local rules apply.