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Kintsugi
Compliance Automation | Real-Time Tax Engine

BigCommerce Sales Tax Automation

Kintsugi calculates sales tax at checkout on your BigCommerce store in real time, tracks nexus in every state, and files and remits your returns.

Free exposure monitoring · Filing from $75 · No per-transaction fees

Rated 4.6/5 on G2 (55 reviews) · 7,000+ customers

Kintsugi product UI showing exposure map, support chat, and integrations
KintsugiBigCommerce logo

Trusted by 7,000+ businesses

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Kintsugi calculates, monitors, and files your BigCommerce sales tax

  • Calculate

    Tax at every BigCommerce checkout

    Kintsugi's tax engine calculates sales tax at checkout in real time, with no manual rate updates.

  • MonitorFree

    Nexus in every state

    Get alerted the moment your BigCommerce sales cross a state's economic nexus threshold, before it becomes back tax.

  • File & remit

    Returns filed for you

    Kintsugi registers you where you owe, files every return, and remits on schedule, from $75 per filing or registration.

How BigCommerce connects to Kintsugi

Kintsugi reads your BigCommerce orders, customers, and tax zones to calculate tax at checkout, monitor exposure, and file every return on schedule.

Kintsugi integrations list with connect buttons and exposure status
  1. Connect & sync

    Install the Kintsugi app from BigCommerce. Customers, products, orders, and refunds sync automatically, along with the customer groups and tax zones you already use for exemptions.

  2. Calculate in real time

    Kintsugi's tax engine calculates sales tax at checkout on your BigCommerce storefront, so the amount you collect is right the first time, with no manual rate updates.

  3. Register, file, and remit

    Kintsugi registers you where you owe, files every return, and remits on schedule everywhere BigCommerce sells for you, with audit-ready reporting.

What Kintsugi syncs from BigCommerce

Data synced from BigCommerce and how Kintsugi uses it
SyncedWhat Kintsugi does with it
Orders and transactionsTracked against every state's economic nexus threshold and used to prepare your returns.
ProductsClassified for taxability by jurisdiction.
CustomersMatched to the location each sale is taxed in.
RefundsApplied at the transaction level so filings reflect what you actually collected.
Customer groups and tax zonesCarried through so exempt customers aren't taxed, with no second setup in Kintsugi.

Connect BigCommerce your way

Read-only connection

Kintsugi reads your BigCommerce data to calculate what you owe, monitor exposure, register you where you owe, and file and remit your returns.

Tax engine

Kintsugi calculates sales tax at checkout on your BigCommerce store in real time, from the same data it uses to file.

Who uses Kintsugi with BigCommerce

  • Tax-exempt and B2B buyers

    Exemptions you set up in BigCommerce customer groups and tax zones carry through automatically.

  • Selling into new states

    Get told the moment your BigCommerce sales cross a state's economic nexus threshold, before it becomes back tax.

  • Switching from Avalara or TaxJar

    Run Kintsugi alongside your current provider during evaluation, then cut over on your timeline.

  • Selling internationally

    Track VAT and GST exposure across 100+ countries from the same BigCommerce orders.

How BigCommerce sales tax works

What BigCommerce does

BigCommerce gives every store basic tax, where you define tax rates for each regional zone yourself. For automatic calculation in the cart and at checkout, it integrates with third-party tax providers.

Where it stops

BigCommerce's docs assume you already know your tax requirements, and its support team isn't qualified to give tax advice. Where you have nexus is managed in your tax provider's account, and reporting and returns come from that provider.

What Kintsugi adds

Kintsugi connects as that provider: its tax engine calculates sales tax at checkout in real time, and the same BigCommerce orders drive nexus monitoring, registration, filing, and remittance.

Sources: BigCommerce order taxes, BigCommerce automatic tax setup

Why Customers Love Us

  • Jared Stark

    Founder of Incendico Fire Alarm Store

    The setup was incredibly seamless and much faster than I expected, with clear guidance throughout the process. What really stands out is their support since it is easy to get in touch with someone quickly and the team is knowledgeable and actually helpful when you have questions.
  • April Walford

    Operations Manager at JMXi

    They corrected errors in our past returns, enrolled us quickly and efficiently, filed everything on time, and thoroughly researched any questions or concerns we had. Their customer service is excellent.
  • Mo Hartman

    Staff Accountant at Searchspring

    Having the visibility on the dashboard has been extremely helpful and the ease of being able to approve. It is very user-friendly and I can see everything I need in one place.

BigCommerce sales tax FAQ

Ready to automate BigCommerce sales tax?