Tax compliance
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How Kintsugi and Numeral compare on price, filing, country coverage, e-invoicing and integrations, built from each vendor’s own pages. Pick any two tools to compare them.
Showing Kintsugi compared with Numeral.
Facts checked on against each vendor’s public pages.
Pay-per-filing sales tax
Kintsugi monitors nexus for free and, on its Starter plan, charges per registration or filing in the US and Canada. Custom monthly plans add EU, UK and other VAT and GST, real-time calculation and the API.
Choose Kintsugi if you’re one of these:
Pay-per-filing sales tax
Numeral monitors nexus for free, then registers and files US sales tax for a fee per registration and per return. VAT and GST in 90+ countries and the tax engine API are on a custom Enterprise plan.
Choose Numeral if you’re one of these:
Kintsugi is free to start and charges per filing (Free monitoring; Starter is $75 per registration or filing). Kintsugi charges for each registration and return, so the bill grows with every state and filing. Numeral is free to start and charges per filing (Free monitoring; $75 per return and $150 per registration). Numeral charges for each registration and return, so the bill grows with every state and filing. Having one US state’s returns filed costs $75 per filing with Kintsugi. Having one US state’s returns filed costs $75 per filing with Numeral.
Every row comes from the vendor’s own pricing page, help centre or docs. “Not stated” means the vendor doesn’t say publicly, not that the feature is missing.
| Criterion | Kintsugi | Numeral |
|---|---|---|
| Overview | ||
| Type of tool | Pay-per-filing sales taxFree nexus monitoring, then pay per filing | Pay-per-filing sales taxPay-per-filing sales tax with free monitoring |
| Built for | ||
| Countries covered | 100+ countriesMonitoring on every plan; filing on custom plans | 90+ countriesOn the Enterprise plan |
| Head office | United States | United States |
| Founded | 2022Independent, venture-backed (Vertex is an investor) | 2023Independent, venture-backed |
| Pricing | ||
| Starting price | $0 a monthFree monitoring; Starter is $75 per registration or filing | $0 a monthFree monitoring; $75 per return and $150 per registration |
| Pricing model | Fee per filing | Fee per filing |
| One price covers every state and country | NoPriced per filing | NoPriced per filing |
| Free plan | Yes | Yes |
| Free trial | Free plan instead | No |
| Month to month | Yes | Yes |
| Prices published | Partial | Partial |
| Filing: one US state | $75 per filingStarter plan, no monthly fee | $75 per filingProfessional plan, no monthly fee |
| Filing: one country | Quote onlyCustom plans only | Quote onlyEnterprise plan only |
| Registration: one US state | $75 one-offUS and Canada, on Starter | $150 one-off |
| Registration: one country | Custom plans only | Enterprise plan only |
| Tax coverage | ||
| US sales tax | Yes | Yes |
| EU VAT | Yes*Custom plans | Yes*Enterprise plan |
| EU One Stop Shop (OSS) | Yes*Custom plans | Yes*Enterprise plan |
| EU Import One Stop Shop (IOSS) | Not stated | Not stated |
| UK VAT | Yes*Custom plans | Yes*Enterprise plan |
| Canada GST/HST | YesGST/HST, PST and QST | Yes*Enterprise plan |
| Australia and New Zealand GST | Yes*Custom plans | Yes*Enterprise plan |
| Rest of the world | Yes*Custom plans | Yes*Enterprise plan |
| Compliance features | ||
| Nexus and threshold monitoring | YesFree plan | YesFree plan |
| Real-time tax calculation | Yes*Scale plan and up | Yes*Enterprise plan |
| Tax registration | YesPaid per registration on Starter | YesPaid per registration |
| Return filing and payment | YesPaid per filing on Starter | YesPaid per return, with an on-time guarantee |
| Invoices and credit notes | Not stated | Not stated |
| E-invoicing | Not stated | Not stated |
| VAT number validation | Yes | Yes*Enterprise plan |
| Exemption certificates | Yes | YesFirst 50 certificates free |
| Marketplace facilitator sales | Not stated | Not stated |
| Developers and platforms | ||
| Public API | Yes*Premium plan | Yes*Enterprise plan |
| MCP server for AI assistants | YesMCP server | Not stated |
| White-label for platforms | Not stated | Not stated |
| Integrations | ||
| Shopify | Yes | Yes |
| WooCommerce | Yes | Yes |
| BigCommerce | Yes | Yes |
| Adobe Commerce (Magento) | Not stated | Not stated |
| Amazon | Yes | Yes |
| Etsy | Not stated | Yes |
| Stripe | Yes | Yes |
| PayPal | Not stated | Not stated |
| Chargebee | Yes | Yes |
| QuickBooks | Yes | Yes |
| Xero | Not stated | Yes |
| NetSuite | Yes | Yes |
| Integration library | Integrations included at no extra cost | 40+ billing, accounting, ERP and commerce integrations |
| Setup and support | ||
| Setup | Guided onboardingFree onboarding | Guided onboardingConcierge onboarding |
| Support channels | email, chat and phoneAlso Slack | emailConcierge support from tax experts |
Yes*: offered as an add-on or on a higher plan; the note under it says how. Via partners: done by a third party. Partial: limited, see the note. Not stated: the vendor doesn’t say publicly.
Answers built from the same facts as the table above.
Kintsugi is free to start and charges per filing (Free monitoring; Starter is $75 per registration or filing). Kintsugi charges for each registration and return, so the bill grows with every state and filing. Numeral is free to start and charges per filing (Free monitoring; $75 per return and $150 per registration). Numeral charges for each registration and return, so the bill grows with every state and filing. Having one US state’s returns filed costs $75 per filing with Kintsugi. Having one US state’s returns filed costs $75 per filing with Numeral.
Kintsugi offers return filing (Paid per filing on Starter). Numeral offers return filing (Paid per return, with an on-time guarantee). Kintsugi offers tax registration (Paid per registration on Starter). Numeral offers tax registration (Paid per registration).
Kintsugi calculates tax in 100+ countries. Numeral calculates tax in 90+ countries. Kintsugi offers EU VAT as an add-on (Custom plans). Numeral offers EU VAT as an add-on (Enterprise plan).
Kintsugi doesn’t say publicly whether it offers e-invoicing. Numeral doesn’t say publicly whether it offers e-invoicing.
Both connect to Shopify, WooCommerce, BigCommerce, Amazon, Stripe, Chargebee, QuickBooks and NetSuite. Only Numeral lists Etsy and Xero.
Kintsugi suits small US sellers filing a few returns a year and Shopify or Stripe merchants who want to start with free monitoring. Numeral suits US ecommerce sellers on Shopify, Amazon or WooCommerce and startups that want a low fixed cost.
Every fact comes from the vendor’s own pages, checked November 6, 2026. Where a vendor doesn’t say, we write “Not stated”. GoodVat publishes this comparison and is one of the tools in it. Spotted an error? Email hello@goodvat.com.
Independently reviewed and signed off by accountants in 4 jurisdictions on November 6, 2026, to keep it objective.
GoodVat registers you, calculates tax at checkout, sends invoices and files your returns, with filing prices published per US state and per country. Tell us where you sell and we’ll map what you need.
