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Canada GST Verification API

Simplify Canadian GST checks and tax compliance

Validate Goods and Services Tax numbers for Canadian businesses in real-time. Ensure tax compliance during invoice processing and B2B verification while preventing fraud through accurate GST number validation on any transaction date.

Simplify Canadian GST checks and tax compliance
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More Fraud Detection

13

Federal States Coverage

160M+

Global Businesses Verified

Trusted by industry leaders

Finally, GST Verification you can count on

Handle every tax compliance scenario with ease, knowing your GST verification is always accurate. Reduce manual work, eliminate errors, and grow your business

Expand in Canada without drowning in tax compliance

Enter the Canadian market confidently. Signzy tracks every local regulation and pushes updates, keeping your onboarding, payments, and AML workflows perpetually compliant — no spreadsheet wrangling or last-minute code scrambles required.

Automate

Keep deals moving with foolproof GST checks

Build genuine business relations on GST and KYB data you can trust. Signzy’s business verification is built on reliable databases to give you unmatched coverage and accuracy in Canada.

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Make confident decisions with the right business data

Instantly confirm a company’s GST/HST registration status, business type, and effective dates — so your risk and finance teams can approve legitimate Canadian businesses and flag questionable ones before a single dollar moves.

Comply
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Get total GST Clarity

The GST verification solution that grows with your business needs and adapts to your workflow

Invoice & Tax Compliance

Auto-validate every GST/HST number while processing invoices, eliminating manual look-ups and preventing input-tax-credit errors at audit time.

Fraud Prevention

Flag shell or deregistered entities in real time before money or goods change hands.

B2B Partner Verification

Give procurement and finance teams instant assurance that new or existing suppliers, distributors, and resellers hold an active GST account, strengthening due-diligence workflows.

Marketplace / Seller Vetting

Marketplaces and payment facilitators can verify every merchant’s GST credentials at onboarding, keeping the platform clean and minimizing regulatory exposure.

Regulatory Reporting & Audit Readiness

Continuous, API-driven monitoring ensures your customer database stays accurate, making internal audits faster and less disruptive.
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For all your verification needs in Canada

Weave a seamless story of trust with end-to-end KYC, KYB & AML compliance

Canada Business Verification

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Automate your approach to verify UBOs, documents, and bank accounts effectively, preventing fraud while being compliant with global and Canadian KYB requirements.

EIN Verification

Streamline your KYB process and onboard legally incorporated businesses in the US through effective Employer Identification Number checks.

One Touch KYC

Onboard users with confidence with Signzy’s foolproof KYC suite. ID checks, biometric verification, AML monitoring, all work together to build dynamic user risk profiles.

AML + Transaction Monitoring

Stay one step ahead of fraud and money laundering — mitigate risk and screen users against Politically Exposed Persons (PEP), sanctions lists, adverse media, and more.

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Developer Doc

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Ship it before your coffee cools.

Integrate the API during lunch hour, customize based on your needs, and go live within 2-4 weeks!

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FAQ

What is the difference between GST, HST, and PST in Canada??

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How is GST verification different from general business verification in Canada?

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What are the main challenges of GST verification in Canada?

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Why do I need to verify GST numbers for my business?

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What happens if a GST number is invalid or inactive?

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What if I run into an error? Is there documentation?

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