Give your sellers automatic tax calculations, invoicing, and threshold monitoring without Quaderno ever appearing in your product. As a white label tax software, Connect's API handles the tax logic while your brand gets all the credit.
Tax-sensitive sellers choose the platform that handles compliance for them. Without it, your retention suffers and your competitors benefit.
Quaderno Connect embeds four tax compliance capabilities into your platform. Your sellers get each one under your brand.
Quaderno calculates the correct VAT, GST, or sales tax on every sale your sellers make, based on the customer's location and product type, in real time across 150+ countries.
Sellers receive real-time alerts when they approach US economic nexus or international VAT and GST registration thresholds, so they can register before they're legally required to collect tax.
Automatic PDF and HTML invoices go out the moment a sale completes, in the buyer's language and currency. Where e-invoicing mandates apply, Quaderno switches to structured formats automatically.
Sellers can download clear, jurisdiction-specific tax reports in one click to file returns themselves or share with their accountant. Reports update daily and cover all connected sales channels.
The best thing about Quaderno is that it gets our data straight from the payment platforms. Hence, we have 90% of the work already done.
Quaderno Connect is a white-label sales tax and VAT API for platforms and marketplaces. It embeds Quaderno's tax engine into your product so your sellers get automatic tax calculations, invoicing, threshold monitoring, and filing reports, all under your brand, with no Quaderno branding visible to them.
Connect exposes Quaderno's full sales tax, VAT, and GST compliance stack: real-time tax calculations at checkout (VAT, GST, and sales tax across 150+ countries), economic nexus and VAT threshold monitoring with registration alerts, tax-compliant PDF and structured e-invoicing, and jurisdiction-specific tax reports for filing returns. You choose which services to surface for your sellers.
White-label tax compliance means embedding a tax engine into your platform under your own brand, so your sellers never see or interact with the underlying provider. With Quaderno Connect, you integrate via API, choose which tax features to expose to your sellers (calculations, threshold monitoring, invoicing, filing reports, or all four), and your sellers experience everything through your product. Quaderno runs the tax logic and keeps compliance rules up to date; your brand gets all the credit.
No. Quaderno Connect is a fully white-label solution. Your sellers interact with your product and see your brand throughout. Quaderno runs entirely in the background, handling the tax logic, data, and compliance rules.
Yes. Connect embeds sales tax, VAT, and GST compliance across 150+ countries into your platform through a single REST API. Each seller gets their own compliance dashboard, with calculations at checkout, threshold alerts, invoicing, and filing reports, all without Quaderno branding.
Most platforms are live in a few hours. Start with test API keys in our free sandbox, integrate via the REST API, and follow our step-by-step developer guide. The Quaderno Developer Hub includes a complete OpenAPI spec, code samples, and a free testing environment.
Yes, and it's free with no time limit. Generate test API keys from your dashboard and simulate any checkout or billing scenario before going live. The API documentation covers every endpoint with request and response schemas.
Connect is priced in two parts: a flat $5 per active connected account per month, plus a Quaderno plan that covers the aggregated transactions and API calls across all your sellers. The minimum plan for Connect is Business ($99/month). Get in touch to work out the right structure for your platform's scale.
Quaderno Connect's API makes your sellers tax-compliant from their first sale, with no development overhead and no Quaderno branding. Your platform, your brand, our tax engine.