Quaderno (Tax Compliance)
What You Get
Inflow includes a built-in integration with Quaderno, a tax compliance platform. When connected, Quaderno handles:
- Automatic VAT / sales tax calculation at checkout — based on your customer's location, product type, and B2B status
- Tax receipts and invoices generated automatically for every payment
- Tax reporting — all transactions are recorded in your Quaderno account for filing
This means you don't need to manually calculate tax rates or generate invoices. Inflow + Quaderno handles it end-to-end.
How It Works for Your Customers
When Quaderno is connected:
- A customer reaches your checkout (via payment link, subscription link, or API).
- Inflow asks Quaderno for the correct tax rate based on the customer's billing country, business status, and product type.
- The tax is displayed on the checkout page (either added on top or included in the price, depending on your pricing mode).
- After payment, a receipt is automatically created in Quaderno with all transaction details.
Without Quaderno, Inflow uses its own built-in tax rates. Quaderno provides more accurate, regularly updated rates — especially useful for SaaS, digital goods, and cross-border sales.
How to Connect
- Go to Settings > Integrations in your Inflow Dashboard.
- Find Quaderno and click Connect.
- Authorize Inflow on the Quaderno page.
- Done — tax calculation and invoicing are now automatic.
What Happens After Connection
| What | Before Quaderno | After Quaderno |
|---|---|---|
| Tax rates | Inflow built-in rates | Quaderno's tax engine (more accurate, updated regularly) |
| Receipts / invoices | Not generated | Auto-generated in your Quaderno account |
| Tax reporting | Manual | Available in Quaderno dashboard |
| B2B reverse charge | Not supported | Handled by Quaderno |
Pricing Modes
Inflow supports two pricing modes for tax calculation — these work with or without Quaderno:
- TAX_EXCLUSIVE (default) — Tax is added on top of the product price
- TAX_INCLUSIVE — Tax is included in the displayed price
See Tax and Pricing Modes for details and API examples.
Disconnecting
- Go to Settings > Integrations.
- Click Disconnect under Quaderno.
After disconnecting, Inflow reverts to its built-in tax calculation. Existing invoices in Quaderno are not affected.
Important Notes
- Quaderno is optional — Inflow works without it.
- Connection is done from the Dashboard (OAuth flow).
- OAuth tokens refresh automatically. If a refresh fails, reconnect from Settings.
- Contact [email protected] for help.
Updated about 17 hours ago