Guides
Calculate Tax Before Checkout
Use the Tax Quote API to show tax breakdowns before payment.
Calculate Tax Before Checkout
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Bag calculates VAT, GST, and sales tax automatically using Numeral. You can request a tax quote before creating a checkout session to show your customers a breakdown of subtotal, tax, and total.
The tax quote endpoint is POST /api/tax/quote. See the API Reference for full details, or the Build a Custom Checkout guide for a working example.