Stripe offers two ways to calculate tax on your Checkout Sessions: Stripe Tax and Tax Rates.
Stripe Tax—a paid product that automatically calculates the tax on your transactions without the need to define the rates and rules. Fees only apply after you’ve added at least one location where you’re registered to calculate and remit tax.
Tax Rates—a free feature that allows you to define any number of tax rates for invoices, subscriptions, and one-time payments that use Checkout. Stripe won’t create or maintain any tax rates on your behalf.