From your Stripe dashboard, click on Tax in the left-hand pane (or click on this link).
Click on the Start button, and let Stripe guide you.
Activate automatic tax collection
To activate automatic tax collection, go to your dashboard, then Settings > Tax (or click on this link).
Check the information and settings in the different sections (business address, preset product tax code, etc.), and check that the Use automatic tax calculation option is activated.
Add a registration
Click on Tax in the left-hand side menu, then on the Registrations tab, or click on this link.
Click on the + Add Registration button.