Stripe automatically reports and collects taxes for your paid newsletter. You can learn more about this on our Stripe setup page, or by reading Stripe's documentation.
You may need to register your paid newsletter with your local tax authority. Stripe has a tool to help you determine if you need to do this. You can use this tool in the "Monitoring" tab of your tax "Overview" page. To learn more, read Stripe's tax monitoring documentation.
If Stripe advises you to register with your local tax authority, Stripe's Registration guide explains the process of adding, editing, and checking the status of your registration.