> Sales tax is different in every country, and in the US it is even different per state. I use Paddle for https://www.checkbot.io/ https://www.checkbot.io/ and

> Sales tax is different in every country, and in the US it is even different per state. I use Paddle for https://www.checkbot.io/ https://www.checkbot.io/ and they handle all country specific tax for you. They take 5% + $0.50 per transaction which is relatively high but you need to weigh up your priorities. Similarly, Fastspring and Gumroad are worth looking at.