Best way to handle sales tax with purchases

**Sales Tax ** I would love to understand this and find a process I can follow to be successful. I'm pretty new to sales tax world. Has there been a successful process that anybody else follows and can share? To calculate sales tax and do this on a yearly basis? If you're collecting any sales tax through your app with Apple or stripe etc.

For not only the US, but if your product is also in different countries. Again I don't really know this sales tax stuff and I'm trying to learn it as I go.

Best way to handle sales tax with purchases
 
 
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