Hi there,
Welcome to the Community. QuickBooks offers a flexible tax module that simplifies the way you manage your taxes. I'll be happy to share info and steer you in the right direction.
Once you've set up your taxes on your account, you can begin to use the tax codes so QuickBooks can keep record of your taxes. I encourage you to check out this article here that shows you how to set up sales tax. The program also makes it easy for you to file your sales tax. Here's a helpful article that shows you how to: File sales tax in QuickBooks Online.
You're welcome to ask other questions. I'm here to steer you in the right direction.