How do sales tax fit into the picture when it comes to sales by my store?

Sales tax is a state thing. AMZ collects and pays the sales tax for you, but depending on the state where your business is set, up you may still have to report sales each month or quarter. Just report, not pay. Wealth Assistant generates a state by state breakdown in our monthly reports, but how you report your sales to your state of business registration is something you'll need to lean on your CPA or tax advisor for.