The Tax Collected report shows how much sales tax you have taken in, broken out by tax rate, so you have the numbers you need to file with your state or county.
Go to Reports > Accounting > Tax Collected.
Read this part before you file. This report counts tax as the money arrives, not when you write the invoice. If you invoice a customer on the 28th and they pay on the 3rd of the next month, that tax lands in the second month, not the first. Tax on a sale put on account counts when the customer pays it off.
That matters if you are coming from another system. TSS totaled tax on posted invoices regardless of whether the money had come in, so the two will not agree, and neither is wrong. They are answering different questions. If your state has you filing on what you invoiced rather than what you collected, use your sales reports (Daily Sales counts by invoice date) and not this one. If you file on what you collected, this report is the one you want.
Pick a date range that matches your filing period. The report sums tax per rate per day, so if you have multiple tax jurisdictions configured under Settings > Invoicing, each appears on its own line. The table is a day-by-rate summary rather than a list of individual invoices.
Voided invoices are excluded. Refunds are subtracted, so tax you gave back reduces the total in the period you refunded it.
Use the totals at the bottom for filing, and Export so you have a CSV record alongside your return.
Tax rates are pulled from Settings > Invoicing. If a number looks wrong, check that the right rate was selected on the source invoices.