This is a two step process you will want to follow.
- Click on Setups/Accounting and Payroll/Sales Tax Rates
- Highlight the Tax Rate you need to change, and click on Edit
- Make your changes and click on Ok to save them
- That will take care of all future RO's & Part invoices you start
Next you need to take care of any open/unpaid ROs and Part Invoices.
- Open each RO and click on the Miscellaneous blue link on the left
- In the upper left corner of that window, below Service Writer (Service Counter) Sales Person (Part Counter), is Tax Code. Click on Select
- Select the tax code, then click Ok
- This will recalculate the sales tax for that RO or Part Invoice
- Do this for each open Repair Order and Part invoice.