You can create price levels in QuickBooks and assign them to individual sales transactions.
Fill in the field next to Price Level Name, and then click the arrow next to Price Level Type. Select Fixed %. Select decrease from the drop-down list on the next line and enter your percentage number. Round up to the nearest is an optional field, Click OK when you’re done. The next time you create a sales transaction, your new price level will be available as an option when you open the drop-down list in the Rate column.
When you need to edit or delete a price level, go to Lists | Price Level List again and click the arrow next to Price Level in the lower left corner. You have several options here. You can, for example, make a price level inactive so it doesn’t appear on the list. The field next to Price Level is labeled Reports. Click on the arrow to see what’s available there.
Customers and Jobs
You can also apply a price level you’ve created to a specific customer or job, perhaps to reward a customer for frequent purchases. When you do so, that rate will appear every time you enter a sales transaction for the customer or job you selected.
Open the Customers menu and select Customer Center. Double click on a customer or job’s name to open the record. Click on the Payment Settings tab. Click the arrow in the field next to Price Level and select the right one, then click OK.