Sales tax calculations has been the most requested feature for our margins and markup calculator and finally its here in version 2.2. To use first you must enter your tax rate in the settings screen. You will also see a switch here which is used to default the tax calculation on or off.
Once set up you can easily toggle the sales tax on or off in the calculators by double tapping the ‘Sell’ field. If the tax is included in the calculation the rate and amount will be shown on the display.