I have a Casio hr-150tm. After adding merchandise then tax how can I subtract to give money back. Example. 25+25=50 tax+. Then subtract that total from $100 to give money back

SOURCE: Set Tax rate on a Casio HR-100TM

Press the CA button twice. Then push and hold down the %/set key until the 0 dissappearsd and reappears. Then type in your tax rate and the percent key (eg: 8.25%) and then press the TAX+ key. It should save the new tax rate.

SOURCE: casio calculator HR 100 Tm

Printing models (except HR-8TE):
1. Have calculator in “print” mode
2. Press [CA]
3. Hold [SET/%] key for about 5 seconds
4. Input the tax rate
5. Press [TAX+]
6. Press [SET/%]

SOURCE: i just bought a casio hr-100 tm and the tax is set

Turn it off and on, then hold down %(set) until the zero comes back up (or if ur on print mode it will print something) then enter 7.3 and push tax+.

SOURCE: Need Operation data to operate all functions of

how should i use if i want to use of limit in the calculator casio fx-9750G||

SOURCE: How change percentage (tax) rate on Casio-1100TV?

FINALLY figured out how to change the tax rate! Press AC. Press and hold the Rate Set (%) button UNTIL THE CURRENT TAX RATE IS DISPLAYED. Enter the new rate you want (such as 7.5). Press the Rate Set (%) button again.