On printing calculators (e.g., Casio HR-100TM), the new rate may print on the paper roll when set.

If your calculator has a button labeled or TAX- , you are in luck. If it does not have these buttons, it cannot be programmed. how to set tax rate in casio calculator

By mastering these few keystrokes, you can fly through invoices and expense reports without ever needing to look up a percentage table again. On printing calculators (e

Tip: If your Casio has a key, press and hold it instead. On printing calculators (e.g.

: Input the amount and press [TAX+] to see the price with tax.