Setting the tax rate on your Casio calculator is a one-time task that saves you from doing manual math every time you need to calculate a grand total or strip tax away from a price. Whether you are using a standard desk model (like the MS-80B) or a heavy-duty printing calculator, the process is nearly identical across most Casio "Tax & Exchange" series.
Input Rate: Enter your desired tax percentage as a whole number (e.g., type "8" for 8%).
| Problem | Likely Cause | Solution | |--------|-------------|----------| | Pressing TAX+ does nothing | No tax rate stored or rate is 0% | Follow the setup steps above to store a rate | | Calculator shows "E" or error | You entered a decimal incorrectly or rate > 99.99% | Most Casios accept up to 99.99%. Re-enter without special characters | | Rate resets after turning off | Model does not have permanent memory | You must reset the rate every power cycle (rare, but happens on ultra-basic models) | | TAX- gives a wrong result | You didn't store the rate properly | Verify by pressing TAX+ with no number – should show correct % | | Cannot find TAX SET button | Model may not have tax function | Look for keys labeled "RATE", "SET", or "TAX". If none, your calculator lacks this feature | how to set tax rate in casio calculator
Note: Different Casio models vary slightly. If the above doesn’t work, look for a RATE or SETUP key, and check the manual. The key principle: Enter rate → Store with TAX+ is the most common pattern.
, the process sometimes requires specific power switch settings. CASIO【How to use calculator Tax calculations】 Setting the tax rate on your Casio calculator
Do you have a specific Casio model number (like MS-80B or JF-120BM) so I can provide the exact button sequence for your device? General Calculator - Support - CASIO
Are you tired of manually calculating taxes on your Casio calculator? Setting the tax rate on your Casio calculator can save you time and reduce errors. In this article, we will walk you through the steps to set the tax rate on your Casio calculator, ensuring that you can accurately calculate taxes with ease. Part 3: Common Mistakes & Troubleshooting | Problem
Check Current Rate: Press [AC] and then press [TAX+]; the current stored rate will flash on the screen.