GST Calculator by Casio MJ-120GST

By | June 4, 2019
(Last Updated On: June 4, 2019)

GST Calculator by Casio MJ-120GST


Casio MJ-120GST is one of the world’s first calculator with 5 dedicated keys for GST Calculations for different GST slabs. These 5 keys are pre-configured with current GST slabs i.e. 0%, 5%, 12%, 18% and 28%. You can also change the assigned GST rates if need be. Now calculating value with or without GST, for any slab, is very easy and fast.


The calculator also has GST GT key – using that along with 5 GST Slab keys, you can easily calculate slab wise and grand total of Net Value, Gross Value and GST Value.


An ideal Calculator for every trader, retailer and office dealing with GST – Casio MJ -120 GST.

GST Calculator by Casio  MJ-120GST


Buy GST Calculator online : Click here

How to use GST Cacluator


Malayalam Version: https://www.youtube.com/watch?v=8FgWv…

Kannada Version: https://www.youtube.com/watch?v=OUG2t…

Gujarati Version: https://www.youtube.com/watch?v=ee-HE…

Telugu Version: https://www.youtube.com/watch?v=DTHRt…

Tamil Version: https://www.youtube.com/watch?v=Oltk8…

Bengali Version: https://www.youtube.com/watch?v=wgAjM…

Oriya Version: https://www.youtube.com/watch?v=pe-7L…

GST calculations (calculation of multiple tax rates, calculating price-plus-tax, price-less-tax, and tax grand totals, calculating the price-plus-tax, price-less-tax, and tax subtotals for each tax rate (recall mode)),

  • 5 independent GST keys,
  • total GST/tax slab grand total,
  • rounding and decimal selector,
  • Indian comma marker,
  • grand total,
  • 200 steps check and correct,
  • plastic keys,
  • extra large display,
  • 12 digit
  • solar and battery powered,
  • screen size: 13.5(w) x 81.5(l).

Casio GST Calculator – MJ-120GST

5 SLAB GST

5 GST Slab Keys (Changeable GST Rate)

5 dedicated keys for GST Calculation – 0%, 5%, 12%, 18% and 28%. If required, these can be changed to new slab rate. You can easily calculate value with/without GST for any slab rate.

GST GT keys

GST GT Key

To calculate Grand Total of Net Value, Gross Value, and GST Value. Once you input base value, and GST Slab rate for various products, use GST GT key to calculate Grand Total.

Tax-GST+Mode

Tax- GST+ Mode

Switch between two modes: Tax- and GST+.

When need to remove GST portion, use Tax- mode, and

when you want to add GST value, use GST+ mode.

Be it Gross Value, Net Value, or MRP – use Tax- GST+ mode to easily calculate desired value.

200 step check


Check and Correct – 200 Steps

Displays up to 200 previous calculation steps and allows you to correct if there is any wrong entry.

F Cut key

F CUT key

Keys to round off your calculation, and shows answer up to selected number of digits.

Memory keys



Memory Keys

Use M+, M- and MRC keys to store value in Memory and reuse it for multi- step calculation.

Indian Comma marker

Indian Comma Marker

Displays numbers in group of Lakh and Crore for easy reading.

Function command sign




Function Command Signs

A symbol (+, -,x, ÷) on the display indicates the status of operation you are currently performing.

Key Rollover

Key operations are stored in a buffer, so nothing is lost even during high-speed input.

Refer New GST Books

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