Is this calci allowed for cpt exams?

No,this calculator is not allowed as it has 7 functions:add,subtract,multiply,divide,percentage,square root and tax.

Look for a calculator without the tax function like this one here

https://www.letsbuy.com/citizen-desktop-calculator-ct500j-p-25828

Yes,It is allowed,Don't worry it is a very commonly used model,Moreover keep habit of using check & currect buttons to review your calculation.

@ Vikram : Tax button is not restricted.We have used such calculators,Problem is only with Scientific Calculators

Vikram the model you mentioned also have square root. Even i guess this is a normal caclis and i have seen students buying such models during exam time.But wording wise i agree its not allowed. Main reason being 2 memories whereas these models store upto 120 steps.Plus tax button. But problem now is these all models are basic else one gets small pocket caclis which is tedious to use. So i am confused.

theres no problem with using this calci in cpt. But avoid it because you are not allowed to use a calculater with tax function at ipcc and final ,the rest of the functions are okay. look for a citizen ct-512. or a calci which has the same functions as ct-512