Latest: Income Tax Calculator for the financial year, FY 2020-21. Income Tax Calculator is an app that helps you calculate the payable tax for the income you earned. Income tax slab is shown in the app for Individual Male, Female, Senior Citizen, and Super senior citizen. Tax preparation is very easy using this Income Tax calculation app. It provides you with free tax preparation help. You just need to enter all of your income and the deductions. The app will tell you the payable tax amount. On