You can override the system calculated income tax by manually entering the tax amount that you want to deduct by following the below mentioned steps.
1. Go to, Run Payroll wizard >> in Run Payroll page >> click on Override Income Tax button to override Income Tax manually.
2. In the employee search box select employee, on selecting employee record will show in the grid list, against selected employee record enter Income Tax amount which needs to be overridden and click on Save.
You can also make changes in income tax amount in bulk by clicking on 'Import list to override Income Tax' to download the tax update template, making changes in it and importing it.
Note: Override Income Tax will work only if Income Tax Computation is chosen as 'Compute for this month’ OR ‘Use previous month's TDS’ options.