The rebate us/ 87A has now been revised to Rs 12,500 for FY 2019-20 / AY 2020-21. This means that if the total tax payable is lower than Rs 12,500, then that amount will be the rebate under section 87A. This rebate is applied to the total tax before adding the Education Cess (4%).
Only Individual Assesses earning net taxable income up to Rs 5 lakhs are eligible to enjoy tax rebate u/s 87A.
For Example : Suppose your yearly pay comes to Rs 6,50,000 and you claim Rs 1,50,000 u/s 80C. The total net income in your case comes to Rs 5,00,000 which makes you eligible to claim tax rebate of Rs 12,500.
The amount of tax rebate u/s 87A is restricted to maximum of Rs 12,500. In case the computed tax payable is less than Rs 12,500, say Rs 10,000 the tax rebate shall be limited to that lower amount i.e. Rs 10,000 only.
The Tax Assesse is first required to add all incomes i.e. salary, house income, capital gains, business or profession income and income from other sources and then deduct the eligible tax deduction amounts u/s 80C to 80U and under section 24(b) (Home Loan Interest) to come up with the net taxable income.
If the above net taxable income happens to be less than Rs 5 lakhs then the tax rebate of Rs 12,500 comes in to the picture and should be deducted from the calculated total income tax payable.