STANDARD DEDUCTION U/S 87A FOR FY 2018-19

For individual India tax slab started from yearly income 250000/-
then 250000 to 300000 -- 5%
then 500001 to 1000000 -- 10%
then above rs 1000000 it charged 20%

but any individual income less then 350000 after deduction u/s 80, will get rebate on U/S 87A of rs 2500 maximum.

So if your income after deduction of section 80 is Rs. 3,12,000/- then u will pay  

                          Then your tax amount = Rs. 3,100/-. 

            Less Rebate U/S 87A you get  =Rs. 2,500/-

So total Tax in this case is Rs. 600/- + Cess 4% = Rs. 624/-

But if your total income after deduction Rs. 3,51,000/- and 
as u have crossed rs 350000 slab so u pay Tax =Rs. 5,050/- + Cess  @ 4% = Rs.202/-.
There after total tax = Rs. 5,252/-

But if your total income is Rs.  3,00,000/- after deduction U/S 80

                                                                           Then your Tax = Rs.2,500/-

                                                                   Less Rebate U/S 87A = Rs.2,500/-

                                                                         So your Total Tax = Nil

 Eligibiolity of Tax rebate U/S 87A

• You mast be resident of India
• Your Annual Income dose not exceed Rs.3.5 lakh after deduction U/S 80.
• Maximum deduction U/S 87A is Rs.2,500/-