What is Section 89(1) It is a relief provided by the income tax department in relation to amount received in advance or in arrears in the form of salary which is related to any other financial year. Basically, when any person receive salary in arrears or in advance in any particular year then there might be chances that their income will falls in the higher slab and taxed at the higher rate, which would have not been the case if the same salary is receive in their respective year. Therefore, to avoid such higher tax due to timing difference, income tax department has provided relief under section 89(1) Steps to calculate the relief u/s 89(1) Step 1 Calculate the tax payable on total income including arrears of relevant previous year in which salary should have been received. (A) Step 2 Calculate the tax payable on total income excluding arrears of relevant previous year in which salary should have been received. (B) Step 3 Calculate difference between A-B=(C) Step 4 Calculate tax...