What is a One Time Payment Tax?
There is nothing like one time tax in income tax. normally all employer takes a declaration about the investments you are going to make and about various other expenses and on that basis you are getting your tax deducted by the employer on average basis . by january end you have to show the proof of investments to qualify for deductions. however any income is not considered by the employer the same is considered in february/march to deduct tax which is the case you paid tax at one go in february as you may not have enough income to pay the balance in march.
