The online tax calculation facility gives the tax in paise. What should I enter in the cell 'Tax payable on total income'. Say for example, if the total tax is 45984.50, should I round it off to the nearest Re. 1 like 45985 or should it round it off to the nearest Rs. 10 after discarding the 50 paise, like 45980, or should I round it off first to Re. 1 and then round it off to the nearest Rs. 10 like, 45990.