The fundamental rule of income tax is that tax becomes due as soon as income is earned. So in the case of salaried employees, tax is deducted every month after estimating the total income for the year after considering the deductions. It is very important to arrive at the taxable income and account for deductions to calculate the tax.

Also if the tax already deducted by your employer is more than you are liable to pay then you are eligible to get a refund of the excess amount. But do not forget to mention your bank account in the tax form so that the refund gets credited to the account.

Meanwhile if an individual is paying taxes on a monthly basis and does not have any liability left towards the end of the year, he is still liable to file a return of income. It is a legal obligation for every individual to file a return of income, whose taxable income during the year has exceeded the exemption limit of Rs 1.5 lakh in case of Ordinary citizen.