You as a tax payer you must declare your income to Govt of India as responsible citizen. The income tax returns filing is a process of declaring income, deductions and payment. In any way if you have paid more tax to govt in a financial year, the govt will refund the additional paid against your income in the form of tax to you respective bank account. The income tax return forms are ITR1,2,3,4,5,6 and 7. These are the form which are used to submit different types of income tax returns.