I used to pay tax till last financial year and currently I'm not?
If your income from ALL sources before deductions under chapter VI A (80C deductions like LIC premiums /PPF etc, 80D Medical insurance etc) is below 2.5 lakh, You need not file returns. However, some people file returns as for taking a bank loan usually past three years Income tax returns are asked. If you do not file return for above reason and if you receive a non filer notice you can simply reply that your income before deductions is below the maximum amount not chargeable to income tax.