Advance tax liability if tds is regularly paid

You will have to estimate your income for the year and calculate tax on it. then deduct the expected tds. If net tax payable is grater than Rs. 10,000/- ou will have to pay advance tax.

TDS on your salary will be deducted as per slab rates applicable to you. However, TDS on rent will be deducted @ 10%. If your total taxable income falls in 20% or 30% slab, then you will have to check your liability for advance tax as above.

If the place you are letting out is owned, then the rent will be income from house property, wherein you shall get 30% deduction. There shall be a leave and licence agreement for rent which is usually for 11 months. So you can calculate how much rent is likely to be receiveable for the financial year. You have the option of showing other incomes to your employer and ask to deduct TDS at a higher rate. And also check the deductions under 80C.