Why September is a Critical Month for Taxpayers
September is not just another month on the calendar for taxpayers in India; it marks a significant deadline. The second instalment for the payment of advance tax for the financial year 2026-27 is due on September 15, 2026. By this date, taxpayers are
required to have paid at least 45% of their total estimated tax liability for the year. This applies to anyone—salaried individuals, freelancers, and business owners—whose total tax liability for the year is expected to be ₹10,000 or more after accounting for Tax Deducted at Source (TDS). Missing this deadline or underpaying can lead to interest penalties, making it a crucial period for financial housekeeping.
Understanding How Your FD Interest is Taxed
A common misconception is that tax on fixed deposit interest is only a concern at maturity or if the bank deducts TDS. The reality is that interest earned from an FD is fully taxable and must be included in your total income under the head 'Income from Other Sources'. This income is taxed according to your individual income tax slab, not at the flat 10% rate of TDS. Importantly, the tax is levied on an accrual basis. This means you are liable to pay tax on the interest earned each financial year, even if you have a cumulative FD where the interest is reinvested and paid out only at maturity.
The Role of TDS and Why It Might Not Be Enough
Banks are required to deduct TDS at a rate of 10% if the interest income from all your deposits with that bank exceeds ₹50,000 in a financial year for individuals and ₹1,00,000 for senior citizens. If you haven't provided your PAN, this rate jumps to 20%. However, TDS is just a part of your total tax liability. If your total income places you in the 20% or 30% tax bracket, the 10% TDS deducted by the bank will not be sufficient to cover your entire tax due on that FD interest. This shortfall is what you need to cover through advance tax payments to avoid a penalty later.
Your September Checklist: Three Essential Steps
To ensure you are compliant, follow this simple checklist in September. First, calculate the total interest that will accrue on all your fixed deposits across all banks for the full financial year. Second, check your Form 26AS. This is your tax passbook, available on the income tax portal, which shows all TDS that has already been deducted against your PAN. This helps you verify the tax credits you can claim. Third, estimate your total income from all sources (salary, rent, FD interest, etc.) and calculate your total tax liability for the year based on your tax slab. After subtracting the TDS already paid (as seen in Form 26AS), you will know your net tax liability. If this amount exceeds ₹10,000, you need to pay advance tax.
Calculating and Paying Your September Instalment
Once you have your estimated net tax liability for the year, you can calculate your advance tax instalment. By September 15, you should have paid a cumulative total of 45% of this liability. For example, if your total estimated tax for the year is ₹1,00,000, you should have paid ₹15,000 by June 15 and need to ensure a total of ₹45,000 is paid by September 15. If you paid the first instalment, you would pay the remaining ₹30,000. Paying this amount is straightforward and can be done online through the income tax department's e-payment portal. Failure to meet the advance tax payment schedule can result in interest penalties under Sections 234B and 234C of the Income Tax Act.
