What Exactly is Advance Tax?
Advance tax is essentially a 'pay-as-you-earn' system for income tax. Instead of paying your entire tax liability in a lump sum at the end of the financial year, the government requires you to pay it in instalments as you earn your income. This applies
to anyone whose total tax liability for the year is expected to be ₹10,000 or more after accounting for any Tax Deducted at Source (TDS). The rule covers most self-employed professionals, freelancers, and business owners, as their income isn't typically subject to full TDS deductions like a salaried person's is. The system ensures a steady flow of revenue for the government and prevents a heavy financial burden on taxpayers at the end of the year.
The September 15 Deadline Explained
The Income Tax Act mandates four advance tax instalments throughout the financial year. The September 15 deadline is for the second instalment. By this date, you are required to have paid a cumulative total of at least 45% of your total estimated tax liability for the year. This includes the 15% you should have paid by the first deadline on June 15. So, if you paid the first instalment correctly, you need to pay an additional 30% by September 15. If you missed the June deadline, you must now pay the entire cumulative 45% to catch up and avoid further interest charges.
How to Calculate Your Payment
Calculating your advance tax involves a few key steps. First, estimate your total expected income from all sources for the entire financial year (April 1 to March 31). For a business owner or freelancer, this is your gross revenue. Next, subtract your eligible business expenses to arrive at your estimated net profit. From this, subtract any available deductions under sections like 80C or 80D. Apply the applicable income tax slab rates to this net taxable income to find your total estimated tax for the year. Finally, subtract any TDS that has already been deducted by your clients. If the remaining amount exceeds ₹10,000, that is your advance tax liability. For the September 15 deadline, you need to pay 45% of this total amount.
A Simpler Route: The Presumptive Scheme
For many freelancers and small business owners, the Presumptive Taxation Scheme offers significant relief from complex calculations and record-keeping. Professionals like writers, designers, and consultants can use Section 44ADA if their gross annual receipts are within the specified limit. Under this, your income is presumed to be 50% of your gross receipts, and you pay tax on that amount. Similarly, small businesses can use Section 44AD, where income is presumed to be 8% of turnover (or 6% for digital transactions). A major advantage for those under these schemes is that they are exempt from the quarterly instalment schedule. They can pay their entire advance tax liability in a single payment by March 15. However, if you opt out of this scheme, you must follow the quarterly deadlines.
How to Pay Online
Making your advance tax payment is a straightforward online process. You need to use Challan 280 on the government's official income tax e-filing portal. After logging in, navigate to the 'e-Pay Tax' section. You'll be prompted to enter your PAN, the correct Assessment Year (for the current Financial Year 2026-27, the AY is 2027-28), and select 'Advance Tax' as the type of payment. You can complete the payment using net banking, a debit card, or UPI. Once the payment is successful, a challan receipt with a Challan Identification Number (CIN) will be generated. It is crucial to save this receipt, as you will need these details when filing your annual income tax return.
What If You Miss the Deadline?
Failing to pay or underpaying your advance tax instalments has financial consequences. The Income Tax Act levies penal interest under two main sections. Section 234C applies to the deferment of individual instalments. If you pay less than the required 45% by September 15, a simple interest of 1% per month will be charged on the shortfall for a period of three months. Additionally, Section 234B applies if your total advance tax paid by the end of the financial year (March 31) is less than 90% of your final assessed tax. This also attracts a 1% monthly interest on the deficit, calculated from April 1 of the following year.
















