Advance Tax Deadline Today: Consequences of Missing September 15 Due Date

Advance tax deadline today is September 15, 2026. Missing the due date can lead to penal interest for taxpayers. Advance tax is income tax paid during the financial year, not at the end of the year while filing the income tax return. Those with a total tax liability of Rs 10,000 or more after TDS must pay advance tax, including salaried individuals with extra income, freelancers, professionals, and businesses. Tax rates for advance tax purposes are prescribed annually.