The deadline for filing the second instalment of advance tax is today (Tuesday, September 15, 2026). Missing the due date today can lead to penal interest for the taxpayer. But do you also need to pay advance tax? Where can you file it, and what happens if you miss the September 15 deadline? However, note that on some income, like capital gains, you don’t need to pay advance tax before the income is realised. You can pay it after the income has been received.
What is advance tax?
