Whenever it comes to filing income tax returns (ITR), many people keep waiting for the ‘last date’, in the hope that the government may extend the date as usual, but this time the Income Tax Department’s attitude seems quite strict. The last date for filling ITR for most taxpayers is 31 July, but another deadline is coming close for certain types of taxpayers – and that is 15 September2025. For whom is this date of September 15? This date is mainly for secorctivate (companies) and those who are required to audit their income. Along with this, it is also the last date for those who have to fill the second installment of advance tax for those who have to fill. The biggest question is. Trends like#Extend_Due_Date_IMMEDIELY are running on social media, but the government has not given any positive indication on it yet. Experts believe that this time the government is not in the mood to increase the deadline, because the system is working properly and people have been given enough time. What will be the result of doing the delayed ITR (Belted ITR). Will have to fill. (If your income is less than 5 lakhs then the fine will be ₹ 1000). Interest on advance tax: If you do not deposit advance tax, you will also have to pay interest on the outstanding tax. If you also come inside the deadline, then file your returns today without delay and avoid penalty.