There is time to do some important work by the end of this month i.e. till 31st December 2025, otherwise you may suffer loss in car, investment and tax. Learn in this video: Buy a cheap car – Cars of companies like Maruti, Tata, MG, Hyundai may become expensive from January 1. MG has already increased the prices by 2%. Interest rates on small savings schemes – FD and Small Savings Scheme rates may reduce till December 31. Invest now to get more interest. Link Aadhaar with PAN – If not linked till 31st December, PAN may become inactive and may lead to problems related to bank, ITR or mutual fund. File Income Tax Return (ITR) – After 31st December, problems like late fees and stoppage of refund may arise.