Pensioners and retirees, especially those aged 80 or older, need to regularly prove they are alive to continue receiving their pension. They do this by submitting a life certificate to pension-paying authorities like banks or post offices.

The Income Tax Department in India has a tax calendar that lists important dates for taxes. This includes when to file tax returns, pay taxes in advance, and deduct taxes from income. If you miss these dates, you might have to pay extra fees.