There is a beautiful Chinese proverb, 'The best time to plant a tree was 20 years ago, the second time is today'.
No one has any reason to delay investing
except that he does not have money to invest. Under this, it is better to use mutual funds instead of doing it automatically.
There is no minimum investment age. The moment one starts earning and saving, one can start investing in mutual funds. In fact, even children can open their investment account with mutual funds, with money that they occasionally get as gifts on their birthdays or festivals. Similarly, there is no upper limit on the age of the investor for investing in Mutual Funds.
Mutual Funds have various, suitable schemes to suit different purposes. Some are suitable for long-term growth, some such schemes are for those who need security of regular income, and some are such that provide liquidity even in the short term.
It is important to note, whatever stage of age you are in or whatever your needs are, mutual funds have the solution for all.