PPF-Public Provident Fund The Grand old man of investment

PPF is among the most popular small saving schemes. Currently, this scheme offers a return of 8 per cent and has a maturity period of 15 years. It provides regular savings by ensuring that contributions (which can vary from Rs.500 to Rs.70,000 per year) are made every year. For efficient "tax saving" there is nothing better than PPF.
How to invest in PPF?
A PPF account can be opened with a minimum deposit of Rs.100 at any branch of the State Bank of India (SBI) or branches of it's associated banks like the State Bank of Mysore or Hyderabad. The account can also be opened at the branches of a few nationalised banks, like the Bank of India, Central Bank of India and Bank of Baroda, and at any head post office or general post office.
After opening an account you get a pass book, which will be used as a record for all your deposits, interest accruals, withdrawals and loans.
You can have only one PPF account in your name. If at any point it is detected that you have two accounts, the second account that you have opened will be closed, and you will be refunded only the principal, not the interest.
Two adults cannot open a joint account. The account will have to be opened in only one person’s name. The person who opens an account is free to appoint nominees.
Cautions
Those who are looking for liquidity, PPF is NOT a good option. Withdrawals are allowed only after five years from the end of the financial year in which the “first deposit” is made.

PPF does not provide any regular income and only provides for accumulation of interest over a 15-year period, and the lump-sum amount (principal + interest) is payable on maturity.
Tips
The lump-sum amount that you receive on maturity (at the end of 15 years) is completely tax-free
If you are relatively young and have time on your side, then PPF is for you. Its like saving money for the rainy day.
PPF is very useful and according to me it is advisable to all.
Following are some of the benefits -
1. Secured returns.
2. The returns are tax-free
3. Minimum lock-in period of 15 years, hence serves as a long term investment.
4. In an event of bankruptcy, no one can touch your PPF balance, not even
Government of India.