The top fixed-income investment options include: Company Fixed Deposit- This is one of the best investment options. Non-Banking Financial Companies and financial institutions offer FD at a higher interest rate than other fixed-income investment options. Public Provident Fund- PPF is the option you should go for if you are looking for a safe investment option. The Public Provident Fund comes with a government guarantee. Senior Citizen Savings Scheme- This one is the right choice for senior citizens since it provides you with a regular source of income after retirement. Government Bonds- These enable the Government to raise capital for their setups and projects.