Fixed income investments are those investments which are made from some fixed capital. Bank fixed deposit is considered the paramount fixed investment option. It keeps the money secured and offers an average return of 8.5–9.5%. There are also many other options like-

• Tax Saver FD’s offer an average of 8.25–9.5%
• Senior citizens savings scheme offers deduction as per 80C with a profit of 9.3% returns
• P2P lending is the most lucrative and radical fixed investment option. It provides the investor and average return of 18%

There are many other options which I learned through an online article http://www.loankuber.com/content/investments/what-are-some-different-fixed-income-investment-options/ . This website Loankuber has many other articles that would help an investor.