Invest Ksh 5,000,000 at Bank of India for 15 years.
At Bank of India's current weighted-average deposit rate of 10.20%, a Ksh 5,000,000 deposit grows to about Ksh 22,942,063 after 15 years — about Ksh 17,942,063 in interest, assuming monthly compounding and no withdrawals.
Final balance
Ksh 22,942,063
4.59× your deposit
Deposited
Ksh 5,000,000
One-off, no withdrawals
Interest earned
Ksh 17,942,063
At 10.20% p.a.
Year by year
Contributions form the floor; interest compounds on top.
Could you earn more elsewhere?
The same Ksh 5,000,000 in Cytonn Money Market Fund — currently Kenya's top-yielding MMF at 9.39% net of 15% WHT — would grow to about Ksh 20,337,282 over the same 15 years. Run your own numbers on the compound interest calculator.