Invest Ksh 2,000,000 at Bank of India for 15 years.
At Bank of India's current weighted-average deposit rate of 10.20%, a Ksh 2,000,000 deposit grows to about Ksh 9,176,825 after 15 years — about Ksh 7,176,825 in interest, assuming monthly compounding and no withdrawals.
Final balance
Ksh 9,176,825
4.59× your deposit
Deposited
Ksh 2,000,000
One-off, no withdrawals
Interest earned
Ksh 7,176,825
At 10.20% p.a.
Year by year
Contributions form the floor; interest compounds on top.
Could you earn more elsewhere?
The same Ksh 2,000,000 in Cytonn Money Market Fund — currently Kenya's top-yielding MMF at 9.39% net of 15% WHT — would grow to about Ksh 8,134,913 over the same 15 years. Run your own numbers on the compound interest calculator.