Invest Ksh 2,000,000 at Credit Bank for 20 years.
At Credit Bank's current weighted-average deposit rate of 12.68%, a Ksh 2,000,000 deposit grows to about Ksh 24,924,277 after 20 years — about Ksh 22,924,277 in interest, assuming monthly compounding and no withdrawals.
Final balance
Ksh 24,924,277
12.46× your deposit
Deposited
Ksh 2,000,000
One-off, no withdrawals
Interest earned
Ksh 22,924,277
At 12.68% 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 12,985,555 over the same 20 years. Run your own numbers on the compound interest calculator.