Invest Ksh 500,000 at National Bank of Kenya for 10 years.
At National Bank of Kenya's current weighted-average deposit rate of 7.92%, a Ksh 500,000 deposit grows to about Ksh 1,101,035 after 10 years — about Ksh 601,035 in interest, assuming monthly compounding and no withdrawals.
Final balance
Ksh 1,101,035
2.20× your deposit
Deposited
Ksh 500,000
One-off, no withdrawals
Interest earned
Ksh 601,035
At 7.92% p.a.
Year by year
Contributions form the floor; interest compounds on top.
Could you earn more elsewhere?
The same Ksh 500,000 in Cytonn Money Market Fund — currently Kenya's top-yielding MMF at 9.39% net of 15% WHT — would grow to about Ksh 1,274,046 over the same 10 years. Run your own numbers on the compound interest calculator.