Invest Ksh 250,000 in Old Mutual MMF for 10 years.
At Old Mutual Money Market Fund's current net yield of 8.21% (after Kenya's 15% withholding tax), a Ksh 250,000 deposit grows to about Ksh 568,140 after 10 years — about Ksh 318,140 in interest, assuming daily compounding and no withdrawals.
Final balance
Ksh 568,140
2.27× your deposit
Deposited
Ksh 250,000
One-off, no withdrawals
Interest earned
Ksh 318,140
At 8.21% net p.a.
Year by year
vs keeping it in a bank savings account
The same Ksh 250,000 at Credit Bank's deposit rate of 12.68% would grow to about Ksh 882,544 over the same 10 years — that's -Ksh 314,403 less than Old Mutual Money Market Fund.