Invest Ksh 250,000 in Mayfair MMF for 20 years.
At Mayfair Money Market Fund's current net yield of 5.75% (after Kenya's 15% withholding tax), a Ksh 250,000 deposit grows to about Ksh 789,477 after 20 years — about Ksh 539,477 in interest, assuming daily compounding and no withdrawals.
Final balance
Ksh 789,477
3.16× your deposit
Deposited
Ksh 250,000
One-off, no withdrawals
Interest earned
Ksh 539,477
At 5.75% 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 3,115,535 over the same 20 years — that's -Ksh 2,326,058 less than Mayfair Money Market Fund.