Enter your starting amount, monthly top-up, the fund’s effective annual yield and the number of months. Use the yield your fund publishes; this calculator does not invent fund rates.
Estimate only. Rates checked 13 Oct 2026.
How it works
The calculator converts the effective annual yield into a monthly rate, adds interest each month, deducts 15% withholding tax, and reinvests the rest. KRA’s resident WHT rate on interest is 15%. Published MMF yields are usually net of the fund’s management fee; check your fund’s fact sheet.
Comparing with a bank deposit? Try the fixed deposit calculator.
Frequently asked questions
Is MMF interest taxed in Kenya?
Yes. Interest is subject to 15% withholding tax for residents.
Where do I find my MMF’s yield?
On the fund manager’s website or fact sheet.
More: All guides · Tax calculators · PAYE calculator
Sources
- KRA – Withholding Income Tax FAQs (checked 13 October 2026)
See also: MMF rates today · all 59 money market funds
