Money Market Fund (MMF) Calculator Kenya

Estimate how an initial investment and monthly contributions could grow in a Kenyan money market fund using the effective annual yield you enter. This is a projection for planning, not a promise of future returns.

KES values Monthly compounding model Editable tax assumption

Your inputs

Enter your figures

Initial investment (KES)

Your starting deposit. KES 0 is allowed when you are modeling monthly saving only.

Monthly contribution (KES)

Contributions are assumed to be deposited at the end of each month.

Annual yield (% p.a.)

Enter your fund’s latest published effective annual yield.

Investment period

How is your quoted yield presented?

Effective yield already includes fees Use this for most published fund yields. Gross yield before fees Use only when the quoted rate excludes fund costs.

Annual fund fee (%)

Set to 0 when the quoted yield is already net of fees.

Withholding tax assumption (%)

Enter the applicable rate and confirm the treatment for the specific fund and investor type.

Check the rate: Use the fund’s latest factsheet for the yield, fees, minimum investment, and withdrawal terms. Returns can change.

Estimated MMF Balance

Based on the figures entered above.

Estimated final balance

KES 0

Estimated net return:

Enter the required figures to see your projected balance.

Total deposited

Gross interest

WHT modeled

Net annual yield

Fund fees modeled

The estimate compounds monthly and adds contributions at month-end. Your provider may calculate returns, fees, tax, or redemptions differently.

Yearly totals

Year-by-year projection

Values are rounded to the nearest shilling.

Your year-by-year projection will appear here after you enter all required assumptions.

Year-by-year MMF projection schedule
Year	Deposits	Net return	Ending balance

Methodology

How this MMF calculator works

We take the annual yield you enter as an effective annual rate and convert it to an equivalent monthly rate. The estimate then applies gross interest, any fund fee, withholding tax, and net return month by month.

Each monthly contribution is added at the end of the month, so a new contribution does not earn a full month of return before it is deposited.

When your provider publishes an effective annual yield that already reflects fund expenses, leave the annual fund fee at zero. If the quoted rate is gross, select the gross-yield option and enter the applicable annual fund fee.

Common questions

MMF calculator FAQs

What rate should I use?

Use the latest effective annual yield published in the specific fund’s factsheet or provider statement. MMF yields move with market conditions, so the entered rate is not a guaranteed future return.

Are MMF returns guaranteed?

No. Returns can change. Check the fund’s prospectus, fees, liquidity terms, and latest factsheet before investing.

Does the calculator include withholding tax?

Yes. The rate you enter is applied to each month’s positive taxable return. KRA lists 15% for qualifying interest, but treatment can depend on the product and investor.

Is this a recommendation to buy a fund?

No. This is a mathematical planning tool. It does not rank funds, provide investment advice, or guarantee a particular return.

Sources

Sources and notes

Last checked August 2026

CMA licensee reference Check the regulator’s list of licensed collective investment schemes. KRA withholding tax reference Review qualifying-interest treatment and confirm how it applies to your product. Example factsheet reference Use your own provider’s factsheet for current yields, charges, and methodology.

These links are for reference only and do not endorse a fund, provider, regulator, or quoted rate. Confirm current terms independently before investing.

Business software

Need an investment or savings workflow for your organisation?

Statum builds business systems, integrations, and workflow automation for organisations in Kenya and worldwide.

Talk to the Statum team