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MMF Monthly Contribution Simulator

Runs on your deviceFinancial worksheetFree to use
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Model irregular and regular deposits with variable user-supplied yields and conservative scenario bands.

Workspace

Calculate your returns

Explore how your investment could grow if the selected rate stayed the same.

Using 10.44% · Effective annual yield. As at 27 Oct 2026.
Advanced assumptions
Irregular deposits and source notes

These deposits replace the regular contribution in the specified month. Downloaded reports retain the full inputs and sources.

Tax assumption edition reviewed 2026-10-29. KRA guidance lists 15% for bank interest and distinguishes qualifying interest and exemptions. This does not establish one universal MMF investor tax treatment. Jubilee source separately discloses 15% on investor distributions. KRA source. User-editable scenario only. Investor residence, legal status, income classification and documented exemptions can change treatment. Statutory commencement is not inferred from the review date. Section 20 distinguishes registered scheme treatment, exempt unit holders and amounts already tax paid. Do not impose tax a second time on a yield already net of investor tax.

Read the dated legislative edition. KRA-hosted Kenya Law edition as at 1 July 2026. The document flags unapplied amendments; no automatic legal-status or exemption determination is made. Income Tax Act section 20; section 35; Third Schedule. Check amendments and scheme/investor exemption documentation before assigning treatment.

Illustration only. No future return is guaranteed. Tax and any extra fees depend on your chosen assumptions.

Estimated investment valueKES 110,440.00

Using the published 10.44% annual-rate assumption for 12 months. Rate held constant. Published 2026-10-27. Additional fees and investor tax apply only if selected.

Total invested
KES 100,000.00
Estimated investment earnings
KES 10,440.00
059.6K119.3KMonth 0: value KES 100,000.00, invested KES 100,000.000Month 1: value KES 100,830.95, invested KES 100,000.00Month 2: value KES 101,668.81, invested KES 100,000.00Month 3: value KES 102,513.63, invested KES 100,000.00Month 4: value KES 103,365.47, invested KES 100,000.004Month 5: value KES 104,224.39, invested KES 100,000.00Month 6: value KES 105,090.44, invested KES 100,000.00Month 7: value KES 105,963.69, invested KES 100,000.00Month 8: value KES 106,844.20, invested KES 100,000.008Month 9: value KES 107,732.02, invested KES 100,000.00Month 10: value KES 108,627.22, invested KES 100,000.00Month 11: value KES 109,529.86, invested KES 100,000.00Month 12: value KES 110,440.00, invested KES 100,000.0012
Projected valueTotal invested

Months · KES

Monthly breakdown and downloads
EstimateAmount
Growth at quoted / assumed rateKES 10,440.00
Separate fee estimateKES 0.00
Withholding estimateKES 0.00
Paid-out returnsKES 0.00
MonthOpeningContributionGrowthFeesTaxPayoutClosing
1KES 100,000.00KES 0.00KES 830.95KES 0.00KES 0.00KES 0.00KES 100,830.95
2KES 100,830.95KES 0.00KES 837.86KES 0.00KES 0.00KES 0.00KES 101,668.81
3KES 101,668.81KES 0.00KES 844.82KES 0.00KES 0.00KES 0.00KES 102,513.63
4KES 102,513.63KES 0.00KES 851.84KES 0.00KES 0.00KES 0.00KES 103,365.47
5KES 103,365.47KES 0.00KES 858.92KES 0.00KES 0.00KES 0.00KES 104,224.39
6KES 104,224.39KES 0.00KES 866.05KES 0.00KES 0.00KES 0.00KES 105,090.44
7KES 105,090.44KES 0.00KES 873.25KES 0.00KES 0.00KES 0.00KES 105,963.69
8KES 105,963.69KES 0.00KES 880.51KES 0.00KES 0.00KES 0.00KES 106,844.20
9KES 106,844.20KES 0.00KES 887.82KES 0.00KES 0.00KES 0.00KES 107,732.02
10KES 107,732.02KES 0.00KES 895.20KES 0.00KES 0.00KES 0.00KES 108,627.22
11KES 108,627.22KES 0.00KES 902.64KES 0.00KES 0.00KES 0.00KES 109,529.86
12KES 109,529.86KES 0.00KES 910.14KES 0.00KES 0.00KES 0.00KES 110,440.00

Standardised monthly periods; effective annual rates use the twelfth root, annualised daily rates use a 365-day daily rate compounded over 365/12 days. Growth, separate fees and withholding are rounded to cents each month. Withholding applies to positive growth after separately modelled fees. Embedded fees and already included investor tax are never deducted twice. This is a hypothetical cash-flow model, not an actual unit-price or realised-return reconstruction.

Growth at a net-of-fee quote already includes embedded fund expenses. It does not reconstruct gross portfolio income before those expenses.

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Useful to know

Are these live rates or personalised financial recommendations?

No. Calculations use the assumptions you enter. Included primary-source records have explicit editions and limited coverage. The result does not place trades, connect accounts, verify eligibility or guarantee a return.

What is included in the downloads?

The main CSV contains every result row, even when the screen table is paginated. Additional detail tables have separate CSV downloads. Project JSON contains the inputs and current tracker edits. Printable HTML includes the complete result, method and sources and can be saved as PDF through your browser.

Where are my files and inputs processed?

This tool processes your entries on your device. It does not upload them or save them in an account. Downloads remain on your device; Reset clears the current tool workspace.

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