How Much Interest Does KES 100,000 Earn in a Money Market Fund?

20 May 2026

You’ve managed to save KES 100,000. It’s sitting in your M-Pesa or a bank savings account, earning next to nothing — or worse, slowly losing value to inflation. You’ve heard about money market funds but you’re not sure what your KES 100,000 would actually earn. Real numbers. Real returns. Before and after tax.

Here’s the short answer: a KES 100,000 money market fund investment in Kenya earns between KES 708 and KES 1,250 per month at current rates, depending on the fund you choose. Over one year, that’s KES 8,500 to KES 15,000 in net returns — from money that would have earned almost nothing sitting idle.

This guide breaks down exactly what KES 100,000 earns in a money market fund in Kenya today, which funds are paying the most, what taxes apply, and how to get started in under 10 minutes.


What Is a Money Market Fund?

A money market fund (MMF) is a regulated investment product that pools money from thousands of investors and places it into short-term, low-risk instruments — mainly government Treasury Bills, fixed deposits at commercial banks, and high-quality commercial paper.

In Kenya, all money market funds are regulated by the Capital Markets Authority (CMA). This means every fund must meet strict investment guidelines, publish daily yields, and submit to regular audits. You are not handing your money to a stranger — you are investing through a licensed institution under government oversight.

Key features that make MMFs attractive:

  • Daily interest accrual — your KES 100,000 earns interest every day, including weekends and public holidays
  • High liquidity — most funds process withdrawals within 24 hours (T+1), with some taking up to 3 business days (T+3)
  • Low entry barrier — minimum investment starts at KES 100 in some funds; most require KES 1,000–5,000
  • No lock-in period — unlike fixed deposits, you can withdraw without penalties

KES 100,000 in a Money Market Fund: The Real Numbers

Let’s get specific. Below is what KES 100,000 earns at three rate scenarios — 9%, 12%, and 15% gross annual yield — which reflect the actual range of funds available in Kenya right now.

Understanding Gross vs. Net Yield

Every MMF gain in Kenya is subject to a 15% Withholding Tax (WHT), deducted at source by the fund manager before crediting your account. You never see or handle this tax — it’s remitted directly to KRA on your behalf.

Net yield = Gross yield × 0.85

Gross Annual Yield Net Annual Yield Monthly Earnings on KES 100K 6-Month Earnings 1-Year Earnings
9% 7.65% KES 638 KES 3,906 KES 7,975
12% 10.2% KES 850 KES 5,213 KES 10,710
15% 12.75% KES 1,063 KES 6,541 KES 13,444

Note: These are approximate figures based on simple annualised calculations. Daily compounding increases actual returns slightly above these figures.

The Power of Daily Compounding

Unlike bank savings accounts that calculate interest monthly or quarterly, money market funds accrue interest daily — and that interest earns interest the next day. Over time, this compounds meaningfully.

At a net yield of around 9.4% with daily compounding, KES 100,000 grows to approximately KES 159,564 after 5 years— a gain of KES 59,564 without adding a single shilling. That same KES 100,000 left in M-Pesa earns KES 0 over the same 5 years.


Top Money Market Funds in Kenya and What They’re Paying (2026)

Kenya’s money market fund landscape has shifted in 2026. The CBK has been cutting its policy rate — from 9.0% in January to 8.75% in February — which has put gentle downward pressure on MMF yields compared to the exceptional 2024–2025 period. However, well-managed funds are still delivering strong returns.

Here are the top performers as of early-to-mid 2026:

Fund Gross Yield Net Yield (est.) Minimum Investment
Cytonn Money Market Fund 11.81–11.9% ~10.0–10.1% KES 100
Arvocap Money Market Fund 11.8–12.13% ~10.0–10.3% KES 1,000
Nabo Africa Money Market Fund 10.89–11.4% ~9.3–9.7% KES 1,000
Etica Money Market Fund ~11.2% ~9.5% KES 1,000
Mayfair Fixed Income Fund ~13.96% net ~13.96% Varies
Lofty-Corban Money Market Fund ~11.0% ~9.4% KES 1,000
Zidi by Sanlam (M-Pesa) 14–18% gross* ~12–15%* KES 100

Top-tier and fixed income funds at the Zidi/Sanlam tier carry higher yield alongside specific portfolio concentrations — always check the fund fact sheet.

Why do yields differ so much?

Three main factors:

  1. Management fees — ranging from 0.9% to 3% per year, deducted before the advertised yield. Always ask for the net-of-fees yield.
  2. Portfolio strategy — funds that hold more corporate paper and fixed deposits at non-tier-1 banks earn higher yields than those staying purely in government T-bills
  3. Fund size — smaller, more agile funds can take advantage of higher-yielding placements that larger funds can’t access at scale

Cytonn, for instance, holds roughly 64% of its portfolio in fixed and demand deposits — a strategy that boosts yield but requires trust in their credit selection process. Nabo, meanwhile, deliberately targets fixed deposits with non-tier-1 banks, locking in today’s higher rates before the CBK’s easing cycle reduces them further.


Is Your KES 100,000 Actually Growing? The Inflation Question

Earning 9% looks great — until you factor in inflation. Here’s what the real picture looks like.

Kenya’s annual inflation rate stands at 4.4% as of March 2026 (KNBS data), though April 2026 saw it jump to 5.6% driven by fuel and food price increases. For planning purposes, assume an inflation environment of 4.5–5.5%.

Real return = Net yield minus inflation rate

Fund Scenario Gross Yield Net Yield (after WHT) Inflation (2026) Real Return
Low-performing fund 9% 7.65% 5% +2.65%
Mid-tier fund 12% 10.2% 5% +5.2%
Top-tier fund 15% 12.75% 5% +7.75%

The key takeaway: even the lowest-performing MMFs are beating inflation right now. Your KES 100,000 is genuinely growing in real terms — not just nominally. The mid-to-top tier funds are producing real returns of 5–7%, which is meaningful wealth creation over time.

Compare this to a bank savings account paying 3–4% gross, which after WHT delivers roughly 2.55–3.4% net — below inflation. Your money in a bank savings account is losing purchasing power in 2026.


Money Market Fund vs. Bank Savings vs. M-Pesa: The KES 100,000 Comparison

Here’s what happens to KES 100,000 over one year across the three most common places Kenyans keep their savings:

Savings Vehicle Annual Return KES 100K After 1 Year Notes
M-Pesa balance 0% KES 100,000 No returns; exposed to spending temptation
Bank savings account 2.55–3.4% net KES 102,550–103,400 After 15% WHT; not compounded daily
MMF (9% gross) 7.65% net KES 107,950 Daily compounding; T+1 access
MMF (12% gross) 10.2% net KES 110,710 Daily compounding; T+1 access
MMF (15% gross) 12.75% net KES 113,444 Daily compounding; T+1 access

The difference between keeping KES 100,000 in M-Pesa versus a mid-performing money market fund is over KES 10,000 per year — essentially free money left on the table.

What About Fuliza?

If you’re keeping money in M-Pesa and also using Fuliza regularly, the math becomes even starker. Fuliza charges daily access fees that can amount to KES 2,400–7,200 per year depending on usage frequency and repayment speed. You’re simultaneously earning zero on idle savings and paying daily fees on borrowed float. Moving your buffer into an MMF eliminates both problems — your money earns returns, and a proper buffer means you no longer need to borrow small amounts.


How to Invest KES 100,000 in a Money Market Fund in Kenya

Getting started is simpler than most people expect. Here’s the process, step by step:

Step 1 — Choose a CMA-regulated fund

Only invest in funds licensed by the Capital Markets Authority. You can verify any fund’s licensing status at cma.or.ke. Compare funds on Serrari (serrarigroup.com) or Money254 for side-by-side yield comparisons updated regularly.

Step 2 — Register online

Most funds allow full online registration. You will need:

  • Your National ID or Passport
  • KRA PIN certificate
  • M-Pesa number or bank account details
  • Next-of-kin information

Some funds require you to complete a short CMA investor profile questionnaire. This takes 5–10 minutes.

Step 3 — Fund your account via M-Pesa

Use the Paybill or Till Number provided by your fund manager. Most funds process same-day or next-business-day confirmation.

Step 4 — Your money starts earning

From the next business day after your deposit clears, your KES 100,000 begins accruing interest daily — including on weekends and public holidays.

Step 5 — Monitor and withdraw as needed

Log in to your fund dashboard to track daily accrual. Withdrawals are typically processed within 24–72 hours back to your M-Pesa or bank account, with no exit fees.


The Bottom Line: What KES 100,000 Earns in a Money Market Fund

A KES 100,000 money market fund investment in Kenya earns between KES 7,975 and KES 13,444 per year net of withholding tax, depending on the fund you choose. That’s between KES 638 and KES 1,063 every single month — from money you’re not actively using.

At the top-performing tier, KES 100,000 invested today compounds to over KES 159,000 in five years without adding any additional capital.

In an environment where bank savings accounts are consistently losing to inflation, and M-Pesa earns nothing, a money market fund is the most straightforward upgrade any Kenyan saver can make.

Before you invest, compare current fund yields on Serrari or Money254 — yields change weekly as CBK policy rates shift.

Disclaimer: Past performance is not a guarantee of future returns. MMF yields fluctuate with market conditions. All figures in this article are for illustrative purposes based on current data (2026) and should not be taken as financial advice. Consult a licensed financial advisor before making investment decisions.


Sources: Sentill Africa (April 2026), Vasili Africa MMF Report (February 2026), Business Radar Kenya (February 2026), Kenya National Bureau of Statistics CPI Reports (March–April 2026), Fineducke MMF Rankings (March 2026), Serrari Group Yield Comparator.

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