Treasury Bills vs Money Market Funds in Kenya: Which Is the Better Investment?

Treasury Bills and Money Market Funds are two of the most popular low-risk investments in Kenya. T-Bills are government securities issued weekly by the Central Bank of Kenya with a minimum of Ksh 100,000. Money Market Funds are pooled investment funds managed by licensed fund managers, accessible from as little as Ksh 100. Both are safe — but they suit different investors and different goals.

---

Key Takeaways

• Treasury Bills are direct government obligations; Money Market Funds are pooled funds that invest in T-Bills, bank deposits, and other short-term instruments.
• T-Bills require a minimum of Ksh 100,000; most MMFs start from Ksh 100 to Ksh 1,000.
• MMFs offer same-day or next-day withdrawal; T-Bills lock your money until maturity unless you sell on the secondary market.
• T-Bill interest is taxed at 15% Withholding Tax; MMF dividends are also subject to WHT but the effective rate depends on the fund’s underlying assets.
• T-Bills often offer slightly higher gross yields; MMFs offer far greater flexibility and accessibility.
• The right choice depends on your investment amount, liquidity needs, and how hands-on you want to be.

---

Introduction

When Kenyan investors look for somewhere safe to park money and earn a return, two options come up repeatedly: Treasury Bills and Money Market Funds. Both sit at the lower end of the risk spectrum. Both beat a standard savings account. And both are accessible to ordinary Kenyans — though under very different conditions.

The question is not which one is better in absolute terms. The question is which one is better for your situation. A young professional saving for a car in six months has different needs from a retiree looking to preserve capital while earning steady monthly income. A business owner with idle cash of Ksh 2 million has different priorities from a university student investing for the first time with Ksh 5,000.

This guide gives you a detailed, side-by-side comparison of Treasury Bills and Money Market Funds in Kenya — covering returns, liquidity, tax, costs, accessibility, risk, and the specific circumstances where each option wins.

---

What Are Treasury Bills in Kenya?

Treasury Bills are short-term debt securities issued by the Government of Kenya through the Central Bank of Kenya (CBK). They are sold at a discount and redeemed at full face value at maturity. The difference between what you pay and what you receive is your return.

CBK issues three tenors every Monday at a weekly auction:

Tenor	Maturity	Typical Use
91-Day T-Bill	~3 months	Short-term capital preservation
182-Day T-Bill	~6 months	Medium-term savings goals
364-Day T-Bill	~12 months	Annual savings cycle

Minimum investment: Ksh 100,000 (in multiples of Ksh 50,000 thereafter).

How to access: Directly via CBK’s DhowCSD portal at www.dhowcsd.go.ke, or through a commercial bank or licensed stockbroker.

Interest mechanism: You pay the discounted price upfront and receive the full face value at maturity. Interest is effectively paid at the beginning of the investment period.

---

What Are Money Market Funds in Kenya?

A Money Market Fund (MMF) is a type of unit trust that pools money from many investors and invests it in a diversified portfolio of short-term, low-risk instruments. These instruments typically include Treasury Bills, Treasury Bonds (short-duration), fixed deposits at commercial banks, commercial paper, and call deposits.

In Kenya, MMFs are licensed and regulated by the Capital Markets Authority (CMA). Several fund managers offer MMFs to retail investors, including CIC Asset Management, Sanlam Investments, Nabo Capital, Britam Asset Managers, Old Mutual Investment Group, NCBA, and others.

Minimum investment: As low as Ksh 100 (varies by fund manager; most start between Ksh 100 and Ksh 1,000).

How to access: Via fund manager websites, mobile apps, USSD codes, or through mobile money platforms. Many MMFs now allow investment and withdrawal directly from M-Pesa.

Interest mechanism: Returns are declared daily and credited to your account monthly (or reinvested automatically, depending on the fund). You buy and sell units at the prevailing Net Asset Value (NAV).

---

Treasury Bills vs Money Market Funds: Head-to-Head Comparison

Feature	Treasury Bills	Money Market Funds
Issuer / Manager	Central Bank of Kenya (Government)	Licensed fund managers (CMA-regulated)
Minimum Investment	Ksh 100,000	Ksh 100 – Ksh 1,000 (varies by fund)
Typical Returns (p.a.)	Varies — check CBK weekly	Approximately 10%–14% (varies by fund)
Return Type	Discount (paid upfront)	Daily accrual, paid monthly
Tenor / Lock-in	91, 182, or 364 days	No lock-in; open-ended
Liquidity	Low–Medium (secondary market available)	Very High (T+1 to T+3 withdrawal)
Tax (WHT)	15% on interest income	15% on interest/dividends
Fees	None (DhowCSD direct); bank fees may apply	Annual management fee (typically 1%–2%)
Risk Level	Very Low (government-backed)	Low (diversified, CMA-regulated)
Accessibility	Requires DhowCSD account and Ksh 100,000	App, USSD, M-Pesa from Ksh 100
Who Controls Investments	You	Fund manager
Reinvestment	Manual (you must rebid each auction)	Automatic (returns reinvested in fund)

---

Returns: Which Pays More?

This is the most common question Kenyan investors ask, and the honest answer is: it depends on the period, and the difference is often smaller than people expect once fees and taxes are accounted for.

How T-Bill Yields Work

T-Bill yields fluctuate every week based on market demand, CBK monetary policy, and government borrowing needs. When the CBK raises interest rates, T-Bill yields typically rise. When rates are cut, yields fall. Yields are quoted on an annualised basis, but since the actual investment period is 91, 182, or 364 days, the actual cash return is a fraction of the annual rate.

To illustrate: at a 15% annualised yield, a 91-day T-Bill on Ksh 1,000,000 face value returns approximately Ksh 37,500 gross before the 15% WHT. After tax, you net approximately Ksh 31,875.

How MMF Returns Work

MMF returns are expressed as an annualised effective yield. The fund earns income daily from its underlying instruments (including T-Bills, fixed deposits, and call accounts) and distributes that income to unit holders. Management fees — typically between 1% and 2% per annum — are deducted from the fund before the yield is declared, so the yield you see is already net of management costs but before WHT.

Which Typically Yields More?

In periods when CBK T-Bill rates are high, direct T-Bill investment often offers a slightly higher gross yield than MMFs. This is because MMFs deduct annual management fees (1%–2%), which eat into the headline return. However, MMFs hold a diversified portfolio; in some periods, their exposure to higher-yielding instruments like bank fixed deposits or commercial paper can match or exceed T-Bill rates.

The practical takeaway: if you invest Ksh 1,000,000 or more, direct T-Bills usually offer a marginally better net yield. If you invest below Ksh 100,000, MMFs are your only comparable option.

Always verify current T-Bill yields at www.centralbank.go.ke and compare against fund managers’ published effective annual yields before deciding.

---

Liquidity: A Critical Difference

Liquidity is where the two options diverge most sharply, and for many Kenyan investors it is the deciding factor.

Treasury Bill Liquidity

Once you invest in a T-Bill, your money is committed until the maturity date — 91, 182, or 364 days away. You can sell your T-Bill on the secondary market through the DhowCSD portal before maturity, but:

• The secondary market for retail-sized T-Bills in Kenya can be thin.
• If prevailing interest rates have risen since you bought the T-Bill, you will receive less than your invested amount.
• There is no guarantee of finding a buyer quickly for smaller amounts.

T-Bills are therefore best treated as illiquid for practical purposes unless you are prepared to take a potential loss on early exit.

Money Market Fund Liquidity

MMFs are designed to be highly liquid. Most Kenyan fund managers process withdrawal requests within one to three business days (T+1 to T+3). Several MMFs linked to M-Pesa or mobile banking apps now offer near-instant withdrawals for amounts below certain thresholds.

This makes MMFs ideal as a high-yield alternative to a savings account — you can access your money when you need it without penalty.

Verdict on Liquidity

Money Market Funds win clearly on liquidity. If there is any chance you might need your money before the T-Bill matures, an MMF is the safer choice from a liquidity standpoint.

---

Risk: How Safe Is Each Option?

Both instruments sit at the lower end of the risk spectrum in Kenya, but they are not identical in risk profile.

Treasury Bill Risk

T-Bills are direct obligations of the Government of Kenya. The risk of the government failing to repay a 91-day obligation is considered negligible by most analysts and rating agencies. The primary risks are interest rate risk (if you sell early) and inflation risk (if inflation outpaces the yield). There is no counterparty or credit risk from a fund manager.

Money Market Fund Risk

MMFs are not government-backed directly, but they are diversified and CMA-regulated. The risks include:

• Fund manager risk: The fund manager could be mismanaged or face operational issues, though CMA oversight significantly mitigates this.
• Credit risk: MMFs invest in bank deposits and sometimes commercial paper, which carry slightly higher credit risk than pure government securities.
• Liquidity risk of underlying assets: In a severe market stress event, some underlying instruments could become illiquid, though this is rare in the Kenyan MMF market.
• NAV stability: While MMFs aim to maintain a stable NAV, this is not guaranteed in all market conditions.

In practice, well-established Kenyan MMFs from reputable managers have a strong track record. But from a pure risk standpoint, direct T-Bill investment carries marginally lower risk because you are dealing directly with the government.

Verdict on Risk

Treasury Bills are technically safer because they are direct government obligations. However, reputable Kenyan MMFs are also very low risk in practice, and the difference is minimal for most investors.

Read also: How to Invest in Treasury Bills in Kenya

---

Tax Treatment: What You Actually Keep

Both T-Bills and MMFs are subject to a 15% Withholding Tax on investment income in Kenya. However, the mechanics differ slightly.

T-Bill Tax

For direct T-Bill investors, WHT of 15% is deducted from the discount (interest) at the point of allotment. The net amount is credited to your account automatically. You do not need to pay separately, but you should declare this income in your KRA annual return.

Example: Gross discount of Ksh 37,500 → 15% WHT of Ksh 5,625 → Net income of Ksh 31,875.

MMF Tax

For MMF investors, WHT is typically deducted on the interest/dividend income earned by the fund and distributed to investors. Since the fund holds multiple instruments, the effective tax application may vary slightly by fund structure. Most Kenyan MMFs declare yields that are already net of management fees but gross of WHT. Your fund manager’s statement will show the WHT deducted.

Verdict on Tax

Both are taxed equally at 15% WHT. Neither has a significant tax advantage over the other for most Kenyan retail investors.

---

Costs and Fees

Treasury Bills (Direct via DhowCSD)

Investing directly through the CBK’s DhowCSD portal is completely free of transaction fees. There are no account maintenance fees, brokerage commissions, or management charges. The only cost is the 15% WHT on your interest income.

If you invest through a commercial bank, the bank may charge an administrative fee (typically 0.1%–0.3% of the investment amount). Always confirm charges with your bank before proceeding.

Money Market Funds

MMFs charge an annual management fee, typically ranging from 1% to 2% of assets under management. This fee is deducted from the fund before the yield is declared to investors, meaning the quoted yield is already net of this cost. However, on large sums, the cumulative impact of a 1.5% annual management fee is material.

Example on Ksh 1,000,000 over 364 days: A 1.5% management fee equals Ksh 15,000 deducted before you receive your return. On a direct T-Bill with no management fee, you keep that Ksh 15,000.

Verdict on Fees

Treasury Bills (direct via DhowCSD) are cheaper because there are no management fees. For large investments, this cost difference becomes increasingly significant.

---

Accessibility and Ease of Use

Treasury Bills

• Requires a DhowCSD account, which takes 1–3 business days to verify.
• Minimum Ksh 100,000 is a barrier for many first-time investors.
• Bids must be submitted on Mondays within auction hours.
• Requires basic understanding of the auction process, even for non-competitive bids.
• Not available via M-Pesa or USSD — requires an online account and a bank account.

Money Market Funds

• Can be started in minutes via a smartphone app or USSD code.
• Available from Ksh 100, making them accessible to almost anyone with a mobile phone.
• No auction schedule to manage — invest and withdraw any working day.
• Many funds integrate with M-Pesa for seamless deposits and withdrawals.
• Automatic reinvestment of returns removes the need for active management.

Verdict on Accessibility

Money Market Funds win significantly on accessibility. They are more inclusive, more convenient, and require far less financial knowledge to get started.

---

Who Should Choose Treasury Bills?

Treasury Bills are the better choice when:

• You have at least Ksh 100,000 available to invest and can afford to lock it up for 91 to 364 days.
• You want the absolute maximum yield with no management fees eating into returns.
• You are comfortable with the DhowCSD registration and weekly auction process.
• Capital preservation is your top priority and you want direct government backing.
• You are investing a lump sum — for example, proceeds from a land sale, a bonus, or a matured insurance policy.
• You want to build a disciplined savings habit with fixed maturity dates that prevent impulsive withdrawals.

---

Who Should Choose a Money Market Fund?

A Money Market Fund is the better choice when:

• You are starting with less than Ksh 100,000.
• You need the flexibility to withdraw funds at short notice (emergency fund, business working capital).
• You want to invest small, regular amounts — for example, monthly savings from your salary.
• You prefer a hands-off approach where a fund manager handles allocation decisions.
• You want a high-yield alternative to a bank savings account with very similar accessibility.
• You are new to investing and want a simple, low-minimum starting point.

---

Can You Use Both at the Same Time?

Yes — and for many Kenyan investors, a combination of both is the smartest approach.

A practical two-tier strategy:

Tier 1 — Liquid Reserve (Money Market Fund): Keep 3–6 months of living expenses in a Money Market Fund. This money earns a competitive return but is accessible within 1–3 days for genuine emergencies.

Tier 2 — Committed Savings (Treasury Bills): Invest any surplus above your liquid reserve in 91-day or 364-day T-Bills, rolling them over at each maturity for maximum yield without management fees.

This combination gives you both liquidity where you need it and optimised returns on money you do not need immediately.

---

Pros and Cons Summary

Treasury Bills

Pros

• Direct government backing — lowest possible credit risk.
• No management fees on direct DhowCSD investment.
• Slightly higher gross yields than MMFs in most periods.
• Fixed maturity creates savings discipline.
• Return is known and locked in at time of allotment.

Cons

• High minimum of Ksh 100,000 excludes smaller investors.
• Money is locked in for the full tenor under normal conditions.
• Secondary market liquidity is limited for small amounts.
• Requires active management — you must rebid at each maturity.
• Weekly auction schedule requires planning and timing.

Money Market Funds

Pros

• Start from as little as Ksh 100.
• Near-instant or next-day withdrawals.
• Automatic reinvestment of returns.
• No auction timing required — invest any day.
• Diversified portfolio reduces concentration risk.
• Accessible via M-Pesa and mobile apps.

Cons

• Annual management fees of 1%–2% reduce effective yield.
• Returns fluctuate daily and are not guaranteed.
• Not directly government-backed — carries fund manager risk.
• Yields may vary and are not locked in at investment.

---

Common Mistakes When Choosing Between the Two

Comparing Gross Yields Without Accounting for Fees

A T-Bill quoted at 15% gross and an MMF quoted at 13.5% effective yield look like a clear win for T-Bills. But after 15% WHT, the T-Bill nets approximately 12.75%. The MMF yield of 13.5% may already be net of management fees, putting it closer than the gross comparison suggests. Always compare on an equivalent after-fee, after-tax basis.

Treating an MMF as a Savings Account Replacement for All Your Money

MMFs are excellent but they are not the same as a savings account. They are investment products whose returns fluctuate. In periods of falling interest rates, MMF yields can drop significantly. Diversify across instruments rather than relying entirely on one.

Locking All Your Money in T-Bills Without an Emergency Reserve

Some investors, attracted by T-Bill yields, invest their entire liquid savings in T-Bills only to face an emergency before maturity. Always maintain a readily accessible reserve in an MMF or bank account before committing to T-Bills.

Assuming MMFs Are Risk-Free

No investment product is entirely risk-free. MMFs are low-risk and CMA-regulated, but they are not government-guaranteed. Stick to established fund managers with a strong track record and transparent reporting.

---

Frequently Asked Questions

1. Which gives better returns — Treasury Bills or Money Market Funds in Kenya?

In most periods, direct T-Bill investment offers a marginally higher gross yield than MMFs because T-Bills have no management fee. However, after accounting for the 1%–2% annual management fee charged by MMFs, the difference narrows considerably. For very large investments (Ksh 500,000 and above), T-Bills tend to come out ahead. For smaller amounts or shorter time horizons, MMFs are more practical.

2. Is a Money Market Fund safer than Treasury Bills?

Treasury Bills are technically safer because they are direct obligations of the Government of Kenya. MMFs are very low-risk but are not government-backed — they are CMA-regulated pooled funds. In practice, reputable Kenyan MMFs have a strong safety record, but from a pure risk hierarchy, T-Bills rank slightly higher.

3. Can I invest in both Treasury Bills and Money Market Funds at the same time?

Yes, and doing so is a sound strategy. A common approach is to keep your emergency fund in an MMF for instant access, while investing your longer-term surplus in T-Bills for better yields and zero management fees.

4. What is the minimum amount to start a Money Market Fund in Kenya?

Most Kenyan MMFs allow you to start from as little as Ksh 100 to Ksh 1,000. Some fund managers linked to mobile money platforms like M-Pesa have no formal minimum. This makes MMFs far more accessible than Treasury Bills, which require Ksh 100,000.

5. How quickly can I withdraw money from a Money Market Fund in Kenya?

Most Kenyan MMFs process withdrawals within one to three business days (T+1 to T+3). Some fund managers with M-Pesa integration offer near-instant withdrawals for smaller amounts. Always check the specific withdrawal terms and timelines for the fund you are investing in.

6. Do Money Market Funds in Kenya invest in Treasury Bills?

Yes. Treasury Bills are typically one of the core underlying holdings in most Kenyan MMFs. MMFs also invest in other short-term instruments such as bank fixed deposits, call deposits, and commercial paper. This diversification is part of what makes MMFs low-risk.

7. Are MMF returns guaranteed in Kenya?

No. MMF returns are not guaranteed and fluctuate based on prevailing interest rates and the performance of the fund’s underlying assets. The yields declared by Kenyan MMFs change regularly. However, reputable funds have a track record of consistent positive returns that beat savings accounts.

8. How are Money Market Fund returns taxed in Kenya?

MMF returns (dividends and interest) are subject to a 15% Withholding Tax in Kenya, deducted at source by the fund manager. The effective tax treatment is broadly the same as for T-Bills. Your fund manager’s statement will show the gross income earned and WHT deducted.

9. Which is better for an emergency fund — T-Bills or an MMF?

An MMF is clearly better for an emergency fund because of its liquidity. You can withdraw within one to three business days. A T-Bill locks your money for 91 to 364 days and can only be exited early via the secondary market, which may result in a loss. Never keep your emergency fund in T-Bills alone.

10. Which option is better for a beginner investor in Kenya?

A Money Market Fund is more beginner-friendly because of its low minimum investment (from Ksh 100), easy mobile access, no auction timing requirements, and automatic reinvestment of returns. Once a beginner has accumulated at least Ksh 100,000 in savings, they can consider adding direct T-Bill investment to their portfolio for better yields on the portion they do not need immediate access to.

---

Final Verdict

Both Treasury Bills and Money Market Funds are excellent low-risk investment options for Kenyan investors, and the best choice is not the same for everyone.

Choose Treasury Bills if you have at least Ksh 100,000, can commit the funds for 91 to 364 days without needing them, and want to maximise your net yield by avoiding management fees. T-Bills are also the right choice if you want the highest possible certainty of return — the yield is locked in at allotment and the counterparty is the Government of Kenya.

Choose a Money Market Fund if you are investing below Ksh 100,000, need the flexibility to access your money at any time, prefer a hands-off approach, or are building up savings gradually through regular monthly contributions. MMFs are also the better choice for your emergency reserve, regardless of how large your overall portfolio becomes.

Use both if you have enough capital to split: keep your liquid reserve in an MMF and put your committed savings in T-Bills. This is the approach that maximises both accessibility and returns across your short-term portfolio.

The most important step is to start. Leaving money in a low-interest savings account when both T-Bills and MMFs are available is the costliest mistake of all.

Disclaimer: Returns quoted in this article are indicative and based on historical market conditions. Actual yields change regularly. Always verify current T-Bill rates at www.centralbank.go.ke and compare live MMF yields from CMA-licensed fund managers before investing. This article is for educational purposes only and does not constitute financial advice. Consult a licensed financial advisor for personalised investment guidance.

Read also:

• How to Invest in Treasury Bills in Kenya
• Best Money Market Funds in Kenya
• How to Save Money in Kenya
• Best Investment Options in Kenya