If you have ₦500,000 sitting in a regular savings account right now, it’s losing value. Nigerian bank savings accounts still pay a fraction of what inflation eats every year, and the two safest alternatives — Treasury Bills and Money Market Funds — both beat that by a wide margin. The real question isn’t whether to move the money. It’s which of the two to move it into.
Short answer: if you won’t need the money before a fixed date, Treasury Bills lock in a known, government-backed rate. If there’s any chance you’ll need part of it sooner, a Money Market Fund gives you nearly the same safety with the ability to withdraw in a day or two. Plenty of people split the difference rather than pick one.
What each one actually is
Treasury Bills (T-Bills) are short-term loans to the Federal Government through the Central Bank of Nigeria. You buy at a discount, and the government pays back full face value when the bill matures — in 91, 182, or 364 days. The rate is fixed the moment you buy and doesn’t move afterward. At the CBN’s September 9, 2026 auction, stop rates were 16.30% on the 91-day bill, 16.50% on the 182-day, and 16.62% on the 364-day — down from over 17.5% earlier in the year, as the CBN has now cut rates three auctions in a row.
Money Market Funds (MMFs) are pools of money run by an SEC-licensed fund manager, spread across Treasury Bills, commercial paper, and short-term bank placements. There’s no fixed term, and most platforms let you withdraw within 24–48 hours. Because the underlying rate isn’t fixed, published MMF yields have recently ranged roughly 12%–20%+ depending on the manager and platform. Treat any specific number you see quoted — including the ones here — as a snapshot rather than a promise, and check the fund’s current factsheet before committing money.
The ₦500,000 example
Say you have ₦500,000 you won’t need for the next 12 months, but you’d feel better if part of it were reachable in an emergency.
- All in a 364-day T-Bill at 16.62%: roughly ₦83,100 in interest over the year, but the money is locked until maturity — selling early means the secondary market, at whatever price is on offer that day.
- All in an MMF averaging around 16%: a similar ₦80,000 or so, but you could pull some or all of it within a couple of days if something real came up.
- Split ₦300,000 into a T-Bill and ₦200,000 into an MMF: you lock in a known return on the portion you’re confident you won’t touch, and keep the rest genuinely liquid — which is closer to how most people actually use an “emergency fund.”
Don’t hold me to the exact naira figures — the point is the shape of the trade-off, not a forecast.
How they actually compare
On safety, both sit near the top: T-Bills carry the direct backing of the Federal Government, while MMFs are regulated by the SEC and typically hold a large share of government instruments themselves — one step removed, not a different risk category. On liquidity, MMFs win outright; T-Bills lock your money for the full tenor. On minimum entry, MMFs are far more accessible — some platforms let you start with ₦1,000–₦5,000, while T-Bills through most banks start around ₦100,000. On predictability, T-Bills win: you know the exact return the day you buy, while an MMF’s return depends on how the fund performs over the period. And on where you buy, T-Bills come through banks or the CBN’s auction process, while MMFs are available through platforms like Cowrywise, PiggyVest, Bamboo, and Risevest, or directly through a fund manager.
One more point worth knowing: interest on FGN securities like Treasury Bills has generally been treated as tax-exempt for individuals, though it’s worth confirming current treatment with your bank or FIRS rather than assuming it applies to your exact situation. MMF tax treatment varies by fund structure — ask the fund manager directly.
Risks and caveats
Neither of these is risk-free the way cash under a mattress feels risk-free. Both carry inflation risk — if inflation runs hotter than your return, you’re still losing real value. T-Bills carry reinvestment risk: when your bill matures, the next round’s rate could be lower, which is exactly what’s been happening the last few auctions. MMFs carry fund-manager and market risk — a stated yield today isn’t a guarantee for the year ahead. Before putting money into any MMF, confirm the platform or fund manager is genuinely SEC-registered by checking SEC Nigeria’s list directly, not just taking the platform’s word for it.
What to do next
Figure out first whether there’s a real chance you’ll need part of this money in the next 3–6 months. If yes, that portion belongs in an MMF, not a T-Bill. Whatever’s genuinely spare beyond that can go into a T-Bill at whichever tenor matches how long you’re comfortable waiting.
Related NairaSeed resources:
- How to Invest in Treasury Bills in Nigeria (2026 Guide for Beginners)
- Beginner’s Guide to Investing in Nigeria Without Losing Sleep
- Dollar vs Naira Savings: Where Should Nigerians Keep Their Money in 2026?
- How to Build a 6-Month Emergency Fund in Nigeria (Even on a Small Salary)
FAQ
Can I lose money in a Money Market Fund?
It’s rare for a well-run naira MMF to post a negative return over a full year, since the underlying assets are short-term and low-risk, but you can still come in below the advertised figure once fees are accounted for. It isn’t the same as a government guarantee.
Is it better to buy Treasury Bills directly or through an app?
Buying through a bank or the CBN’s auction usually avoids an extra layer of fees but needs the full minimum upfront. Apps that offer T-Bill access lower the entry amount but may take a spread — compare what you’re actually credited, not just the headline rate.
Sources: CBN Treasury Bills primary auction results (Nairametrics reporting, September 2026); Debt Management Office Nigeria; SEC Nigeria registered-operator listings; multiple 2026 Nigerian personal-finance publications on current MMF yield ranges.
Disclaimer: This article is for financial education, not personalized investment advice. Rates change frequently — confirm current figures with your bank, the CBN, or your fund manager before investing.
Try it yourself: use the Money Market Fund vs Treasury Bill Calculator to run this with your own numbers.
Related reading: Not sure whether to invest, save, or pay off debt first? See I Have ₦500,000. Should You Invest It, Save It, or Use It to Clear Debt?.
Related reading: Working with a larger amount? See I Have ₦1 Million. What Should I Do With It?.
Related reading: For the general version of this question, see Should You Pay Off Debt or Start Investing?.
Related reading: Wondering where your emergency fund itself should actually sit? See Should You Keep Your Emergency Fund in Cash or a Money Market Fund?.
Related reading: Not sure which instrument fits your timeline? See Where Should You Put Your Money for 6 Months, 1 Year, or 5 Years?.
