How to Buy Treasury Bills in Ghana (And Why Your Savings Account is Losing)

Ama has GHS 3,000 sitting in a savings account. Her bank pays the mandated 5% per year. With current inflation at 3.7%, she thinks she’s doing just fine — her money is technically beating inflation. A colleague mentions Treasury bills in passing during lunch. Ama checks the current 91-day T-bill rate, sees it sitting around 4.99%, and brushes it off. Why jump through hoops to buy a T-bill when her bank account pays roughly the same 5%? But that evening, she does the actual math on taxes, fees, and safety guarantees. Her first reaction is genuine frustration. She was doing the responsible thing, but her savings account was quietly leaking value compared to the alternative. She just didn’t have the full picture.

And so it is with most of us. We are taught to save, but nobody ever explains the mechanics of what happens to that money while it’s sitting there. The problem isn’t that we are reckless with our money. The problem is that we are doing exactly what we’ve been taught, and nobody told us the rules of the game had changed.

Abɔfra hunu ne nsa hohoro a ɔne mpanyinfoɔ didi. This translates to: “When a child learns to wash his hands, he eats with adults.”Readiness earns access. Financial maturity knowing how the domestic money market actually works is how you wash your hands to sit at the table of actual wealth building.

The Real Talk on Your Savings

They taught us how to find the area of a circle but not how interest rates work, and somehow circle knowledge has been less useful in adult life. Your savings account is quietly losing value every year, and inflation is the reason because if prices are rising faster than your interest rate, your money is actually buying less even as the number grows.

“But wait,” you might say, “I’m keeping it in the bank because it’s safe! I don’t want to risk losing my hard-earned cash.”

Sorry, nope. You are already losing money. You just can’t see it on the statement.

Your savings account has had GHS 50 in it since 2021, and somewhere along the line you started calling it an emergency fund. You told yourself you’d start investing when the salary increases, the salary increased, and somehow you still haven’t started because the lifestyle also increased. There’s no shame in that. We’ve all been there. But today is the day we stop making excuses and start using the systems that are built to protect our purchasing power.

Let’s talk about the absolute foundation of investing in Ghana: the Treasury bill.

What is a Treasury Bill?

A Treasury bill (T-bill) is short-term government debt. You are essentially lending money to the Government of Ghana for 91, 182, or 364 days. In return, the government pays you back your initial money (the principal) plus a guaranteed amount of interest at the end of the period. The Bank of Ghana runs a weekly auction every Thursday to set the rates, and the rate you get depends on market demand that week. As of June 2026, the 91-day bill rate is sitting at around 4.99% annually, while inflation is currently at 3.7%. That means you still get a positive real return above inflation.

Here’s the thing about the government guarantee: it’s not just a nice promise. T-bills are backed by the full faith and credit of the Government of Ghana. This means the government is legally obligated to repay you. During the 2022–2023 Domestic Debt Exchange Program the worst economic crisis in decades the government restructured bonds but explicitly exempted T-bills. They protected T-bills because they are the foundation of the domestic money market, and restructuring them would have collapsed the financial system.

That is the strongest possible real-world evidence that T-bills sit at the top of the safety hierarchy in Ghana.

The Math is Simple

Most banks in Ghana use the Face Value Method for calculating your returns. You invest a fixed amount and receive your principal plus interest at maturity. Let’s run the numbers on what that actually looks like.

The formula is: Interest Earned = (Principal × Rate × Days) ÷ 365

Let’s say you invest GHS 10,000 for 91 days at the current rate of roughly 4.99%.
Interest = (10,000 × 0.0499 × 91) ÷ 365 = GHS 124.41.
Total at maturity = GHS 10,124.41.

Now, compare that to leaving it in your standard savings account. The bank pays you 5% annually. On paper, 5% looks identical to a 4.99% T-bill. But here’s the catch: bank interest is subject to an 8% withholding tax. The government taxes your bank interest, meaning your actual net return drops to 4.6%. Treasury bill interest, on the other hand, is 100% tax-free for individuals in Ghana. T-bills instantly beat the bank on the exact same amount of money.

Beyond the tax advantage, T-bills enforce discipline. You can’t easily withdraw and spend a T-bill on a Friday night impulse, whereas a savings account is just one MoMo transfer away from disappearing. Finally, if you’re saving more than GHS 6,000, bank deposits are only insured up to that limit by the NDIC. T-bills carry an unlimited government guarantee. Even when the rates look the same, the structure of a T-bill protects your money better.

And if you roll over your T-bill at maturity instead of withdrawing it? Your interest starts earning interest. If you reinvest that GHS 10,000 four times on 91-day bills at 4.99%, you don’t just make GHS 499 in simple interest. You make GHS 507.01 because of compound growth. It might look small initially, but the compound engine is running. The jollof will always be there whenever you’re ready for it, but compound interest doesn’t wait around for anyone.

How to Buy Treasury Bills in Ghana

This is the part where we stop talking about theory and go on offense. You don’t need a suit, you don’t need a relationship manager, and you don’t even need to walk into a bank branch if you don’t want to.

Here is exactly where to buy them, depending on your situation:

• Ecobank TBILL4ALL: Good for beginners and small amounts. Minimum investment is just GHS 5. You can do this entirely via mobile money.
• Fidelity Bank: Good for regular investors. Minimum is GHS 100. First purchase in branch, then you can use their mobile app.
• Your Primary Bank (GCB, GTBank, etc.): Best if you already have a strong banking relationship and prefer branch visits.
• Investment Firms (Databank, IC Securities): Best for larger amounts (GHS 1,000+) and building a broader portfolio.

The Ecobank TBILL4ALL Script

If you want to start right now from your couch, here is the exact step-by-step process using MTN MoMo:

1. Dial *770# from your MTN MoMo number.
2. Select “TBill4All” from the menu.
3. Choose your amount (anything from GHS 5 upwards) and duration (91, 182, or 364 days).
4. Confirm the transaction with your MoMo PIN.
5. You will receive an SMS confirmation, and your funds will be deducted from your wallet.

Remember that the Bank of Ghana conducts the auction every Thursday. Place your order between Monday and Wednesday. On Friday, the results are published, and your investment officially settles the following Tuesday. Set a reminder on your phone for 7 days before your maturity date so you can decide whether to reinvest or cash out.

Your future self is out there somewhere, either thanking you or shaking their head, and the small moves you make right now are what decide which one it turns out to be.

(Disclaimer: This is financial education, not financial advice. Always do your own research before making investment decisions.)

Frequently Asked Questions

Are Treasury bills tax-free in Ghana?

Yes. Interest earned on Government of Ghana Treasury bills is completely tax-free for individual investors. This is a major advantage over fixed deposits and savings accounts, which are subject to an 8% withholding tax on interest.

Can I lose money in Treasury bills?

Treasury bills are considered risk-free investments because they are backed by the Government of Ghana. There is zero risk of losing your principal amount in cedis. The only “risk” is inflation — if inflation is higher than your interest rate, your purchasing power drops, though currently, T-bill rates are beating inflation.

What happens if I need my money before maturity?

Treasury bills are designed to be held until the maturity date (91, 182, or 364 days). If you absolutely need the cash early, you can rediscount (sell) the bill in the secondary market through your bank or broker, but this usually comes with a penalty, and you will not get the full expected interest.

How much do I need to buy a Treasury bill in Ghana?

The minimum amount depends on the platform you use. With Ecobank’s TBILL4ALL via mobile money, you can start with as little as GHS 5. Through most investment banks like Databank, the minimum is around GHS 1,000. For some premium commercial banks, the minimum can be higher.

When is the Bank of Ghana Treasury bill auction?

The Bank of Ghana conducts the Treasury bill auction every Thursday. To participate in that week’s auction, you should place your order with your bank or broker by Wednesday afternoon.

Can I buy Treasury bills with Mobile Money?

Yes. You can buy Treasury bills directly using MTN Mobile Money by dialing *770# and selecting the TBILL4ALL option, which allows you to invest starting from just GHS 5.