Buying a Treasury Bill in Ghana is a genuinely simple process once you understand it, but a handful of avoidable mistakes come up often enough among first-time investors to name directly. None of them are complicated to avoid once you know to look for them.
1. Treating the Quoted Rate Like a Simple Annual Savings Rate
A savings account typically adds interest onto your balance periodically, expressed as an annual rate you can apply directly. A Treasury Bill's quoted rate feeds into a discount formula, applied over the specific number of days in your chosen tenor, not automatically over a full year. Confusing the two leads to overestimating what a shorter tenor will actually pay. Always run the actual calculation for your specific tenor.
2. Assuming Large Wholesale Figures Apply to You
Official documents sometimes mention a GH₵500,000 minimum bid for primary dealers, the large institutions permitted to bid directly at the Bank of Ghana's auction. This figure describes the wholesale level your bank or broker operates at on your behalf; it is not a minimum you personally need to meet. See our step-by-step buying guide for what an individual actually needs.
3. Investing Money You Already Know You'll Need Soon
Early exit before maturity is usually possible, through your bank, broker, or the Ghana Fixed Income Market, but it typically costs some of the return you would have earned holding to maturity. If there is a real chance you will need a specific sum before your chosen tenor ends, that money is generally better kept somewhere fully liquid rather than locked into even a short T-bill.
4. Not Deciding a Maturity Instruction in Advance
If a standing rollover instruction is in place and no further action is taken, your investment is automatically reinvested at whatever rate the next auction produces, which could be higher or lower than your current rate. Deciding in advance, full payout, interest out with principal rolled over, or full rollover, keeps this outcome under your control rather than leaving it to chance.
5. Assuming Every Government Security Carries the Same Protection
Treasury Bills were fully excluded from Ghana's 2022 to 2023 Domestic Debt Exchange Programme and paid in full; individual government bondholders were not protected the same way. Never assume a Treasury Bill and a government bond behave identically in a crisis just because both involve lending to the same government. Our risk article covers this fully.
6. Not Asking About Fees Before Committing
Practices vary between banks and brokers on whether a handling fee applies to a Treasury Bill purchase. It is a fair, ordinary question to ask more than one institution before deciding where to go, and costs nothing to ask.
7. Forgetting the Maturity Date Entirely
A Treasury Bill's fixed term is one of its advantages, but only if you actually track the date. Write it down somewhere you will genuinely see again, a phone reminder or a calendar entry, and decide your next move before it arrives rather than being caught by surprise.
FAQ
Is any of this a sign that Treasury Bills are risky or complicated? No. Every mistake above is easy to avoid once named, and the underlying product remains a genuinely simple, well-documented, low-risk instrument.
Which mistake is the most costly? Investing money you will need before your tenor ends is usually the most consequential, since it can mean giving up return you were counting on right when you need the full amount most.
Where can I see the complete step-by-step process to avoid these mistakes from the start? Our step-by-step buying guide walks through the full process with two worked examples.