You just got ₦500,000 — a bonus, a side-hustle payout, a salary arrears clearance, whatever the source. Now you’re staring at three options: invest it, save it, or use it to clear a debt. Most people freeze here, or worse, do nothing and let it quietly disappear into daily spending. There’s a straightforward order to work through this in.
Short answer: cover any emergency-fund gap first, then compare your debt’s interest rate against what you could realistically earn investing — if the debt costs more than the investment pays, clear the debt first. Only once both of those are handled does “invest it” become the right next move for money you won’t need soon.
Step 1: Do you actually have an emergency fund?
Before anything else, check whether you have at least a small buffer — ideally a few months of essential expenses — sitting somewhere reachable. If you don’t, some of this ₦500,000 should go there before it goes anywhere else. Money that’s earning 18% in an investment doesn’t help you if the only way to cover a real emergency is a loan app charging you 10% or more a month.
Step 2: What is your debt actually costing you?
This is the step people skip, and it’s the one that matters most. Not all debt is equal. A car loan or a low-rate bank loan might cost you 15–25% a year — in the same range as what a good investment could earn you, which makes the decision closer. But loan-app and quick-cash debt is a different story: many Nigerian loan apps charge monthly rates of 2%–15%, and some considerably more, which works out to APRs well above 30%, in some cases into the hundreds of percent once fees are included. No Treasury Bill or money market fund realistically beats that.
The rule is simple: if what your debt costs you every year is higher than what you could realistically earn investing, paying it off is the better trade — it’s a guaranteed return equal to the interest rate you stop paying. If your debt is cheap relative to investment returns, you have more room to consider investing instead, or splitting the money.
Step 3: How soon might you need this money?
If there’s a real chance you’ll need part of this ₦500,000 in the next few months — rent, a planned expense, anything specific — that portion shouldn’t go into anything illiquid. This is where a Money Market Fund earns its place: it gives you a return well above a savings account while keeping the money reachable within a day or two. Money you genuinely won’t need for a year or more has more options, including Treasury Bills or other investments.
Putting it together with ₦500,000
Say you have no emergency fund, ₦150,000 in loan-app debt costing roughly 8% a month, and the rest is genuinely spare. A reasonable split: clear the ₦150,000 debt immediately — that alone is the equivalent of a guaranteed ~96% annual return, nothing else on this list touches that. Put ₦100,000 into an emergency buffer you can reach quickly. Invest the remaining ₦250,000 for a year or more, split between a Money Market Fund for flexibility and a Treasury Bill for the portion you’re confident you won’t touch.
Your own numbers will differ — the framework is what to keep, not this exact split.
When it’s genuinely close
If your only debt is something reasonably priced — a bank loan under roughly 20% a year, say — and you already have an emergency fund, the decision gets closer to a toss-up, and either choice is defensible. In that situation, paying off debt still has one advantage worth weighing: it’s a guaranteed outcome, while an investment return is not.
Risks and caveats
This framework assumes you can be honest with yourself about what your debt actually costs — check the real APR, not just the headline monthly rate, since fees and compounding can make a loan far more expensive than it first looks. It also assumes any investment return you use for comparison is realistic and current, not an optimistic number from a platform’s marketing page. And an emergency fund isn’t optional in this framework — skipping it to chase a higher return is how people end up back in expensive debt a few months later.
What to do next
Work through the three steps above in order: emergency fund, debt cost versus investment return, then time horizon. If investing comes out ahead for some or all of the money, use the calculator below to see what a Money Market Fund or Treasury Bill could realistically earn on your amount.
Related NairaSeed resources:
- How to Get Out of Debt in Nigeria: Step-by-Step Plan
- How to Build a 6-Month Emergency Fund in Nigeria (Even on a Small Salary)
- Money Market Funds Explained: How They Work in Nigeria
- Money Market Funds vs Treasury Bills: Where Should You Keep ₦500,000 in Nigeria?
- Money Market Fund vs Treasury Bill Calculator
FAQ
Should I ever invest while I still have debt?
Only if the debt is genuinely cheap relative to what you’d earn investing, and you already have an emergency fund. For high-cost loan-app debt, paying it off first is almost always the better math.
What counts as a good emergency fund before I start investing?
There’s no single right number, but a few months of essential expenses, kept somewhere reachable within a day or two, is a reasonable starting point before you commit money to anything longer-term.
Sources: Nairametrics reporting on Nigerian loan app interest rates (2026); FCCPC-approved digital lending platform data as referenced in Nigerian fintech and personal-finance publications.
Disclaimer: This article is for financial education and does not constitute personalized financial advice. Your own debt terms, emergency-fund needs, and investment options should be checked directly before you decide.
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: Got a bonus or windfall instead of a fixed amount saved? See What Should You Do With Your Bonus or Extra Income?.
