Your bank balance can look perfectly healthy while its buying power shrinks. That is what dead money is: cash that sits still while prices rise around it.
The math of a slow death
Suppose you keep ₦1,000,000 in an account that pays almost nothing for a year. Nigeria's headline inflation was 15.39% in August 2026. If prices rise by that amount over the year, your ₦1,000,000 buys only what about ₦866,600 buys today. You lose roughly ₦133,000 of purchasing power, and your balance never shows it.
The same thing happens in any currency, just at different speeds. Where inflation is 3% or 4%, idle cash still loses meaningful value over ten years.
The real return formula
Here is a rough rule anyone can use:
Real return ≈ interest rate − inflation rate
- Earning 5% with 15% inflation: about −10% a year. Your money is losing value.
- Earning 18% with 15% inflation: about +3%. Your money is growing in real terms.
- Earning 4.5% with 3% inflation: about +1.5%. Your money is growing slowly.
Where dead money hides
- Current accounts holding far more than a month's expenses.
- Cash at home, which earns nothing, can be stolen, and loses value to inflation.
- Old accounts you have forgotten about, including dormant balances and unused wallet or app balances.
- Money waiting for "the right time" that sits idle for years while you wait.
How to bring it back to life
1. Keep an emergency fund, but keep it earning
Hold three to six months of expenses in something you can access quickly but that still pays interest, such as a high-yield savings account or a money-market fund. In the U.S., high-yield savings accounts were paying up to about 4.5% in September 2026. In Nigeria, money-market funds and short-term Treasury bills have typically paid far more than ordinary savings accounts. Rates are shifting after the CBN's latest cut, so compare current yields before you commit.
2. Match the money to when you'll need it
Money you need within a year should be in safe, liquid places. Money you won't touch for five years or more can go into assets that aim to beat inflation over time, which means accepting some ups and downs.
3. Automate it
Set up an automatic transfer on payday into savings or investments. Money that is moved automatically is less likely to be spent or left idle.
4. Review every quarter
Interest rates and inflation change. Your plan should be checked regularly, at least every three months.
The bottom line
Cash is useful for emergencies and short-term needs. Beyond that, idle cash steadily loses value. Check how much of your money is sitting still, and put what you don't need soon somewhere it can earn.
Money Cemetery publishes general financial education, not personal financial advice. Figures were checked on September 23, 2026 and can change quickly. Consider speaking with a licensed adviser before making decisions about your own money.
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