Put a sum of money aside with a bank, agree not to touch it for a set number of months or years, and the bank pays you a fixed rate of interest for that specific stretch of time. At the end of it, you collect your original sum plus whatever interest built up. That is the entire mechanism. Most of what confuses people about fixed deposits sits in the details around this simple core idea, not in the idea itself.
The Three Things That Define a Fixed Deposit
Every fixed deposit is built from three numbers.
- Principal: the amount you put in.
- Tenor: how long the money stays locked, commonly anywhere from one month to a few years.
- Rate: the annual interest rate the bank agrees to pay you for that tenor.
The date your tenor ends is called maturity. Before that date, the deposit is not meant to be touched.
A Worked Example
Say Ama has GH¢2,000 she will not need for the next 12 months. Her bank offers, for illustration, 20% a year on a 12 month fixed deposit. Over the full year, her interest works out to GH¢2,000 × 20% = GH¢400. At maturity she receives her GH¢2,000 principal plus GH¢400 in interest, a total of GH¢2,400.
That 20% figure is only an example to show how the arithmetic works. Real rates differ from bank to bank and change over time, so always ask your bank for its current rate before you commit any money.
What Actually Happens When You Open One
In practice, opening a fixed deposit usually looks like this: you visit a bank (or use its app, where available), provide your identification and any other documents the bank requires, agree on the amount, tenor and rate, and the bank locks that sum from that date. You typically receive a certificate, receipt or statement confirming the terms, which is worth keeping.
What Happens at Maturity
When the tenor ends, you generally have a few options, depending on the bank: withdraw the principal and interest in full, let the deposit renew automatically into a new term at the bank's current rate, or add more money and start a fresh term. Banks differ on which of these happens by default if you do nothing, so it is worth confirming this at the point you open the deposit rather than assuming.
Fixed Deposit vs an Ordinary Savings Account
| Savings account | Fixed deposit | |
|---|---|---|
| Access to your money | Withdraw any time | Locked until maturity |
| Interest rate | Usually lower, can change | Fixed for the agreed term |
| Typical use | Everyday transactions, emergency access | Money you already know you will not need soon |
| Early access penalty | None | Usually a penalty or reduced interest |
Who Actually Uses a Fixed Deposit
People who already know when they will need a lump sum again, and who want a predictable, low-maintenance return in the meantime, tend to use fixed deposits. It suits money you have already set aside, not money you might need to reach for on short notice.
What to Understand Before You Commit Money
Three things are worth knowing upfront. Getting your money out before maturity almost always means giving up part or all of the interest on offer. A fixed rate can fall behind inflation, so the real value of your return depends on how prices are moving during your term. And fixed deposits are not the only low-risk option: Treasury Bills work differently and are worth comparing before you decide.
Frequently Asked Questions
Is a fixed deposit the same as a savings account? No. A savings account gives you access to your money at any time, usually at a lower rate. A fixed deposit locks your money for an agreed period at a fixed rate.
Can I add money to a fixed deposit after opening it? Generally no, not to the same deposit. Most banks require you to open a new fixed deposit if you want to invest more.
What happens if I do nothing at maturity? This depends on the bank. Some renew the deposit automatically at the current rate, others hold the funds until you give instructions. Confirm this when you open the deposit.
Is this financial advice? No. This article is educational only. Confirm current rates and terms directly with your bank before committing money.
This article covers the basics. If you want the fuller picture, including how to calculate your real return, compare offers properly, and decide how much to put in and for how long, Fixed Deposits in Ghana walks through the entire decision from start to finish.