What Interest Really Costs You

Someone once said compound interest is the most powerful force in the world. Whether he said it or not, the rich believe it. They make sure interest flows towards them. For most of our people, interest has only ever flowed away: to the furniture shop, the clothing account, the mashonisa. The machine is not complicated. It was just never explained to us. Let us explain it.

What it actually is

Interest is rent paid on money. Borrow money, and you pay rent on it every month. Save money, and the bank pays rent to you.

Compound interest means the rent gets charged on the rent. If you owe R1,000 at 20% per year and pay nothing, next year you owe R1,200. The year after, you owe interest on R1,200, not R1,000. Debt grows faster and faster. The same snowball works in reverse when you save: your interest starts earning its own interest.

The National Credit Act (NCA) caps what registered lenders may charge. The cap on unsecured loans moves with the repo rate, so check the current figure at ncr.org.za. In recent years the cap on unsecured credit has sat around 27% to 29% per year. Lenders may also charge a once-off initiation fee and a monthly service fee, and those are capped too.

Here is what a legal, maximum-rate loan really costs. Take R10,000 over 12 months at 27.75% per year, with the initiation fee and a monthly service fee added:

Item	Amount
Loan you receive	R10,000
Interest over 12 months	about R1,560
Initiation fee (once-off, capped)	about R1,200
Service fees (about R69 x 12)	about R830
Total you repay	about R13,600

You pay roughly R3,600 to use R10,000 for one year. More than a third of the loan.

Now run the same machine forwards. Instead of borrowing, you save about R960 a month (the same as that loan repayment) in a bank savings account at around 7% to 8%:

After	You have saved	Interest earned
1 year	about R11,500	about R450
3 years	about R38,500	about R3,900
5 years	about R70,000	about R12,400

Same monthly amount. In one direction it costs you R3,600. In the other, it pays you. That gap is the whole game.

How it is used against you

Hire purchase hides the real price. The advert says "TV: only R499 per month!" It does not say the cash price is R7,999 and the 24-month instalment total, with interest, service fees, delivery and forced insurance, comes to R12,000 or more. You paid R4,000 extra for a TV, and by month 24 it is worth R3,000 second-hand. Furniture and appliance credit is one of the biggest wealth drains in townships, by design.

Mashonisas (loan sharks) charge rates that are simply illegal. A typical mashonisa charges 30% to 50% per month. Borrow R1,000 at month-end, owe R1,500 by the next payday. Miss it, and you owe R2,250 the month after. Some take your SASSA card or bank card and PIN as "security", which is a crime. An unregistered lender is breaking the law, and a court can declare that loan agreement unlawful. Compare honestly:

	Mashonisa	NCR-registered lender
Interest	often 30–50% per month	capped by law, per year
Fees	whatever they decide	capped by law
Keeps your card or ID	often, illegally	never allowed
Written agreement	rarely	required by law
Someone to complain to	nobody	NCR, Credit Ombud, courts

"Low monthly instalments" is a sales trick, not a price. Salespeople are trained to talk monthly amounts because R499 sounds small and R12,000 sounds like what it is. Always ask for the total you will pay by the end.

Insurance and extras get bolted on quietly. Credit life insurance, "customer protection plans", delivery fees, extended warranties. Some are legal, but you often have the right to use your own insurer or refuse extras. They rely on you signing without reading.

How to use it instead

1. Demand the paper the law forces them to give you. Under the NCA, before you sign, a lender or shop must give you a free pre-agreement statement and quotation showing the interest rate, all fees, the monthly instalment and the total cost of credit, the full amount you will repay. The quote stays valid for five business days, so you can take it home, sit at the kitchen table and compare. If they will not give it, walk out. That refusal tells you everything.

2. Ask one question every time: "What is the total I will have paid at the end?" Then divide the extra cost by the cash price. R12,000 total on a R7,999 TV means you are paying 50% more. Say it out loud. It changes decisions.

3. Use lay-by for things that can wait. Lay-by (paying the shop in instalments and taking the item once it is paid off) charges no interest and needs no credit check. The Consumer Protection Act protects your money: if you cancel, the shop must refund you, and may only keep a small cancellation penalty of 1%. A R2,000 school uniform on lay-by costs R2,000. On a store account it can cost R2,500.

4. Check every lender at the NCR before you borrow. Registered lenders appear on the register at ncr.org.za. Two minutes on your phone. No registration number, no loan.

5. Kill the most expensive debt first. List every debt with its interest rate. Pay minimums on everything, then throw every spare rand at the highest rate (usually the mashonisa or store account, not the biggest balance). Each debt you kill frees up money to kill the next one faster. This is compounding working for you.

6. Build a small buffer so emergencies stop feeding the machine. Most mashonisa loans are for emergencies: a funeral, a school fee, month-end. Even R100 a month into a separate account, or a well-run stokvel, is you becoming your own lender. The interest you do not pay is money you earned.

7. Save where interest compounds for you. A bank fixed deposit or a tax-free savings account (you can put in up to R36,000 a year tax-free; check the current limit at sars.gov.za) pays you the rent instead. R10,000 left in a tax-free account at 8% becomes about R14,700 in five years and about R21,600 in ten, without you adding a cent.

Interest is not evil. It is a machine. The only question is which end of it you are standing on.

Where to go

• National Credit Regulator (check registered lenders, report mashonisas, complaints): ncr.org.za or 0860 627 627
• Credit Ombud (free help with credit disputes): creditombud.org.za or 0861 662 837
• National Consumer Commission (lay-by and Consumer Protection Act complaints): thencc.org.za or 012 428 7000
• SARS (tax-free savings rules): sars.gov.za