Start with the total, not the weekly number
“Only S$44.90 a week” sounds easier to absorb than “S$8,620.80 over four years.” But those figures describe the same example in MoneySense’s guide to instalment plans: a television discounted to S$5,200 and financed at S$44.90 a week for 48 months. Using the guide’s four-weeks-per-month calculation, the total repayment is S$8,620.80—S$3,420.80 above the cash sale price.
The monthly figure is not false. It is incomplete. A useful comparison starts with the cash price, the full amount repayable, the repayment period and all charges. Then ask whether the purchase is still worth making at the total cost.
“Interest-free” can describe only one part
MoneySense distinguishes between plans offered directly by a merchant and instalment plans offered by a credit-card company with a merchant. The merchant’s in-house plan may charge flat-rate interest. MoneySense’s guide describes typical rates of 11% to 27% a year and repayment terms of up to 72 months for these plans. A credit-card instalment plan may be interest-free if every instalment is paid in full and on time, but missing a payment can trigger credit-card interest.
The label on the advertisement is not enough to identify the arrangement. Read the plan agreement and find out who is lending the money, who receives your payment, and whether the quoted amount includes interest, fees or an early-settlement charge.
The merchant and lender may be different
With a credit-card instalment plan, your repayment obligation is to the card issuer. MoneySense notes that the instalments may still be due even if the merchant later closes. Refunds or exchanges may also be restricted once the bank approves the plan, and the unpaid amount is still a debt in your name.
This is why a return policy and a financing offer should be checked separately. A merchant’s promise to fix, replace or refund a product does not automatically cancel a separate obligation to a card issuer. Ask the issuer how a return or cancellation affects the balance before agreeing to the plan.
A simple comparison checklist
Before accepting an instalment offer, write down:
- the cash price today;
- the amount of each payment and how often it is due;
- the number of payments and total repayment;
- the interest rate and whether it is flat or calculated on a reducing balance;
- late fees, early-repayment penalties and other charges;
- what happens if you return the item or the merchant stops operating.
For a card plan that claims to be interest-free, check the payment due date and what happens if a payment is late. For an in-house plan, compare the full repayment with the cash price and a separate loan’s effective interest rate, if borrowing is still necessary.
Ask whether the purchase fits the budget
An instalment turns one purchase into a string of future claims on your income. Add the proposed payment to existing loan, card and household commitments for every month of the plan—not only the first month. If the plan leaves no room for an unexpected bill, the item is not affordable at that payment, even if the application is accepted.
Saving first is usually clearer: set aside money toward the purchase, then pay from funds you already have. If you do use financing, choose it based on the total cost and terms, not the smallest number in the advertisement.
Sources
- MoneySense: The real cost of instalment payment plans — official worked example and plan terms; verified 15 Oct 2026.