Credit card interest in Singapore is charged only when you pay less than the full statement balance by the due date. Pay in full and you pay no interest at all. Pay anything less, even the minimum, and the main banks charge an effective rate of about 27.8% to 27.9% a year, worked out daily from the date of each purchase.
This guide explains how that happens, using MoneySense and the banks’ own cardholder agreements and fee schedules, as at November 2026. The worked examples use our own figures.
The short version: The interest-free period only works if you clear the whole bill. Leave even $100 unpaid and interest can be charged on every purchase from the day you made it, plus a $100 late fee if you miss the minimum.
How the Interest-Free Period Works
Each month the bank sends a statement with a payment due date. The gap between the two is your interest-free period. DBS says you have 25 interest-free days. Citibank lists a 25-day repayment grace period from the statement date. Standard Chartered gives at least 22 days, and CIMB 23 days.
The catch is in CIMB’s wording: the interest-free period applies only “if bills are paid in full by the payment due date each month and there is no balance carried forward”. MoneySense makes the same point: interest is also charged on new purchases until full settlement is received.
How Credit Card Interest Is Charged When You Pay Less Than in Full
DBS’s cardholder agreement says that if you do not pay the entire balance, interest of 27.8% a year is charged daily on each transaction in the statement “from the date such transaction was effected”, and on new transactions from their own dates, even though they are not yet due. Citibank’s pricing guide says interest is charged daily on all transactions in the current and next statement from the transaction date.
So a small shortfall is not charged interest on the shortfall alone.
Worked example (illustration only). You charge $2,000 in a month and pay $1,900 by the due date. Assume the 27.8% rate (about 0.067% a day), purchases made on average 30 days before you paid, and the last $100 cleared 30 days later.
- Interest on $2,000 for 30 days: about $40.
- Interest on the remaining $100 for 30 days: about $2.
- Total: roughly $42, against $0 had you paid the full $2,000.
Your bank’s exact method is in its agreement and on the statement. Every card bill must state how finance charges are computed under MAS’s card regulations.
The Minimum Payment Rule and Why It Costs So Much
The minimum payment is the least you must pay to avoid a late fee. Banks set it differently:
- UOB and CIMB: 3% of the balance or $50, whichever is higher, plus any overdue amount.
- Citibank and Standard Chartered: 1% of the balance plus interest, fees and charges, or $50, whichever is higher.
MoneySense notes that the minimum goes towards interest first. Its own example, a $5,000 debt at 25% a year repaid at the minimum, takes 175 months (14.5 years) and costs almost three times the original debt.
Our worked example (illustration only). A $2,000 balance, no new spending, interest at 27.8% a year applied monthly, and a minimum payment of 3% or $50:
- Paying only the minimum: about 76 months (6 years 4 months), with roughly $1,870 of interest.
- Paying a fixed $200 a month: 12 months, with roughly $260 of interest.
You do not have to work this out yourself. MAS’s card regulations require banks to show on your next bill, if you did not pay the last one in full, how long the minimum would take to clear the balance and what it would cost in total.
Late Fees, Penalty Rates and What Happens Next
Miss the minimum by the due date and the main banks charge a late fee of $100. CIMB charges $80 on its AWSM Card and $150 on its Founders Card. MoneySense describes the fee as often “a flat $100, regardless of the size of the bill”.
The interest rate can also rise:
- DBS: 30.8% a year, back to 27.8% after three consecutive minimum payments on time.
- Citibank: 30.9% while the account is past due.
- CIMB: 29.9% until the minimum is paid in full.
- UOB: an extra 3% a year until two consecutive minimum payments are made.
There are minimum interest charges too: S$2.50 at DBS and CIMB, S$3 at UOB and Citibank.
Longer arrears have wider effects. MoneySense says that missing the minimum for two consecutive months means you cannot get new unsecured credit, your overdue credit lines are suspended and your credit score can suffer. Our guide to the credit score in Singapore explains how late payments show up on your report.
Cash Advances Cost More From Day One
A cash advance is cash drawn on your credit card. There is no interest-free period: interest runs from the day you withdraw. On top of that, the main banks charge a fee of 8% of the amount or $15, whichever is higher.
Worked example (illustration only). Withdraw $500 and repay it a month later at 28.5% a year: the fee is $40 and the interest about $10. Borrowing $500 for one month costs roughly $50.
Credit Card Interest and Charges at the Main Banks
Figures from each bank’s own page or fee schedule, as at November 2026. Rates are effective rates a year.
| Bank | Interest on purchases | Interest-free period | Minimum payment | Late fee | Cash advance fee | Cash advance interest |
|---|---|---|---|---|---|---|
| DBS | 27.8% | 25 days | As shown on statement | $100 | 8% or $15 | 28.5% |
| UOB | 27.8% | Not stated in UOB’s summary | 3% or $50, plus overdue | $100 | 8%, min $15 | 28.5% |
| Citibank | 27.9% | 25 days | 1% plus interest and fees, or $50 | $100 | 8% or $15 | 27.9% |
| Standard Chartered | 27.9% | At least 22 days | 1% plus interest and fees, or $50 | $100 | 8%, min $15 | 29.9% |
| CIMB | 27.8% | 23 days | 3% or $50 | $100 on most cards | 8%, min $15 | 28% |
| HSBC | 27.8% | See HSBC’s tariff | See HSBC’s tariff | $100 | 8% or $15 | 28.5% |
No reward rate on any card comes close to 27.8%. If you are comparing cards on our best credit cards in Singapore page or in the full card table, the rewards only count if you pay in full every month.
What To Do Next
- Set up GIRO for the full statement amount, not the minimum. It is the simplest way to keep the interest-free period.
- If you cannot clear the bill, pay as much as you can above the minimum. The debt payoff calculator shows how fast a fixed monthly amount clears a balance.
- If you already carry a balance, compare the cost of a balance transfer with your card’s 27.8% to 27.9%, including the transfer fee.
- If you were charged a late fee for the first time in a while, ask the bank about a goodwill waiver. Our guide on how to ask for a fee waiver covers each bank’s channel.
- If debts across several lenders are hard to manage, MoneySense lists free help, including Credit Counselling Singapore.
