The Effective Interest Rate (EIR) is a key concept in personal loans that helps you see the true cost of borrowing in Singapore.
Unlike the nominal rate you see in advertisements, the EIR includes all mandatory fees and considers the way you repay your loan, so you can better compare offers from different banks and lenders.
Most personal loans are promoted with a low nominal (advertised) interest rate, but your real borrowing cost goes beyond just the rate on paper.
The EIR includes upfront charges (like processing, administrative, or origination fees) that are not reflected in the nominal rate, making EIR typically higher.
Compounding effects matter: EIR factors in how often the interest is calculated—monthly, annually, or otherwise—which impacts the real interest you pay.
As you repay your loan, your outstanding principal reduces each month. EIR is calculated based on this reducing balance, meaning you don’t get the full benefit of the total loan amount throughout the entire tenure—unlike the assumption made by the nominal rate.
Because of these elements, EIR gives a more accurate reflection of your true borrowing cost than the headline rate found in advertisements.
Here’s a summary of how the two rates compare for personal loans in Singapore:
Feature | Advertised/nominal Rate | Effective Interest Rate (EIR) |
Primary use | Marketing and basic interest calculation | Comparing the true cost across different lenders |
Includes fees? | No | Yes (processing, admin, or origination fees) |
Compounding | Often ignored | Fully accounted for |
Calculation basis | Usually on original principal (flat rate) | On reducing principal balance |
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Use the EIR as your primary filter when comparing personal loans from different banks and licensed moneylenders in Singapore. This standardises the total borrowing cost, even if each lender structures their fees differently.
Don’t just chase the lowest EIR. While a lower EIR suggests a cheaper loan, the total amount you pay may still be higher if you pick a longer loan tenure.
Always check the total payable amount alongside the EIR; sometimes, a slightly higher EIR with a shorter tenure results in less interest paid overall.
In Singapore, the Monetary Authority of Singapore (MAS) requires all lenders to clearly disclose the EIR in their marketing materials, terms, and contracts. If the EIR isn’t presented upfront, consider it a red flag.
Look for this disclosure in all loan offers. Checking both the EIR and fee breakdown ensures you make a transparent, apples-to-apples comparison—so you don’t get surprised by hidden costs.
DBS Personal Loan – Interest rate from 1.48% p.a. (EIR from 3.22% p.a.); processing fee from 1%. Early repayment incurs a S$250 fee.
UOB Personal Loan – Interest rate from 1.00% p.a. (EIR from 1.93% p.a.); no processing fee for all tenures. Early repayment incurs S$150 or 3% of outstanding loan.
Actual rates are subject to personal credit assessment. Always review the latest EIR, fees, and full product details before applying.
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