Alwin Goh
An AI tool recommends a miles card for your next purchase. The rate looks attractive, and the answer arrives faster than you could search several banks’ websites. Can you rely on it?
AI can help you choose which card to use. Before acting on its answer, check that the reward rules apply to your transaction and that enough bonus allowance remains. Even an accurate merchant match can produce the wrong choice when your spending history is missing.
In September 2026, The Straits Times reported on KiasuMiles, an AI tool developed in Singapore to help compare credit card rewards.
The practical question is whether its recommendation still holds for the purchase you are making today. This guide uses project documentation and official bank terms checked in September 2026. It does not include a live test of KiasuMiles’ recommendation accuracy.
Table of Contents
Quick Summary: What To Verify
Use the following checks before switching cards for a purchase. An unresolved condition is a reason to investigate further, especially when the amount is large.
| Check | What You Need To Establish |
|---|---|
| Rule Date | The terms apply on the relevant date, including any promotion period. |
| Qualifying Spend | You meet the required spend and any additional conditions. |
| Remaining Cap | Enough bonus reward capacity remains in the correct category. |
| Payment Route | Your exact way of paying qualifies for the stated rate. |
| Exclusions | The transaction is eligible under the bank’s definitions. |
| Repayment | You have set aside enough money to pay the statement bill. |
What AI Can Help You Compare
AI tools can make scattered reward rules easier to compare. They are particularly useful when you already hold several cards and want to decide which one to use at a specific merchant.
According to KiasuMiles’ project documentation, it ranks the cards supplied for a lookup using a maintained card and merchant database. The lookup itself does not perform live web searches. Its documentation also cautions that confidence ratings and “last verified” dates do not guarantee that every rule or merchant classification is current.
A confident answer can therefore rely on an older rule or an uncertain transaction category. Check the supporting information before accepting the result.
There is also a difference between choosing a card from your wallet and choosing a new card to apply for. The first concerns one purchase. The second requires a wider review of your normal expenses, annual fees, redemption plans and ability to manage another bill.
A merchant recommendation alone cannot establish whether a new card suits you over a year.
Five Checks Before You Follow A Recommendation
1. Check The Source And Effective Date
Open the bank’s official product page and linked reward terms. Look for the effective date of the rule, rather than relying only on when a comparison article was published.
A notice announcing a future change and the terms that apply today may both appear online. Make sure the tool has used the version relevant to your purchase. For a promotion, check its start and end dates, registration requirements and qualifying transaction period.
Save the relevant document or a dated screenshot if you are planning a substantial purchase. Keep the official URL with your record so you can revisit the conditions later.
If the product page and detailed terms appear inconsistent, ask the bank which conditions apply before counting on the bonus.
2. Verify Minimum Spend And Additional Conditions
Minimum spend is the qualifying amount required for a reward. Minimum payment is the smallest repayment required on your credit card bill. They answer different questions, and neither should be used as a substitute for the other.
Look beyond the amount itself. Check which transactions count, which period is used and whether the card imposes another requirement.
For example, as of September 2026, the DBS yuu Card reward conditions require at least S$800 in eligible card spend and transactions at four different participating merchants per calendar month for the additional 13% bonus cash rebates. DBS advertises combined rewards of up to 10 miles per S$1, subject to the programme’s conditions and caps.
The merchant count follows DBS’ defined groups. Cold Storage, CS Fresh and Jasons Deli belong to one participating merchant group, so shopping at all three does not fulfil three of the four required groups.
Use the bank’s definition of qualifying spend to build your total. Do not assume every item on your statement helps you meet a reward threshold.
3. Calculate The Cap Remaining In The Right Category
The headline rate may apply only until a bonus cap is reached. Check whether the cap is expressed in spending, points, miles or cashback, and whether it applies to one category or several combined.
Under the UOB Preferred Visa Card terms, as of September 2026, selected online transactions and mobile contactless transactions each have a separate bonus cap of UNI$1,080 per calendar month. The cap is measured in bonus points, so converting it into a spending allowance requires the bank’s earning formula.
Do not subtract total card spending from a cap that covers only one category. Keep each reward category separate and account for purchases that have not yet appeared in your tracker.
The useful comparison is how many rewards this next purchase can earn after earlier spending has used part of the allowance.
4. Match The Merchant And Payment Method
A merchant category code, or MCC, identifies the type of business for card processing. A retailer’s familiar name is not enough to establish how a particular transaction will be classified.
Check the outlet and payment route when they matter. Paying directly, through an app or through a payment intermediary may require different checks under the card’s rules.
UOB’s terms distinguish an in-person mobile wallet tap from a mobile wallet payment made inside an app. For this card, Apple Pay, Google Pay and Samsung Pay payments made within an app do not fall within its defined mobile contactless category.
Also review the exclusions. Search the terms for relevant MCCs, merchant descriptions, wallet top-ups, bill payments, recurring charges or instalment arrangements. The purpose is to establish what happens to your transaction; a broad statement that a card rewards shopping is not enough.
When the MCC is uncertain, ask the bank what it can confirm. Avoid treating an estimated classification as a guaranteed bonus.
5. Check Posting, Refunds And Reward Timing
Keep the purchase date and posting date separate in your records. Check which one the bank uses for the qualifying period, particularly near the end of the month.
UOB’s terms warn that late posting can affect bonus eligibility and provide for reward adjustments after reversals or returned purchases.
Record refunds against the original purchase so your tracker does not continue treating that spend as settled. If a refund affects a threshold, ask the bank how it changes your qualifying total.
Finally, check when bonus rewards should arrive. A missing bonus immediately after payment is not necessarily an error; compare the actual crediting date with the programme’s stated schedule.
A Worked Example: Compare The Whole Purchase
Suppose you plan to make a S$300 purchase. In this simplified hypothetical example, Card A earns four miles per S$1 on eligible spending but has only S$100 of spending left that qualifies for its bonus. Card B earns two miles per S$1 across the entire purchase.
Assume Card A earns 0.4 miles per S$1 after its bonus allowance is used up. All eligibility conditions are met, and rounding, fees and redemption differences are excluded.
| Card | Calculation | Total Miles |
|---|---|---|
| Card A | S$100 × 4, plus S$200 × 0.4 | 480 |
| Card B | S$300 × 2 | 600 |
Card B earns more on the whole purchase even though its advertised rate is lower. The calculation changes if the remaining allowance, base rate or transaction eligibility changes.
For a real comparison, ask the tool to show the calculation across the full amount. Then check rounding rules, any payment fees and the conversion from bank points to airline miles. A number labelled as points should not automatically be treated as the same number of miles.
How To Ask For A More Useful Answer
Give the tool the exact card names, merchant, payment method and purchase amount. Add the relevant spending totals for each reward category and qualifying period, while leaving out sensitive account information.
A request such as the following makes missing conditions easier to spot:
“Compare the cards I already hold for this S$300 purchase. Use my stated spending totals to calculate the remaining reward allowance. Show the bank rule and effective date, explain any uncertain merchant classification, and calculate rewards across the full amount. If a condition cannot be verified, say what I need to check and give a fallback.”
Treat this as a request for an explanation. An assistant that cannot access the required information may still need you to supply current terms or confirm a condition with the bank.
Avoid accepting an answer that names a winner without showing the assumptions behind it.
Track Rewards And Repayments Separately
A reward tracker and a repayment reminder serve different purposes. Your tracker tells you whether spending qualifies. Your reminder protects the money needed to settle the bill.
For each card, record the reward period, qualifying spend, category allowance remaining, pending purchases and expected bonus date. Separately, record the statement balance, payment due date and the account that will fund repayment. A short weekly review can catch a growing bill before an end of month reward decision encourages more spending.
Do not add unnecessary purchases just to reach a threshold. If your planned spending is too low, compare what you would earn without the bonus. Redirecting an expense you already need may be reasonable; creating a new expense changes the cost of earning those miles.
If this happens repeatedly, rebuild your monthly budget around actual spending before changing your card strategy.
Plan to pay your statement balance in full by the due date. If you pay only the minimum sum, the remaining balance attracts interest, and interest can also apply to new purchases until the balance is cleared. Keep that repayment commitment separate from any reward calculation.
If you pay by GIRO or another automatic arrangement, check the amount selected, confirm the arrangement is active and keep enough money in the funding account. Check that each payment has gone through.
Also read: How to Pay Credit Card Bills at DBS, UOB, OCBC and Other Banks
When To Rely On The Recommendation
Use an AI recommendation when you can trace the rule, confirm the transaction conditions and reproduce the calculation using your remaining allowance. If a key detail is uncertain, choose a card whose applicable terms you can establish, or clarify the issue with the bank before paying.
Card terms, merchant classifications and promotions can change, so verify the bank’s current conditions before relying on a reward estimate. The most useful card choice earns rewards on purchases you had already planned and can afford to repay. Once the comparison is settled, keep the receipt, update your tracker and set aside the money for the bill.
If an unexpected expense leaves a gap that your card bill should not carry, apply for a personal loan with Crawfort and check your result instantly in the app.
Important note: This article is for general information only and does not consider your personal financial situation. Before taking a loan or agreeing to a restructuring plan, review the contract carefully and make sure the repayments are manageable.
Frequently Asked Questions
Do I Need To Upload My Credit Card Statement?
No. KiasuMiles’ documentation says to provide card names only and warns against sharing card numbers, CVVs, banking credentials or one-time passwords. Its hosted service does not keep the selected cards as a saved wallet. Your AI assistant may handle conversation data separately, so review its privacy settings before sharing spending details.
Would Cashback Be Easier To Manage Than Miles?
It may be, if you prefer to use rewards towards everyday expenses. Compare the conditions as well as the advertised return, because cashback programmes can also have qualifying spend requirements and caps. Choose a reward you are likely to use, without adding purchases to make a card appear worthwhile.
Should I Apply For A New Card Because AI Recommends It?
Review a few months of normal spending first. Check the annual fee, conversion fees, points expiry and whether your purchases naturally fit the card’s conditions. A strong result for one merchant may not justify another card or a more complicated repayment routine.
What Should I Do If The Expected Bonus Is Missing?
Wait until the stated crediting deadline, then compare the posted transaction with the relevant terms. Contact the bank with the date, amount, merchant description and saved rule. An AI explanation can help you frame your question, but only the bank can resolve a reward enquiry about your account.
