Hefty Income Tax? Pay it With Credit Cards to Earn Rewards! Exclusive CardUp Promo!

Tax season is here again, and you should be getting your Notice of Assessment (NOA) soon! It’s a mixed bag of emotions for me: I want to be in a higher income tax bracket… but I don’t actually want to pay the income tax. But only two things are certain in life and since I’m not about to die yet (I hope), it’s time to explore ways to make this tax less painful.

Using credit cards to pay

It goes without saying that you should always pay with a credit card wherever possible to earn rewards, but IRAS doesn’t accept credit cards for your tax payment. There are certainly ways to get around this, and CardUp is one such service that allows you to pay for various transactions that typically can’t be paid for using credit cards. In fact, you can do this for things like your car loan, insurance policies, rent, and any other invoice you may have that don’t typically accept credit cards.

The recipient does not have to specifically accept CardUp, and to them it is as good as you making a bank transfer to them, so they do not need to be involved when you opt to pay with your card.

Such services charge a fee, but it is definitely worth it if your card can give you rewards greater than the service fee. The simple equation:

Rewards – Service Fee = Nett Gain

Read on to discover how to increase Rewards and decrease Service Fee for maximum gains, and even score some free miles or cashback!

Step 1: Use the right card to increase Rewards

CardUp is listed under MCC 7399, and you’ll need to use cards that do not exclude this MCC. Also, you can refer to CardUp’s list here on cards that are eligible for rewards.

As with most things in life, you can choose between cashback or miles cards to earn you rewards:

Cashback cards



No current promo; apply for one of the other OCBC Cards first.

Cashback Rate6%
RequirementMinimum $600 per month, capped at $25 for online category

OCBC FRANK’s latest revamp late last year made it a very useful cashback card, and I have found its list of exclusions pretty permissive so far. CardUp doesn’t list this as an eligible card, although they are currently confirming with OCBC whether it’d work because CardUp’s list was updated before FRANK’s revamp. Personally I think it’d work, but please don’t try large amounts if you can’t afford to risk it. I have grounds to believe that this doesn’t work for CardUp, but may work for ipaymy (another similar service).

In any case, FRANK’s limit is pretty low; the card offers a maximum of $25 on its online category, which is a maximum $417 spend. You will also have to clock a minimum $600 spending in a calendar month to qualify for 6% cashback, which means you will have to spend another $183 via Paywave to get an optimal 6% rate. If you do all $600 on the online category, the cashback rate is 4.17% ($25 on $600 spend).



S$350 Cash credits:
The first 200 new-to-UOB credit card customers in March 2024 who successfully apply for an eligible UOB Credit Card between 1 March 2024 and 31 March 2024 (both dates inclusive) and spend a min. of S$1,000 per month for 2 consecutive months from their card approval date, will receive S$350 cash credit.
T&Cs apply.

Terms and conditions

For New-to-UOB Credit Card Customers: Enjoy enhanced cashback of up to 15% cashback on McDonald’s, DFI Retail Group , Grab, SimplyGo (bus and train rides), Shopee and UOB Travel transactions when you apply for a UOB One Credit card till 31 Mar 2024. Terms and conditions apply.

Get 3.33% base cashback if you spend $500, $1,000, or $2,000 a month for three consecutive months. Up to 6.67% additional cashback for Grab, Shopee, and Diary Farm merchants.

Cashback Rate3.33% / 5%
Requirement3.33%: $500 / $1,000 monthly for a quarter
5%: $2,000 monthly for a quarter

UOB One offers a great 5% rate on a sizeable amount of spend, but the catch is that you need to make a minimum of $2,000 monthly spend for a quarter in order to get $300 of cashback. If you have a monthly payment of $2,000 for rent perhaps, you should definitely make use of this to enjoy savings on your expenditure.

Even if your monthly expense isn’t this big, putting them on recurring payments via CardUp can still help you unlock UOB One’s cashback tier more readily, and your other adhoc expenditure can make up the rest.

Other notable cashback cards:

CardCashback RateRequirement
Amex True Cashback + GrabPay Mastercard3% (new Amex cardholders)
1.5% (normal rate)
Use Amex True Cashback to top up Grab, then pay with GrabPay Mastercard
UOB Absolute + GrabPay Mastercard5% (new UOB cardholders)
1.7% (normal rate)
Use UOB Absolute to top up Grab, then pay with GrabPay Mastercard
Maybank Platinum 3.33%$300/month spend or $1,000/month spend for a quarter
Bank of China Family3%$800 minimum spend, maximum $25 cap on online category

Mile cards

If you use a mile card, you are paying service fees in exchange for miles, which means you are essentially buying miles. This is something many people would do given the right price; miles are after all worth something, and the value of each mile increases depending on how you use them.

CardEarn RateCost Per Mile (assuming 1.75% service fee)
High SES Card
(e.g. UOB Reserve, OCBC Voyage etc.)
1.6 mpd1.075
UOB PRVI Miles1.4 mpd1.228¢
Entry Level Card
(e.g. Citi Premier Miles, DBS Altitude, KrisFlyer UOB etc.)
1.2 mpd1.433¢

New OCBC Cardholders


  • Get an Apple Bundle [Apple AirPods (Generation 3) with Magsafe Charging Case + MagSafe Charger] (worth S$330.50)
  • Travel Bundle [Samsonite Volant Spinner 68/25 EXP + 2x Apple AirTag] (worth S$570)
  • Hinomi H1 Classic Plus Ergonomic Office Chair with Headrest (worth S$459)
  • S$300 cash via PayNow

Charge at least S$500 within 30 days from card approval

⚠️ Fill up SingSaver rewards form in email to choose your gift. No form completed = no reward given

Last date to apply: 31st January 2024

Terms and conditions:

  1. Tap here (save a copy for your own reference)

Earn 1.3 Travel$ (1.3 miles) per S$1 in local currency spend. Travel$ are awarded in blocks of S$5 per transaction

The OCBC 90°N is a very interesting mile card to use. It has an earn rate of 1.2 Travel$ per dollar spent, and this is equivalent to 1.2 miles per dollar. It also allows users to redeem for vouchers or rebates at a pretty decent rate (unlike other cards/banks). This makes it a very versatile card if you’re undecided on miles or rebates.

Step 2: Use promo codes to reduce Service Fees

To further enhance your nett gain, you should reduce the service fee payable with promo codes. To that end, CardUp has offered an attractive deal to Sethisfy readers:


305 days 1 hour 27 minutes 47 seconds left to grab this offer!

New user: sign up and use code SETHISFY Get S$30 off transaction fee ¹

(free miles/cashback for a payment of about S$1,153!)
New/existing: use code SETHPROP175 for property tax payment (until 31st January 2024)Get discounted fee of 1.75%²

Terms and conditions:

  1. Terms and conditions for SETHISFY
  2. Terms and conditions for SETHPROP175

Depending on the amount, you may incur no service fee on your first payment at all, meaning free miles or cashback!

Analysis of benefits

With cashback cards, the equation is very straightforward. As long as your cashback earn rate is higher than the service fee, you are making money by moving your non-card payments to these services Also, for cards like UOB One that require high minimum spends, CardUp can help you reach the spending much easier.

With mile cards, you are buying miles which can let you book premium flights which typically go for a lot more if you pay in cash.

If you have read my site for a while, you would know that I don’t normally value miles significantly above 1 cent per mile because I do not place a high premium on business class tickets. Nonetheless, if you have the intention of travelling business class at least once in your life, purchasing miles for 1.433¢ each still makes a lot more sense than buying the business class ticket with cash. A round trip to Japan in business class can cost thousands of dollars with Singapore Air, but it’ll run you around $1,500 if you buy all the miles required at 1.433¢ each.

Ideally, you would be earning miles on your 4 mpd card on your everyday expenses, but even the best 4 mpd card strategy would struggle to gather enough miles if you don’t have a lot of spending. Such services services thus accelerate your ability to reach the needed amount of miles for your desired trip.

With the right promo code, you can even get free miles or cashback! Definitely try out CardUp if you haven’t already done so.

If you prefer, you can also try ipaymy:


Ongoing promo

New user: sign up hereGet S$30 off transaction fee

(free miles/cashback for a payment of about S$1,333!)

After signing up with the link, an email will be sent to you with the code.

Keep up to date on the best cashback/mile cards, financial products, attractive deals, and more tips to maximise your financial wellbeing by subscribing to my Telegram channel.

Subscribe to the channel, then join the group chat. You would often benefit from the tips shared exclusively in the group chat!

Disclaimer: I may receive an affiliate/referral fee when you sign up for services/products on this site, and such fees keep the site running. I would only recommend services/products I would personally use or recommend to my own friends and family, but I do not provide any warranty or guarantee for the quality of these services/products. Thank you for supporting my site!

Please exercise due diligence when signing up for any service/product as I will not be liable for any personal loss, financial or otherwise. Content published here are my sole views and personal opinion, and none of the information here constitutes personal financial advice nor represents the views of my employer(s).

Leave a Reply