One thing that continues to bug me about 10X cards in Singapore is how Russian Roulette the whole game is. 10X cards give you 4 mpd if you use them at a bonus category merchant, but 0.4 mpd otherwise.
โOkay geniusโ, you say. โThen just use them at bonus category merchants.โ
Yeah well we would, if we only knew beforehand just which merchants counted. You see, this isnโt always clear. Suppose I have a card that gives me 10X on dining. Is a restaurant in a hotel going to code as a restaurant, or as a hotel? Will a Delifrance outlet located in an NTUC code as a restaurant, or as groceries? Or suppose I have a card that gives me 10X on shopping. Is a clothing store within a factory outlet complex going to code as a clothing store, or under some larger holding company MCC?
The potential permutations are endless, and if you ask the cashier what their MCC is youโre more likely than not going to be met with a blank stare. Heck, you canโt even call up the banks beforehand to check, because theyโll tell you the can only verify after the transaction posts.
So where does that leave you? It means with 10X cards you either win big or lose big (in terms of the opportunity cost of not putting that spend on a general spending card that earns 1.2-1.4 mpd)
Thatโs unless you live in the States, because Iโve just found an incredible online tool called the Supplier Locator.
Itโs simple enough to use. You enter the address of the merchant in question and click search (you canโt search by name alone, which I guess makes sense given how many merchants are bound to have similar names or be part of the same chain).
So suppose Iโm going to San Francisco and for whatever reason feel like dining at Trace restaurant at the W Hotel.

Do Iโฆ.
(A) Use my UOB Preferred Platinum AMEX/ Maybank Horizon Visa Signature card for 4.0/3.2 mpd respectively on my overseas dining?
(B) Use my UOB PRVI Miles card for 2.4 mpd on foreign currency spending?
*The above isnโt so much an issue if you have the UOB Visa Signature card which would give you 4.0 mpd regardless capped at $2,000 per statement period with a minimum spend of $1,000, but letโs ignore it for the purposes of this illustration
The answer obviously depends on whether Trace has its own MCC, or whether itโs part of the hotel proper. Well, plug in the W San Franciscoโs address and here you go-
You can see that the hotel and restaurants have a separate MCC, meaning it should be safe to go ahead and use your UOB PP Amex/ Maybank Horizon Visa Signature at Trace.
Another great example of how this can help is when youโre shopping at factory outlets. Presumably this is a great opportunity to use your Citibank Rewards card, but do each of those outlets have their own MCC or are they part of some bigger general MCC?
Hereโs the result for the premium outlets at Gilroy California. I didnโt list everything, but this gives you an idea of the wealth of information availableโฆ
Cross check that list against the Citibank Rewards 10X table, and no more drama (the biggest surprise for me is that the Disney Store is classified as stationary/ office supplies. I guess even Disney princesses have to get their paperwork on).
The obvious limitation is that this tool only works for merchants in the States. I suppose if youโve got an upcoming vacation to the States and want to line up all your 10X ducks, this site could still be useful. The other limitation is that I donโt see any way of using it to check the MCCs of online merchants (unless maybe you know their registered business address).
What about Singapore?
This got me thinking- if Visa is fine releasing this sort of information, then it means that MCCs are not really โconfidential informationโ (I always thought thatโd be pretty duh, given that you can always find out the MCC after the fact, but youโd be surprised at what some people get told by CSOs). So that begs the question: why canโt we have something similar in Singapore?
I remember writing a Christmas wish list some time back and requesting โ an app that lets you check MCCs before buying somethingโ. At the time I believed it was the banks that were responsible for MCCs, but now that Iโve educated myself a bit more I know itโs the card issuers like Visa/Mastercard that are responsible for this.
If Visa can put however many millions of merchants into an easily searchable database for the entire USA, surely something similar could be done for smaller geographies? Itโs a question I put across to Visaโs PR team. I donโt really expect anything beyond a form letter, but hey, whatโs Christmas without some hope.
Hallelujah! One can only hope. Have you been a good boy this year?