Dexter from the WhatCard.sg team reached out and asked if we can do a small post on their "passion project". I went to their site, played around for a few minutes and agreed to it. If you are wondering, this is not sponsored and I agreed to it because I thought this is really quite useful. They are not even charging or selling anything. Anyway, you can read more about them here.  Forget about which camp (cashback or miles) you belong to. All the credit cards have their own set of rules/T&Cs to follow, rewarding you for certain categories of spendings (e.g. Travel, Online, etc.) and excluding some (e.g. Insurance Premium, Bills, etc.). All these transactions can be categorized by their relevant MCC. What is MCC?
Merchant Category Code (MCC)
MCC is used to classify the business by the type of goods or services it provides. -Wikipedia
An example of the MCC...