I hope the web calculator that I put up last week has been useful in helping readers to decide whether the OCBC360 or UOB One account is better for them. I have since enhanced the web calculator to include credit card rebates. However, the focus of today’s blog post is not on the web calculators, but on the guidelines and charts to assist readers to understand better the scenarios in which either of the accounts is better.

If you have played with the web calculator, you would realise that while the calculator can tell you precisely which account is better for a certain scenario, it does not tell you under which scenarios would one account be better than the other. Furthermore, the amount of money that you can have in the account is not static; it varies over a range depending on cashflows. Depending on the amount of money that …