[Ekaros]

10 cards, with average of 3000 limit. Would mean you could take a 30000 more loans at high interest rates very quickly. It is not about having used and paid them, but capability to get loans beyond what you can manage very quickly.

[skissane]

It turns into a bit of a pointless ritual though - “I need a mortgage, I’m going to cancel cards I don’t use and slash my credit limits to maximise my borrowing power” - but no sooner have I bought the property, I will apply to increase them again, and they are unlikely to say “no”-even if the credit card is issued by the same bank as the mortgage. Or at least, that’s my personal experience in Australia