Is it REALLY that bad for your credit to close credit card accounts?

It costs us extra, it’s part of a lender’s deal with Fair Isaac. The whole point of FICO scores is to give the lender a number that it can use to rank applicants so each lender doesn’t have to come up with their own algorithm. It takes far less time to set interest rates by score than to hire someone to evaluate each credit report individually. There are slightly different FICO score for home buyers and auto purchasers but almost all lenders use some credit score variation.

From Wikipedia:

The only loans I know of that don’t use a FICO score are some FHA loans which will take into account your credit history for the past 24 months instead of using a score. But almost everywhere else is gonna look at your FICO score, including such atypical uses as apartment leasing and insurance rates.