Originally posted by: dullard
Originally posted by: finite automaton
That's actually a good point that you bring up. Currently, I use my credit card for everything. And it generally has a monthly balance of $800-1k. Should I stop using my CC for all of my purchases?
The key is to have your balance on any given day be less than 30% of your total available credit. For example, if your credit score is calculated TODAY and your balance today is $1000 and your credit limit is $5000, then you are only using 20% of your total available credit. You should be fine in that case.
However, you must remember that the amount you owe on any given day may not be anywhere near the amount that you generally have for a monthly balance. Suppose you had a monthly balance of $1000 due this month, that you paid it in full, and that you turned right back around and charged $1000 for next month. In that case, on the day your credit score is calculated, you may have a balance of $1000, or $0 (if your check made it there before you charged the next $1000) or $2000 (if your next charge came through before your check cleared). Thus, even though you keep an AVERAGE MONTHLY balance of $1000, you might actually have a $2000 balance on the DAY your score is calculated. In that case, you'd be using $2000/$5000 = 40% of your available credit and your credit score will suffer.
To be extra safe, keep your CC usage below 10% of your available credit. But don't stop using credit cards - that'll hurt your score too. To maximize your score you need to show (A) that you use credit properly and (B) that you have additional credit unused for emergencies. If you stop using credit cards altogether, then you fail test (A), since you have to have a balance on a credit card to show that you actually use your credit properly. Also, many people forget (B). You have to have ANOTHER credit card with a $0 balance on the day your credit score is calculated to maximize your score. This is where those cards that you got and decided that you didn't need come in handy. Use them rarely to keep them active, but keep their balance at $0 on most days. If you cancel them, you kill your total available credit and you kill your chance of getting points for (B).