Is it beneficial to my credit score if I close my youngest credit lines while preserving my current credit utilization rate?
"I wrote How Old is Your Credit Card? some time ago. The answer is yes, this helps the credit score, but this factor, age of accounts, is pretty minimal. Grabbing deals, as you did, I'm actually down to a ""C"" for this part of my score, but still maintain a 770 score." Credit Score is rather misleading, each provider of credit uses their own system to decide if they wish to lend to you.   They will also not tell you how the combine all the factoring together. Closing unused account is good, as it reduced the risk of identity theft and you have less paperwork to deal with. It looks good if a company that knows you will agrees to give you more credit, as clearly they think you are a good risk. Having more total credit allowed on account is bad, as you may use it and not be able to pay all your bills. Using all your credit is bad, as it looks like you are not in control. Using a “pay day lender” is VERY bad, as only people that are out of control do so. Credit cards should be used for short term credit paying them off in full most months, but it is OK to take advantage of some interest free credit.
"This answer is an attempt to answer the actual question posed. Please keep in mind that this applies specifically to the Equifax credit model that Mint uses as mentioned in the accepted answer, and that different models may react in different ways (or not at all). As mentioned in the comments, the number of total accounts you have does not have much bearing on your overall credit score. If you click on Mint's ""About Total Accounts"" link, you get the following statement: Total Accounts has a low impact on your score. Second, the way the Total Accounts score is represented is misleading. This is not a count of the total number of accounts you have open, but rather how many accounts you have in your total history. Mint's header under this metric is flat out wrong: Try to have a good mix of credit lines open. To back up the assertion that this is looking at total accounts in your credit history rather than just those that are open, my Mint report shows 2 open accounts and 7 closed accounts, for a total of 9. Under the Total Accounts metric, I am plotted smack dab in the middle of the ""Not Bad"" range, right where people with 9 would be plotted. So the proper advice here is to just let it be and only open new accounts as you need them. As you amass credit history, this metric will continue to grow naturally - it should never decrease. You may ask, then, why did your overall score decrease when you paid off your student loans? Most likely because your average age of credit dropped when you closed your loan account. If you're like most people I know, your student loan is one of your oldest accounts, so closing that account will hurt your score - credit age is measured only on your open accounts." "As long as you're not trying to get a higher limit in order to actually spend more money, or might be tempted to do so, it's generally advantageous to have a higher limit if available. A large part of credit score is based on utilization rate (balance due at statement closing divided by credit limit). Basically, you want more than 0% and less than 30% or preferably less than 10% used. Doubling your credit limit halves your utilization rate. And it can be comforting to have it there ""in case you need it"" in some sort of emergency scenario. Caveats: There's no ""right"" or ""default"" amount of credit that you ""should have"" at any given point in your life. If you're using credit responsibly, and don't need more credit, there's no particular reason to ask for more credit. If you work at it and are patient, it's easy to eventually have tens of thousands of dollars of unused credit limits, but that doesn't really get you anywhere you need to be by itself." You don't need a credit score. After I paid off my house mortgage many years ago I had this discussion with my mortgage agent (now bank VP). Your credit score is not a measure your ability to repay. It is a behavioral model and a statistical measure of the likelihood that the banks will make money off of you when they give you a loan, and a marketing tool that the banking industry uses to sell you long term and short term debt (mortgages and credit cards). Statistically speaking, people who close out major loans change their behaviors, and the model captures this change in behavior. In my own case, even though I have a credit history and sufficient cash is the bank to buy my next home outright, I have no credit score . What the model says is that people with my behavioral profile are not likely to take a loan, and if they did take one, they would pay it back so quickly that the bank would not even recoup the cost of initiating the loan. In short, people with my profile are bad news for the loans side of the bank. Thanks @quid for suggesting I capture this and post it as an answer In my own case, my credit score went up drastically after I closed cards.  It did go down a bit (like 10 points) in the short term.  Within 6 months, however, I did see significant gains.  This would include closing the American Express card that I had for like 10 years.  According much of what I read, you should never close a AMEX card.   I did and it did not hurt me. What helps all this is that my utilization is zero. Well, you might take a minor hit to your credit score. This is snapshot of my credit utilization written for an article on my site. The point there was that zero card use actually dinged the score, but for you, going over the 20% level is the risk. It's not too large a hit, depending how high the utilization goes. I'd not lose sleep over it. Kind of you to help. Buy one and use it but never spend more than you can pay off at the end of the month.  Also, remember that the length of credit affects your rating too, so don't go canceling cards and/or getting new ones every time a new gimmick comes along. Carrying a small balance is generally better for your credit score that paying off in full every month by virtue of the statistics and models that give you a credit score for a certain product. Banks don't want to lend to customers that aren't going to be profitable, in my experience customers who can show that they have credit over time are generally awarded a higher score. So my advice would be to keep a small, manageable balance on the credit card, paying off the balance and then spending a little again on the card to keep at roughly constant balance. This revolving credit is the purpose of the product, and by showing you can use it sensibly, you will be rewarded over time. Source: I build credit scoring models for a big UK lender, specialising in credit cards and personal loan modelling. "This answer is an attempt to answer the actual question posed. Please keep in mind that this applies specifically to the Equifax credit model that Mint uses as mentioned in the accepted answer, and that different models may react in different ways (or not at all). As mentioned in the comments, the number of total accounts you have does not have much bearing on your overall credit score. If you click on Mint's ""About Total Accounts"" link, you get the following statement: Total Accounts has a low impact on your score. Second, the way the Total Accounts score is represented is misleading. This is not a count of the total number of accounts you have open, but rather how many accounts you have in your total history. Mint's header under this metric is flat out wrong: Try to have a good mix of credit lines open. To back up the assertion that this is looking at total accounts in your credit history rather than just those that are open, my Mint report shows 2 open accounts and 7 closed accounts, for a total of 9. Under the Total Accounts metric, I am plotted smack dab in the middle of the ""Not Bad"" range, right where people with 9 would be plotted. So the proper advice here is to just let it be and only open new accounts as you need them. As you amass credit history, this metric will continue to grow naturally - it should never decrease. You may ask, then, why did your overall score decrease when you paid off your student loans? Most likely because your average age of credit dropped when you closed your loan account. If you're like most people I know, your student loan is one of your oldest accounts, so closing that account will hurt your score - credit age is measured only on your open accounts."