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Your credit utilization is simply the portion of your available credit you use, expressed as a percentage. It is the total of balances on all your credit cards divided by the total of all your credit limits. (It's also figured on a per-card basis.) This number is a big factor in your credit score — the less available credit you use, the better it is for your score.
Paying your balances on time and in full every month is the best way to keep your score intact or build it. On the other hand, using a larger portion of your credit limit could do damage.
But if a financial crisis means you have to lean on credit cards, take heart: Credit scores can rebound quickly once you're able to lower your utilization.
These tactics can help you keep your utilization low.
Track how much you’re charging to each card
The simplest way to avoid losing credit score points for using too much of your limits is to watch how much you charge to each card. Make a habit of patrolling your online accounts to keep tabs on spending. If you are close to using 30% of your credit limit on one card, try to make a payment or switch to using another card.
You can also monitor your per-card and overall credit utilization by viewing your credit score profile from NerdWallet.
Ask for higher credit limits
If it’s tough for you to avoid utilizing more than 30% of your available credit, another solution might be to request a credit line increase on your card or cards. In the case of the COVID-19 pandemic, you may be able to get a higher credit limit temporarily, especially if you have a good record as a customer.
Another option to get a higher overall credit limit is to ask a friend or relative to add you as an authorized user on an established account. He or she needn't actually give you a card or tell you the account number for your credit score to benefit. Do choose carefully: Being on the account of someone who is having problems with credit could affect your score, too. You want to be on an account showing good payment history, preferably with a high credit limit and consistently low credit utilization,
A higher overall credit limit could help you keep your credit utilization lower than it would be otherwise. This could make a big difference in your credit score.
Set up balance alerts
Technology can help. Sign up with your credit card issuer to receive alerts via text message or email. You can choose to be alerted when the balance reaches a certain amount or percentage of your credit limit. Your goal is to keep the balance below 30%.
Find out when your issuer reports to the credit bureaus
Most credit card issuers report your balance and payment activity to the credit bureaus once every 30 days. However, this doesn’t necessarily coincide nicely with when your bill is due. If your issuer reports a few days before the end of your billing cycle, you’ll consistently look like you’re carrying a high balance — even if you pay it off in full just a few days later.
But this can be solved by placing a quick call to your card issuer’s customer service line and asking when they report to the credit bureaus. Simply pay off as much of your balance as you can in advance of that date every month, and you might see a jump in your score.
You may have heard of the AZEO (all zeroes except one) method, which involves paying off all but one of your credit cards in full by their statement closing dates rather than waiting for the payment due date. That gives those accounts a zero or very low balance when the issuer reports to the credit bureaus. On one card (which you pay in full by the due date), you keep your utilization low, typically less than 10%. Whether the AZEO method is more effective than a continuous habit of keeping your utilization low isn't clear.
Get into the habit of paying mid-cycle
Simply getting into the habit of paying twice per month instead of once could help you keep your balance a little lower. Lower balances can save you interest if you carry a balance — and are good for your credit score regardless.