Utilization is the part of your credit limit that is in use. If you have a $5,000 limit and a $1,000 balance, your utilization is 20%. It sits inside the "amounts owed" part of your score, which makes it one of the fastest things you can change.
How it is calculated
Take the balance
Use the balance on the date your issuer reports to the bureaus, normally your statement date.
Divide by the limit
Balance ÷ limit × 100 gives the percentage for that card.
Add up all cards
Total balances ÷ total limits gives your overall utilization, which is also counted.
- 20%
- $1,000 on a $5,000 limit
- 10%
- $1,000 total on $10,000 of limits
- Under 30%
- A common guideline for a healthy ratio
One card
All cards combined
Lower is better
The statement date matters
Many people pay on the due date and still show high utilization, because the issuer reported the balance when the statement was issued.
Day 1 to 30
You spend
Your balance goes up through the billing cycle.
Statement date
The balance is reported
This number is what most issuers send to the bureaus.
About 3 weeks later
The due date
Paying in full here avoids interest, but the reported balance is already set.
Habits that keep it low
- Paying part of the bill before the statement closes
- Spreading spending across cards
- Asking for a limit increase when your income rises
Habits that push it up
- Using most of a single card each month
- Closing an old card, which removes its limit
- Making a large purchase right before the statement
See how credit scores work for where utilization fits among the other factors.
A worked example
Take two cards with limits of $4,000 and $6,000, so $10,000 in total. In one month you spend $900 on the first card and $300 on the second. The first card shows 22.5%, the second 5%, and the total is 12%. If you pay $600 on the first card before the statement date, the first card drops to 7.5% and the total to 6%. The spending did not change, only the timing.
Common mistakes
Maxing out one card. A single card near its limit hurts, even if the total looks fine.
Paying only after the due date. The balance on the statement date is already reported.
Closing a card with a large limit. Your total available credit falls and the ratio rises.
Treat utilization as a monthly habit rather than a one-time fix. Because it is recalculated from each new statement, a high month is forgotten soon and a low month is rewarded quickly.
Questions people ask
Is zero utilization best?
Not necessarily. Very low is good, but a card that shows no activity at all can be closed by the issuer. A small balance that you pay in full each month keeps the account active.
Does a higher limit help?
It can, if your spending stays the same, because the same balance is a smaller share of the limit. Asking can lead to a credit check, so find out first whether it would be a hard inquiry.
Sources
Written from these pages and checked against them on October 5, 2026. Programs and rules change, so check the provider’s current terms before you decide.
General information, not financial, legal or travel advice. Your own card terms and the provider’s current rules always come first.