Credit Utilization Ratio Calculator

Yes, because most card issuers report the balance shown on your statement closing date to the credit bureaus, not your balance after you pay it off, so a high statement balance can register as high utilization on your credit report even for someone who never carries a balance or pays interest. Paying down the balance before the statement closes, rather than just before the due date, avoids this.

It's an observed pattern in how scoring models behave rather than an official rule written anywhere — people who keep utilization under roughly 30% tend to score noticeably better than those above it, but scores generally keep improving as utilization drops further, with under 10% often cited as ideal. There's no single hard cliff at exactly 30%; lower is consistently better across the range.

It can — many scoring models evaluate utilization both as a combined total across all your accounts and per individual card, so one card sitting near its limit can drag down your score even if your overall blended ratio, the figure this calculator computes, looks moderate. Spreading balances more evenly, or paying down the highest individual card first, can help beyond what the pooled number alone suggests.

It usually hurts, because closing a card removes its credit limit from your total available credit while your balances elsewhere stay the same, which mechanically raises your overall utilization ratio even if your spending habits haven't changed at all. Keeping old, unused cards open with a zero balance is often better for this specific number, even though it runs counter to some people's instinct to simplify their accounts.