The Rebuild · Entry 07

Utilization Explained

Utilization is how much of your available revolving credit you are using: balances divided by limits. It drives about 30% of a FICO score as part of amounts owed, and it is the fastest lever you control.

Why it matters

Unlike payment history, utilization has no memory. Lower it and the score responds at the next report. That makes it the first thing to fix before any application.

Key facts

  • Both per-card and overall utilization matter; one maxed card hurts even if the total looks fine.
  • Common guidance: keep reported utilization under 30%; under 10% is where the best scores live.
  • Utilization is measured from the reported statement balance, not what you pay later. Paying in full after the statement cuts still leaves the reported balance on file.
  • A zero balance on every card can score slightly worse than a tiny balance on one.
  • Asking for a higher limit lowers utilization without paying a dollar, if the card grants it without overspending temptation.

In practice

  1. Find each card's statement closing date; pay before it so a low balance is what reports.
  2. Compute your overall utilization today: total balances divided by total limits.
  3. Before a big application, aim for under 10% overall and no card over 30%.
  4. Request limit increases on clean old cards; decline any that require a hard pull you did not plan.
Sources & further reading
myFICO (myfico.com) · Experian consumer education · Consumer Financial Protection Bureau (consumerfinance.gov)