A credit score is a calculable number built from five specific, weighted factors — not a mysterious black box, and knowing the actual formula tells you exactly what to focus on.

The Formula

Your FICO score is built from: payment history (35%), amounts owed/utilization (30%), length of credit history (15%), new credit (10%), and credit mix (10%). Scores range from 300-850, with 670+ generally considered "good" and 740+ considered "excellent" by most lenders. This isn't a single universal score either — FICO and VantageScore weigh these same factors somewhat differently, which is why you might see different numbers on different apps.

Worth knowing: Because payment history and utilization together make up 65% of your score, those two factors deserve nearly all your active attention — set up autopay for at least minimum payments, and keep utilization under 30% (ideally under 10%). Length of history, new credit, and credit mix matter, but they respond to time and patience more than active effort.

Someone New to Credit: Focus entirely on on-time payments and low utilization from day one — length of history can't be rushed, but the other factors compound favorably the earlier you build good habits.

Someone Rebuilding After a Setback: The same two factors (payment history, utilization) are your fastest path back — a consistent on-time-payment streak and low utilization move the score faster than anything else in your control.

Improve Your Score, Starting With What Matters Most

  1. Set up autopay for at least the minimum on every account.
  2. Keep utilization under 30%, ideally under 10%.
  3. Check your score and full report for errors — dispute anything inaccurate.
  4. Don't open unnecessary new accounts just to "diversify" credit mix — it's only 10% of the score.

See the 5 factors that make up your credit score for the deeper mechanics of each factor.