Real Estate | Bristow & Northern Virginia
Updated August 2026
If you're planning on buying a home, improving your credit score can make a real difference in the interest rate you're able to get on your mortgage — which can make a real difference in your monthly payment for years to come.
But it's hard to improve something you don't understand. Knowing exactly what goes into your credit score can help you figure out where you actually have room to improve, and which changes will move the needle the most.
The Five Factors, and What They Actually Weigh
Your FICO score — the model most lenders still use — is built from five weighted factors:
- Payment history (35%). This is, by far, the single biggest factor. It's simply whether you've paid your bills on time. A history of on-time payments is the strongest predictor lenders have for whether you'll keep paying as agreed.
- Amounts owed / credit utilization (30%). This looks at how much of your available credit you're actually using — and it's worth understanding the actual tiers, not just "under 30%." Roughly speaking: 1-9% utilization is the sweet spot, where most people with scores above 800 tend to sit. 10-29% is still considered low, with only a minor impact. Once you cross 30%, the effect starts to show more. Above 50% drags scores noticeably, and a maxed-out card in the 90%+ range can meaningfully hurt your score — even if your overall utilization across all your cards looks fine. That's because scoring models look at both your overall utilization and your highest individual card's utilization separately. Interestingly, 0% utilization isn't actually optimal either — scoring models want to see some responsible, ongoing use, not complete avoidance. If you're carrying high balances across several cards — say 70-90% on more than one — the smartest approach isn't necessarily to split extra payments evenly. Pay the minimum on cards with lower utilization, and put any extra money toward the card with the highest individual utilization first. Since a single maxed-out card can drag your score down on its own, bringing that one card's percentage down first tends to move your score faster than spreading the same dollars thin across every card.
- Length of credit history (15%). Lenders want to see an established track record. This factor is based on the age of your oldest account, your newest account, and the average age across all of them — which is exactly why closing your oldest credit card can quietly hurt your score, even if you never use it.
Credit mix (10%). A mix of both revolving credit (credit cards) and installment loans (mortgage, auto, student loans) shows lenders you can manage different types of debt responsibly. - New credit (10%). Opening several new accounts in a short window can ding your score slightly, since it signals increased risk. A single hard inquiry usually costs less than 5 points and typically recovers within a few months if you keep up with payments.
A Real Update Worth Knowing About
Here's something that's changed since we first wrote about this topic: in 2026, the Federal Housing Finance Agency directed Fannie Mae and Freddie Mac to begin accepting both VantageScore 4.0 and FICO Score 10T for mortgage underwriting, expanding beyond the older, single-snapshot FICO model that's been standard for years.
Both of these newer models incorporate 24 months of trended credit data, rather than just a snapshot of where your credit stands today — meaning a borrower who's actively paying down debt over time can look meaningfully stronger under these models than they would have under the older system. VantageScore 4.0 goes a step further, factoring in on-time rent payments for the first time too, something we've written about separately. The good news: regardless of which specific model a lender uses, the five underlying factors above stay the same — improving your fundamentals helps your score across every version.
Never Actually Checked Your Score? Start Here
If you've never really tracked your credit score, or haven't looked in years, getting started is easier than most people think — and free. A few reliable options:
- Credit Karma — free, tracks your VantageScore from TransUnion and Equifax, updates weekly, and breaks down exactly what's helping or hurting your utilization and other factors.
- Experian — free tier gives you your actual FICO Score 8 (the model most lenders actually use) from the Experian bureau, updated monthly.
- CreditWise by Capital One — free FICO score tracking, and you don't need to be a Capital One customer to use it.
- AnnualCreditReport.com — the only federally authorized source for a truly free copy of your full credit report from all three bureaus, once a year. This shows the underlying report, not just the score.
None of these charge a monthly fee for the basics, and using any of them just to check your own score is a "soft" inquiry — it never hurts your credit. Once you can see your real numbers across payment history, utilization, and the rest, everything above becomes something you can actually act on instead of guessing at.
What We Tell Our Buyers
For buyers who need some work on their credit score and already have credit cards, we walk them through credit utilization specifically — it's often the fastest lever available. Unlike payment history, which takes months or years to fully rebuild, utilization is recalculated every billing cycle, so paying down a card balance before your statement closes can show up as a real, strategic bump in your score within just a month or two. We help buyers figure out which cards to pay down first and by how much to get the most impact in the shortest window before they're ready to apply for a mortgage.
We also advise against closing out cards, even ones you don't use anymore — since that can shrink your available credit and shorten your average account age, both of which can quietly hurt your score. And we recommend setting up autopay on every card, even if it's just the minimum, simply to avoid forgetting a payment. A single missed payment can have an outsized impact on your score, and it's one of the easiest mistakes to prevent.
Here's a strategy that's less commonly recommended by financial planners, but one we've seen work well for disciplined clients: opening a new credit card can actually help your score, because it increases your total available credit and lowers your overall utilization ratio — without you needing to pay down a dollar of existing debt. The catch is that this only works if you genuinely won't run up a new balance on the card. For someone with the discipline to open a new line and simply let it sit (or use it lightly and pay it off in full), it's a legitimate, faster way to bring utilization down than waiting to pay off existing balances alone.
Bottom Line
Your credit score isn't a mystery — it's a weighted formula, and now you know exactly what goes into it. Focus your energy on the two factors that matter most (payment history and utilization, together 65% of your score), and the rest tends to follow.
Not sure where your credit actually stands, or how it affects your real mortgage options? We're happy to connect you with a lender for a real, no-pressure conversation. Get started →
Related reading: Paying Rent on Time Can Help You Get a Mortgage