Your credit score is one of the most powerful numbers in your financial life — and nowhere does it matter more than when you're applying for a mortgage. Lenders use your score to determine not just whether you qualify, but what interest rate you'll pay. Even a small improvement in your score can translate to tens of thousands of dollars in savings over the life of your loan.
The good news: credit scores are not fixed. With the right strategy and a little patience, most borrowers can meaningfully improve their score in three to six months. Some changes take effect even faster.
Whether you're planning to buy in the next 90 days or the next year, this guide walks you through exactly what to do — and what to avoid — to put your best credit foot forward when it's time to apply.
Step 1: Know Where You Stand
Before you can improve your score, you need to know your starting point. Pull your credit reports from all three bureaus — Equifax, Experian, and TransUnion — at AnnualCreditReport.com. You're entitled to a free report from each bureau every 12 months.
Review each report carefully for errors. Common mistakes include:
- Accounts that don't belong to you (possible identity theft or mixed files)
- Late payments reported incorrectly
- Balances that haven't been updated after payoff
- Duplicate accounts showing the same debt twice
- Closed accounts still listed as open
If you find errors, dispute them directly with the reporting bureau. Bureaus are required to investigate and respond within 30 days. Correcting even one error can produce a significant score jump.
Step 2: Pay Down Revolving Balances
Credit utilization — the percentage of your available revolving credit that you're using — accounts for roughly 30% of your FICO score. Lenders generally want to see utilization below 30%, and the best scores belong to borrowers who keep it under 10%.
If you have a credit card with a $10,000 limit and a $4,000 balance, your utilization on that card is 40% — above the preferred threshold. Paying it down to $2,500 drops utilization to 25%, and paying it to $1,000 gets you to 10%.
Focus on cards where you're closest to the limit first. Even if you can't pay them off entirely, reducing high-utilization accounts has an outsized impact on your score.
One important note: don't close paid-off cards. Closing a card reduces your total available credit, which can actually increase your overall utilization ratio and hurt your score.
If you're planning to apply for a mortgage in the next 60 to 90 days, this is the single highest-leverage action you can take. Credit score improvements from balance paydowns are typically reflected within one to two billing cycles.
Step 3: Protect Your Score in the Months Before You Apply
Once you've started improving your score, the goal shifts to protecting it. Several common behaviors can cause your score to drop right when you need it most.
Avoid opening new credit accounts in the three to six months before you apply. Every new application triggers a hard inquiry, which temporarily lowers your score. New accounts also reduce your average account age, which affects the length-of-credit-history component of your score.
Pay every bill on time — without exception. Payment history is the single largest factor in your FICO score, accounting for 35%. A single 30-day late payment can drop your score by 60 to 110 points depending on your current score level.
Keep your existing accounts active. Lenders like to see a mix of credit types (installment loans and revolving credit) with a long, positive history. Don't let cards go dormant — use them for small purchases and pay them off monthly.
Finally, don't make any large purchases on credit before closing. Buying furniture, appliances, or a car on credit before your mortgage closes can change your debt-to-income ratio and jeopardize your loan approval — even after you've been pre-approved.
What Credit Score Do You Need for a Mortgage?
Different loan programs have different minimum credit score requirements. Here's a general overview:
- Conventional loans: typically 620 minimum, with the best rates at 740+
- FHA loans: 580 minimum with 3.5% down; 500–579 with 10% down
- VA loans: no official minimum, but most lenders prefer 620+
- Jumbo loans: typically 700–720 minimum
Keep in mind that meeting the minimum doesn't mean you'll get the best rate. Lenders tier their pricing based on credit score ranges, so every 20-point improvement can meaningfully lower your rate.
If your score is below 620 today, an FHA loan may be your best path to homeownership while you continue building credit. Our advisors can walk you through your options based on exactly where you stand.
Ready to See What You Qualify For?
You don't need a perfect credit score to get a great mortgage — you just need the right lender and the right loan program. At All East Mortgage Advisors, we work with borrowers at every credit level to find the best path forward.
Whether you're ready to apply today or still working on your credit, we'll give you an honest assessment of where you stand and a clear plan to get you into the home you want.
Serving Massachusetts, New Hampshire, and Florida
NMLS Licensed. Equal Housing Opportunity.
This article is for informational purposes only and does not constitute financial or legal advice. Credit score impacts vary by individual. Consult with a licensed mortgage advisor for guidance specific to your situation.