How to Improve Your Credit Score Before Applying for a Mortgage

The fastest legitimate ways to lift your credit before a mortgage are to fix errors on your credit reports and to pay down credit card balances well below their limits. Start three to six months before you apply, because disputes take about a month and card balances only change your score after the issuer reports the new balance.

There is no trick that turns a thin or damaged file into an excellent one in a few weeks. What a short plan can do is remove mistakes, cut your reported balances and keep you from doing something during underwriting that sinks the loan. Use the checklist at the bottom to track each step.

Why your score matters for a mortgage

Your credit score affects whether you are approved, which loan programs you can use and the rate and fees you are quoted. Fannie Mae, which buys a large share of US mortgages, says a minimum credit score is not required for loans run through its automated system (Desktop Underwriter), which weighs the whole file instead. For manually underwritten loans it requires at least 620 on a fixed-rate loan and 640 on an adjustable-rate loan. Individual lenders often set higher minimums of their own, so ask yours what floor it uses.

For a NYC co-op, the board will usually pull your credit too. Boards set their own standards and do not publish a single cutoff, so a clean report matters there as well (see co-op financial requirements).

Step 1: Pull all three reports for free

Equifax, Experian and TransUnion each keep a separate file on you, and lenders usually look at all three. According to the Federal Trade Commission, the bureaus have permanently extended a program that lets you check each report once a week for free at AnnualCreditReport.com. You can also order by phone at 1-877-322-8228. Phone and mail orders are processed within 15 days.

The free reports do not include a credit score. Many card issuers and banks show you a score; your mortgage lender will pull its own when you apply.

Step 2: Find and dispute errors

Read every line. Common problems worth disputing include:

• Accounts you never opened (possible identity theft; report it at IdentityTheft.gov).
• Late payments you actually made on time.
• Paid-off or closed accounts still shown as open with a balance.
• The same debt listed twice, for example by the original creditor and a collector, both showing a balance.
• Wrong credit limits, which make your card use look higher than it is.
• Negative items older than the reporting period. The FTC says most negative information can be reported for seven years and bankruptcies for 10 years.

The Consumer Financial Protection Bureau (CFPB) says fixing an error generally means contacting both the credit bureau and the company that supplied the information (the "furnisher", such as your card issuer). Explain in writing what is wrong, include copies (never originals) of proof, and mark the error on a copy of the report. The CFPB publishes free sample dispute letters for both.

Under the Fair Credit Reporting Act, a bureau generally has 30 days to investigate, according to the FTC. It must send you the results in writing, and a free copy of your report if the dispute changed it. If the furnisher finds the information was wrong, it must notify all three bureaus. If the information is confirmed accurate, you can ask the bureau to add a statement about your dispute, and you can file a complaint with the CFPB if a problem continues.

Step 3: Lower your reported card balances

How much of your available revolving credit you use (credit utilization) is one of the quickest things to change. The CFPB notes that experts advise keeping it at no more than 30% of your total credit limit, and that paying in full each month is linked to the best scores.

• Pay before the statement closes. Issuers usually report the statement balance. Paying down before the closing date lowers the balance the bureaus see.
• Watch each card, not just the total. One maxed-out card can hurt even when your overall use is low.
• Don't close old cards to "clean up". Closing a card removes its limit, which can push your utilization up.

Lower card balances also help your debt-to-income ratio. Fannie Mae's rules say that if a card shows a balance but no required payment, the lender must count 5% of the balance as a monthly debt unless documents support a lower payment. A $6,000 balance can therefore count as $300 a month. See how lenders calculate debt-to-income.

Step 4: Keep everything else steady

The CFPB says to apply only for credit you need, because scoring formulas treat recent applications as a sign you need credit. Between now and closing:

• Pay every bill on time. Set up autopay for at least the minimum on every account.
• Don't open new cards, store cards or "buy now, pay later" plans you don't need.
• Don't finance a car or furniture for the new place until after closing.
• Don't co-sign anyone else's loan.
• Don't move large sums around without a paper trail. Lenders and co-op boards ask you to explain big deposits.

Step 5: Ask your lender about a rapid rescore

If you pay down a balance or win a dispute after your lender has already pulled credit, the new information may not show up for weeks. Some lenders can request a "rapid rescore", sending proof of the change to the bureaus so your file is updated faster. According to Experian, only your mortgage lender can request one, the lender pays the bureau's fee, and it is often done within two to five days once the lender submits proof. Not every lender offers it, so ask your loan officer whether it's worth it for your file, for example if a lower balance would move you into a better pricing tier.

A realistic timeline

1. 6 months out

   Pull all three reports

   Read each line, list errors and gather proof. Check your score with your bank or card issuer.

2. 5 months out

   File disputes

   Write to each bureau and each furnisher. Keep copies and certified-mail receipts.

3. 4–3 months out

   Pay down cards

   Target under 30% on each card and overall, paid before statement dates. Pull reports again to confirm disputes were fixed.

4. 2 months out

   Get pre-approved

   Compare lenders. See our mortgage pre-approval guide for documents.

5. Contract to closing

   Freeze your credit habits

   No new accounts, no big purchases on credit, no late payments. Lenders may re-check credit before closing.

What to expect

If your reports are accurate and your balances are already low, a few months of prep may change little, and that's fine: your job is to avoid surprises. The biggest gains usually come to people with real errors on file or high card balances. Late payments that really happened stay on your report for years, so the best remedy is a long run of on-time payments.

Once your credit is in shape, check what you can afford with the home affordability calculator and your ratio with the debt-to-income calculator.

Your credit prep checklist

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