Your credit score and credit history are important factors lenders evaluate when deciding whether to approve your mortgage and what interest rate you receive. Understanding how credit works, what affects your score, and how to strengthen it before applying for a home loan can help you secure the best terms possible.

Understanding Credit Scores in Mortgage Lending

What Credit Score Do You Need for a Mortgage?

While minimum requirements vary by loan type and lender, higher credit scores improve your chances of approval and access to more favorable loan terms. Most conventional lenders look for scores starting around the mid-600s, while government-backed loans may allow for lower credit scores.

How Your Credit Score Impacts Your Interest Rate

Your credit score and credit history don’t just affect whether you are approved, it can also influence your pricing. Higher credit scores typically qualify for lower interest rates, saving you potentially thousands of dollars over the life of your mortgage.

The Five Factors That Make Up Your Credit Score

Payment History

Payment history is the single largest factor in your credit score and reflects whether you pay your accounts on time. Just one missed payment can significantly impact your score, especially if it is more than 30 days overdue.

Credit Utilization

This measures how much of your available revolving credit you are currently using. Keeping balances low, ideally under 30% of available credit, can improve your score and signal responsible credit management.

Length of Credit History

The longer your accounts have been open, the more positive impact they can have. Keeping older accounts open and avoiding frequent account changes can help strengthen this category.

Credit Mix

Lenders like to see a healthy balance of different credit types, such as credit cards, auto loans, student loans, and mortgages. A diverse mix demonstrates experience managing various forms of debt.

Recent Credit Inquiries

Multiple new credit applications in a short period can temporarily reduce your score. These inquiries may signal financial stress or an increased risk of over-borrowing.

How Different Types of Credit Impact Mortgage Approval

Mortgage Payment History

Late or missed mortgage payments are viewed as serious red flags because they directly relate to housing debt responsibility. Even a single late mortgage payment (“mortgage lates”) can significantly affect approval or loan terms.

Revolving Credit (Credit Cards)

Late payments or high balances on credit cards can lower your score, but lenders typically view these as less severe than mortgage lates since credit card debt is unsecured. However, consistent on-time payments and low utilization are key to maintaining a strong profile.

Installment Loans

Late payments on installment loans, whether they be auto, student, or personal loans matter but generally carry less weight than missed housing payments. Still, they are included in your score and overall risk assessment.

Collections, Charge-offs, etc

Accounts in collections or charged off accounts can significantly harm your credit profile and may impact mortgage approval. Depending on the loan program, some may need to be settled or resolved before approval.

Mistakes to Avoid During the Mortgage Process

Before You Apply

• Avoid opening new credit accounts.

• Keep balances low.

• Make all payments on time.

• Review your credit report for inaccuracies and dispute errors early.

During the Application Process

• Do not make large purchases that increase your debt or raise your debt-to-income ratio.

• Avoid applying for new credit, which may trigger inquiries and change your score.

• Keep existing payments current to avoid sudden score drops.

Even small financial changes during underwriting can impact approval or your interest rate.

How to Improve Your Credit for Mortgage Approval

6-12 Months Before Applying

• Pay all accounts on time, every month.

• Ensure all recurring bills are set to auto-pay if possible.

• Keep credit utilization low, not just overall but per account.

• Avoid closing older accounts unless necessary.

• Start paying down balances aggressively.

3-6 Months Before

• Avoid opening new credit lines.

• Continue lowering balances.

• Monitor your credit for any unexpected changes.

1-3 Months Before

• Double-check that payments are being posted correctly.

• Refrain from large purchases or new debt.

Quick Wins

• Pay down revolving balances to reduce utilization.

• Dispute legitimate credit report errors.

• Catch up on any late payments as soon as possible. 

Frequently Asked Questions (FAQs)

What credit score do I need to buy a house?

Requirements vary by loan program, but higher scores generally make approval easier and help secure better interest rates.

How long does it take to improve my credit score?

Many borrowers can see noticeable improvement within 3-6 months with consistent, positive credit behavior.

Will checking my credit score hurt my chances?

No, checking your own score is a “soft inquiry” and does not impact your credit.

Can I get a mortgage with collections on my credit?

Possibly. Some loan programs may allow it, but the accounts may need to be settled or explained, and they may influence pricing and approval.

How many points will my score drop if I’m late on a payment?

It varies, but even a single late payment can cause a significant drop, especially if you previously had a strong score.