The Quick Read: Start with the free fixes. Pull all three credit reports, dispute errors, pay every bill on time, and shrink your card balances. Those moves can lift your score and lower what the loan costs, and a buyer with several months of runway has the most room to work. Fannie Mae’s automated system no longer has a 620 floor, but your score still shapes both approval and pricing.
Key Takeaways
- Errors, balances, and late payments are the levers you control. Everything else is secondary.
- The score your lender uses comes from a three-bureau report. It may not match your phone app.
- Your score band and your down payment work together to set the price of the loan.
- Don’t open or close accounts, and don’t finance anything, between pre-approval and closing.
- Paying down debt helps two things at once: your score and your debt-to-income ratio.
Why Does Your Score Still Matter for a Conventional Loan?
Your score matters in two places: whether the file gets approved, and what it costs. Fannie Mae removed the 620 minimum from its automated underwriting system for files created on or after November 16, 2025, according to its DU credit score update notice. The system now weighs a set of credit-risk factors instead of one cutoff. The same notice says lenders remain responsible for meeting the other requirements.
Conventional payment estimate
The starting figures are an example price at the first-time buyer’s minimum down payment. Replace them with yours.
Editable benchmark: 7.32% as of October 22, 2026 · Freddie Mac 30-year average via FRED®. A conventional market reference, not a conventional loan quote.
Estimate seeded at the low end of Fannie Mae’s published range (0.58%–1.86% a year); the insurer prices the actual premium on the score and the leverage. Applies only above 80% loan-to-value.
Illustrative starting assumptions: a $350,000 price, the first-time buyer’s minimum down payment, a thirty-year term at the current Freddie Mac benchmark, mortgage insurance at the low end of Fannie Mae’s published range, and property taxes and insurance estimated at typical national rates. Every field is editable.
Illustrative estimate only — not a Loan Estimate, approval, quote, or commitment to lend. The rate field carries the weekly Freddie Mac thirty-year conventional benchmark, a market reference and not a conventional loan quote; your rate is set by the lender at lock. The mortgage insurance figure is an editable estimate seeded from Fannie Mae’s published typical range, not a premium quote; the insurer prices the actual premium, and the cancellation month assumes scheduled payments with no extra principal and no change in value. Taxes, insurance and dues are editable estimates; closing costs are not included. Conforming loan limits apply by county. Licensed in sixteen states for consumer mortgages.
So did credit stop mattering? No. The system still looks hard at your credit, along with your down payment, reserves, income, employment, and debt load.
Real lenders add their own rules on top. Across the wholesale programs we place files with, conventional loans start at a 620 decision score. Manually underwritten adjustable-rate loans start at 640. A 50% total debt ratio is the ceiling for most automated findings. Those are program figures, subject to lender guidelines and full file review, and nothing here is a commitment to lend.
Pricing is the second place your score shows up. Fannie Mae publishes a grid of loan-level price adjustments that depends on your credit score band and your loan-to-value ratio together, along with occupancy, loan purpose, and property type. Crossing into a higher score band can shrink the adjustment. The grid changes often, so this article won’t quote its numbers. Your loan officer works from the current version.
If you want to see how these mechanics fit your file, Lendmire’s conventional loan programs page lays out the leverage and mortgage insurance rules.
How Is Your Score Actually Calculated for the Loan?
The lender pulls a tri-merge report. That means credit files from all three bureaus, each with its own score. Per Fannie Mae’s Selling Guide credit score section, the representative score is generally the middle of three scores. If only two exist, it’s the lower. If one exists, that’s the one. Check the guide wording for how co-borrower scores combine.
Two details trip people up:
- The lender chooses the model. Classic FICO is accepted, and VantageScore 4.0 is now an optional choice for lenders, per FHFA. The same model has to be used for every borrower on the loan.
- Your app score is a cousin, not a twin. A free app may use a different model and a different bureau mix. Expect a gap. A 10- or 20-point difference between your app and your lender’s pull is normal and not a sign anyone made an error.
Manually underwritten loans are a narrower lane. They must use Classic FICO, and they carry score minimums that automated files no longer have.
What Should You Do First? Pull Your Reports.
Start with all three reports, not your score. The score is a result. The report is where the fixable problems live.
Look for mixed files, accounts that belong to someone else, closed accounts shown as open, and authorized-user accounts listed as yours. The CFPB keeps a list of common credit report errors worth reading before you start.
To dispute an error, write to the credit reporting company and attach your documents. Then send the same dispute to the company that reported the item. The CFPB explains how to dispute an error and offers free sample letters. You never need to pay anyone to do this.
Disputes take time to resolve, so start early. Fixing an error is often the single biggest return on effort, because a wrong late payment or a stranger’s account can drag the score for no reason.
Which Moves Raise Your Score, and How Fast?
Here’s how the main levers compare. The speeds are directional, not promises. Results depend on your starting file.
| Action | Helps | Speed | Risk |
|---|---|---|---|
| Dispute errors | Score | Varies | Low |
| Pay on time, every time | Score | Slow, steady | Low |
| Cut card balances | Score and DTI | Often fastest | Low |
| Keep old cards open | Score | Passive | Low |
| Open new credit | Nothing good | n/a | High |
| Authorized-user trick | Score, maybe | Varies | Medium |
Payment history comes first
On-time payment is the largest factor in scoring models. One late payment can hurt, and a string of on-time ones repairs the damage slowly. Set autopay for at least the minimum on every account. A missed payment is the easiest way to undo months of work.
Utilization is the quick lever
Utilization is how much of your card limits you’re using. Lower is better, and there’s no magic number. The part people miss is timing. Card companies usually report your balance on the statement date, not the due date. If you pay a balance down before the statement closes, the lower number is what gets reported.
Picture a buyer carrying heavy balances on two cards who plans to apply in four months. Paying those down ahead of each statement date means the bureaus see low balances well before the lender pulls. Nothing else in the plan changes, and the file can look meaningfully better.
Paying down debt helps a second way. Smaller balances mean smaller monthly obligations, which lowers your debt-to-income ratio. We’ll come back to that.
Leave old accounts alone
The CFPB’s guidance on getting your money in order says not to close unused cards unless they carry an annual fee. Closing a card shrinks your total available credit, which can push utilization up. It also shortens the average age of your accounts over time.
New credit is a trap
Skip new cards, car loans, and store financing before and during the mortgage process. Each application can add an inquiry, and a new balance changes your debt picture. The CFPB says an inquiry typically has a small negative effect, so one inquiry isn’t a disaster. The bigger risk is a new payment that changes your debt ratio right before closing.
Authorized-user accounts: handle with care
Being added to someone else’s old, well-managed card can help your file. It can also hurt if their balances run high or they pay late, because their habits become part of your report. Add only an account you’ve checked, held by someone you trust.
Will Shopping Lenders Hurt Your Score?
Not if you keep it tight. The CFPB says multiple mortgage credit checks made within a short window are recorded as a single inquiry, per its explanation of what happens when a lender checks your credit. The length of that window varies by scoring version, and some use a shorter one. The safe move is to do your comparison in as compact a stretch as you can.
Compare offers, not just one lender’s first answer. A broker can run your file across several wholesale lenders, which keeps the shopping compact.
What About Collections, Late Payments, and Bigger Problems?
Old negatives don’t all work the same way, and some well-meant moves backfire.
Late payments. The only fix is time and a clean record going forward. Bring the account current and keep it that way.
Collections and charge-offs. Don’t pay or settle one without asking your loan officer first. A lender may want it handled, or it may not matter for your file. Either way, get the guidance before you send money.
Foreclosure, bankruptcy, short sale, or deed-in-lieu. These carry waiting periods set by the agencies. Across the programs we place, the agency waits are four years from a chapter 7 discharge, seven years from a foreclosure, and four years from a short sale or deed-in-lieu. Shorter periods can apply with documented extenuating circumstances. The clock runs from the completion, discharge, or dismissal date, and you must re-establish credit. The lender makes the final call, per Fannie Mae’s guide section on derogatory events.
Credit repair companies. The CFPB warns that firms promising fast fixes, especially ones that charge upfront fees, are often scams. Everything they’d do for you, you can do free. If your score is under 620, the CFPB points to HUD-approved housing counseling instead.
What Does a Realistic Timeline Look Like?
It depends on where you start. Several common paths follow:
You’re close to your target. The CFPB’s framing is that a buyer six months or more from purchase has time to improve. For a file that’s near a band edge, the plan is simple:
1. Pull reports and dispute errors immediately.
2. Set autopay everywhere.
3. Pay balances down before each statement date.
4. Stop all new credit.
5. Ask your loan officer whether a rapid rescore applies once balances are paid. That’s a lender-requested update that can reflect new information faster than waiting for the normal cycle.
You need real rebuilding. Expect a longer runway. Disputes, a full year of on-time payments, and steady paydowns do the work. A lender can run a pre-approval review now so you know exactly which items matter, and you aren’t guessing.
Worked Example: A Buyer With Mixed Credit
Say a buyer plans to put 5% down on a one-unit primary residence. That’s the standard purchase leverage for the programs we place, at 95% LTV. First-time buyers can reach 97% LTV with 3% down on a fixed rate. This hypothetical buyer is near a score band boundary, with high card balances and one wrongly reported account. The exact numbers vary by lender and program and follow a full review of property, leverage, and credit.
Over a few months, the buyer disputes the wrong account, pays down cards ahead of statement dates, and opens nothing new. The score moves up a band. The lender’s pricing grid now starts from a smaller adjustment, and debt-to-income improves because monthly card payments shrank.
This is an illustration, not a prediction. Real results depend on your file, and nobody can promise a specific point gain.
Score vs. Debt-to-Income: Which Moves Help Which?
They’re different measures, and people blur them.
- Score helps: on-time payments, error disputes, lower utilization, old accounts kept open.
- DTI helps: smaller monthly debt payments, more income, paying off installment loans.
- Both: paying down card balances.
Paying off a car loan, for instance, can lower DTI without moving your score much. Paying down cards can do both. Know which problem your file has before you choose where to spend cash.
Between Pre-Approval and Closing: Do and Don’t
Do:
- Keep paying every account on time.
- Keep balances low.
- Unfreeze any credit freezes before the lender pulls, and confirm the timing with your loan officer.
- Tell your loan officer about job or income changes.
Don’t:
- Open a card, finance furniture, or buy a car.
- Close old accounts.
- Move large sums without documenting them.
- Co-sign for anyone.
When Should You Apply Now Instead of Waiting?
There’s a point of diminishing returns. If your score already clears the program minimum and sits comfortably in a good band, extra months of polishing may not change much. Waiting also costs you if prices or your plans move.
Apply now when the next score band is far away or your timeline is fixed. Keep improving when you’re close to a band edge, or when disputes are still open. A lender can show you where your file sits today, and that answer beats guessing.
A strong down payment can offset a weaker score, and the reverse is also true, because pricing weighs both together. Also consider a co-borrower carefully. For many files the representative score comes from the lower borrower score, so a co-borrower with weaker credit can hold the file back.
Thin or no credit has its own path. Fannie Mae makes exceptions for loans where no borrower has a score, using nontraditional credit. Freddie Mac’s credit assessment section allows some borrowers without a usable score if at least one borrower has one, and it limits this to one-unit primary residences. Individual lenders may still set stricter rules than the agencies.
Key Terms Defined
Representative score: The single score the lender uses, generally the middle of the three bureau scores.
Tri-merge report: A credit report that combines files from all three bureaus.
Loan-level price adjustment: A pricing add-on that depends on your score band, LTV, and loan features.
Utilization: The share of your card limits you are using.
Debt-to-income ratio (DTI): Your monthly debt payments compared with your monthly income.
Rapid rescore: A lender-requested update that can reflect paid debts or corrected errors on your report.
Frequently Asked Questions
How fast can a score improve?
It depends on what’s holding it down. Correcting an error or lowering card balances can show up within a reporting cycle or two, while late payments and older negatives need much more time. Nobody can promise a specific point gain.
Should I close cards I don’t use?
Usually not. Closing a card cuts your available credit and can push utilization up. The CFPB advises keeping unused cards open unless they carry an annual fee.
Why is my app score different from my lender’s?
Your lender pulls all three bureaus and uses a specific scoring model. Your app may use another model or only one bureau. The lender’s number is the one that counts for the loan.
Do I need to pay off collections before applying?
Ask your loan officer first. Whether it matters depends on the account and the program. Paying or settling without guidance can sometimes backfire, so get direction before sending money.
Does a mortgage insurance requirement change if my score improves?
Mortgage insurance is required above 80% LTV on conventional loans. You can ask to cancel it at 80% of the original value, and the servicer must end it automatically at 78%. A better score can improve how the loan is priced, subject to lender guidelines.
Where to Go From Here
Credit work pays off most when it starts early and stays boring: fix errors, pay on time, lower balances, and open nothing new. If you’re curious about the debt-side effects, Lendmire’s piece Will a Conventional Cash-Out Refinance Hurt Your Credit Score? walks through how a new loan interacts with your file.
If you are buying a home and want to see whether a conventional loan fits your file, Lendmire can help you compare the options and what each one asks of the file.
For your own numbers, request a scenario review with Lendmire.
About Lendmire
As a mortgage broker (NMLS# 2371349), Lendmire helps homeowners and home buyers in 16 states with FHA, VA, conventional and jumbo purchase and refinance loans arranged through wholesale lenders. Lendmire is never the lender; program terms are set by the lender and the agency guidelines. Scotsman Guide named Lendmire a Top Mortgage Workplace in both 2025 and 2026.
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References
1. Fannie Mae – DU credit score update notice
2. Fannie Mae Selling Guide B3-5.1-01
3. FHFA
4. CFPB: What Are Common Credit Report Errors That I Should Look for on My Credit Report
5. CFPB – How do I dispute an error
6. CFPB – Get your money situation in order
7. CFPB – What happens when a mortgage lender checks my credit
8. Fannie Mae Selling Guide B3-5.3-07
9. Freddie Mac Seller/Servicer Guide §5201.1
This article is part of Lendmire’s conventional loan program — full qualification details, guidelines, and scenarios live on the program page.
Related reading: Can You Use Stocks as Collateral for a Conventional Loan? · Can You Double Your Payment on a Conventional Loan Without a Penalty? · Conventional Loan Options and PMI for a High Credit Score
Brandon Miller
Founder & CEO, Mortgage Loan Originator, Lendmire LLC
- Mortgage Loan Originator · NMLS# 1129696 · Verify on NMLS Consumer Access
- North Carolina Real Estate Broker · License# 343312 · Verify on NCREC
- North Carolina Insurance Producer · License# 19053198 · Property, Casualty, Life, Health · Verify on NAIC SBS
- Lendmire LLC · Firm NMLS# 2371349 · Verify firm licensure
Compliance and disclosures. Lendmire (NMLS# 2371349) is a licensed mortgage broker and is not a direct lender, depository institution, financial advisor, or tax professional. Content in this article is general market analysis and educational information — not financial, legal, or tax advice for any specific situation. Lendmire does not guarantee loan approval; every transaction is subject to underwriting by the funding lender. Mortgage pricing and loan program guidelines are subject to change at any time without notice and vary by borrower characteristics, property type, and state regulations. Lendmire complies with Equal Housing Opportunity. Licensure verification: NMLS Consumer Access.