How to Fix Your Credit to Buy a House (Step-by-Step Timeline)

Q: What credit score do I need to buy a house in 2026?

It depends on the loan type. Conventional loans typically require a 620 minimum, FHA loans accept 580 (or 500 with a 10% down payment), and VA and USDA loans have no official minimum but lenders usually want at least 580–620. A higher score unlocks better rates—740+ is where you get the most favorable pricing. These thresholds can vary by lender.

Q: How far in advance should I start fixing my credit before buying a house?

Start at least 12 months out if your credit needs meaningful work. Six months is manageable if you mainly need to reduce utilization and dispute errors. Three months is the minimum window for a rapid rescore after making corrections. The earlier you start, the more options you have—rushing credit repairs during escrow is stressful and limited in what it can accomplish.

Q: Will disputing errors on my credit report delay my mortgage application?

Disputes in progress can complicate underwriting. Fannie Mae guidelines generally require that all disputes on derogatory accounts be resolved before loan approval. Dispute errors well before you apply—ideally six or more months out. If a dispute is pending during underwriting, ask your lender whether it affects your file; some loan types are less strict than others.

Q: Can I buy a house with a 580 credit score right now?

Yes, with an FHA loan. A 580 score qualifies for the standard 3.5% down payment requirement. Scores between 500 and 579 require 10% down. Keep in mind that many FHA lenders impose their own overlays—internal minimums above the official FHA floor—so some lenders may require 600 or 620 even for FHA. Shopping multiple lenders matters at this score range.

Q: Should I pay off old collections before applying for a mortgage?

It depends on the loan type and the collection account. FHA, VA, and USDA loans often allow unpaid medical collections to be ignored during approval. Conventional loans are stricter. Paying a collection can sometimes temporarily dip your score if it resets the account's activity date, so consult your loan officer before paying anything. Disputing inaccurate collections is almost always worthwhile.

Buying a home is probably the largest financial decision you will ever make, and your credit score is the single number that determines whether you qualify—and at what cost. A difference of 80 points on your score can translate to tens of thousands of dollars in extra interest over the life of a 30-year mortgage. The good news: with the right moves and enough runway, you can fix your credit before buying a house more predictably than most people realize.

This guide gives you a concrete, month-by-month plan. Whether you have 12 months or 3, there is something actionable you can do right now to improve your position before you walk into a lender's office.

Key Takeaways

FHA loans accept scores as low as 580 (3.5% down) or 500 (10% down)
Conventional loans generally require a 620 minimum; 740+ unlocks the best rates
Reducing credit utilization below 30% can raise your score in a single billing cycle
Disputing errors should be done at least 6 months before applying—not during underwriting
Never open new credit accounts or co-sign loans in the 90 days before closing
Rapid rescore lets your lender submit corrected data for a new score within days

Minimum Scores by Loan Type

There is no single answer to "what credit score do I need to buy a house" because the answer depends entirely on which loan program you use. Here is how the four main mortgage types stack up. Note that lenders can set their own minimums—called overlays—above these official floors.

Feature	Conventional	FHA	VA	USDA
Minimum Score	620	580 (3.5% down) / 500 (10% down)	No official minimum (lenders often 580–620)	No official minimum (lenders often 640)
Best Rate Score	740+	680+	660+	660+
Down Payment	3–20%	3.5–10%	0%	0%
PMI Required	Below 20% down	Yes (life of loan if <10% down)	No (funding fee instead)	Annual guarantee fee
Loan Limit (2026)	$806,500 (baseline)	Varies by county	No limit (full entitlement)	Income/area limits apply

Lender Overlays Change the Picture

Official minimums are a floor, not a guarantee. Many FHA lenders require a 620 internally even though the FHA officially allows 580. Shop at least three lenders—especially if your score is in the 580–640 range—because overlays vary widely between banks, credit unions, and mortgage brokers.

How Your Score Affects Your Rate

Lenders price mortgage risk using tiered score brackets. Moving up even one bracket can meaningfully lower your monthly payment and total interest paid. The numbers below are illustrative based on typical LLPA (loan-level price adjustment) tiers for conventional loans—your actual offers will vary by lender and market conditions.

Score Tier Impact on a $350,000 Mortgage (30-Year Fixed, Illustrative)

760–850: Best rate tier — lowest rate available
740–759: Near-best — minimal pricing adjustment
720–739: Small rate increase vs. top tier
700–719: Moderate increase; still competitive
680–699: Noticeable increase; refinancing later may help
660–679: Higher rate; consider FHA to compare
620–659: Significant premium; FHA often beats conventional here
580–619: FHA-only territory for most lenders

$40,000+

in additional interest a 620 borrower may pay vs. a 760 borrower on a 30-year $350K mortgage

Source: Consumer Financial Protection Bureau

That gap is why spending six months to raise your score 60 points is often worth far more than rushing to close at a worse rate. The math usually favors patience.

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Month-by-Month Prep Timeline

Use this timeline as a roadmap. If you have less than 12 months, skip ahead to the phase that matches your window—each phase builds on the last, but the later phases are the most critical.

12-Month Mortgage Credit Prep Timeline

12 Months Out

Pull All Three Reports and Set Your Baseline

Get your free reports at AnnualCreditReport.com. Review every account for errors—wrong balances, accounts that aren't yours, late payments that should have fallen off, and duplicate collection entries. This is your most important step because disputes take 30–45 days per round, and you may need multiple rounds for complex errors.

10–11 Months Out

File Disputes on All Inaccurate Items

Send FCRA dispute letters to each bureau reporting an error. Be specific: include the account name, account number, the error, and supporting documentation. Bureaus have 30 days to investigate. If they verify incorrectly, you can escalate or re-dispute with new evidence.

8–9 Months Out

Attack Your Credit Utilization

Pay down revolving balances aggressively. Your goal is utilization below 30% on every card and below 10% in total if possible. Unlike late payments or collections, utilization improvement shows up in your score as soon as the creditor reports the new balance—usually your next statement date.

6 Months Out

Resolve Collections Strategically

Talk to your loan officer before paying any collection account. Some collections are best disputed; others are best paid; some can be ignored depending on your loan type. Medical collections under $500 are excluded from FICO scoring in newer models. Non-medical collections on conventional loans require more scrutiny.

3 Months Out

Freeze New Credit Activity

Stop applying for any new credit. Every hard inquiry can cost 5–10 points and signals financial stress to an underwriter. Also avoid closing old accounts—closing a card reduces your available credit and can spike utilization overnight.

1 Month Out

Get Pre-Approved and Request Rapid Rescore if Needed

Apply for pre-approval with your preferred lender. If recent changes to your file haven't yet been reflected in your score—a paid-off card, a resolved dispute—ask your lender about a rapid rescore. This can update your score within 3–5 business days without waiting for a full reporting cycle.

Working With a Shorter Window?

If you have 60–90 days, focus exclusively on what moves the needle fastest: pay down revolving balances, dispute obvious errors (wrong personal info, duplicate accounts, zero-balance accounts still showing as open derogatory), and avoid any new credit applications. Accept that you may not solve everything before closing—plan to refinance once your score improves.

The Highest-Impact Fixes

Not all credit improvements are created equal. Some actions move your score dramatically within weeks; others take months to register. Here is what to prioritize when you have a home-buying deadline.

Dispute Inaccurate Negative Items
Errors are more common than most people expect—a Federal Trade Commission study found that 1 in 5 consumers had a verified error on at least one bureau report. A single inaccurate 30-day late payment can suppress your score by 60–110 points. Under the FCRA, bureaus must investigate your dispute within 30 days and delete items they cannot verify. This is the highest-leverage move available to you because it can remove score-suppressing negatives entirely, not just reduce their weight.
Reduce Credit Card Utilization to Under 30%
Utilization—your combined revolving balances divided by your combined credit limits—accounts for roughly 30% of your FICO score. It has no memory: if you were at 80% utilization last month and pay it down to 15% this month, your score reflects 15% the moment your card issuer reports the new balance. If you have the cash, this is the fastest way to raise your score before mortgage application.
Become an Authorized User on a Strong Account
If a family member has a credit card with a long history, low utilization, and perfect payment record, ask them to add you as an authorized user. You do not need to use the card. Their positive history on that account can show up on your report and immediately improve your average account age and utilization. This works especially well if your own file is thin or recent.
Handle Collections Strategically—Not Impulsively
Newer FICO and VantageScore models (FICO 9, FICO 10, VS 4) ignore paid collections entirely, which means paying them off removes their scoring impact. Older FICO 8—still the most widely used model in mortgage lending—still counts paid collections, though they weigh less. Ask your lender exactly which scoring model they pull, then decide whether paying the collection is worth it. Always get a pay-for-delete agreement in writing first.
Keep All Existing Accounts Open
The length of your credit history and your available credit both affect your score. Closing a card—even one you never use—reduces your total available credit and can spike your utilization instantly. It may also shorten your average account age over time. Unless a card has a fee you can't justify, keep it open and put a small recurring charge on it so the issuer doesn't close it for inactivity.

Late Payments Are Hard to Undo

Legitimate late payments cannot be disputed successfully—they can only age off (7 years from the original delinquency date). However, if you have a strong payment history with a creditor and made a one-time mistake, a goodwill letter asking them to remove the late mark sometimes works. It is not guaranteed, but it costs nothing to try.

What Not to Do During Underwriting

The period between pre-approval and closing is when many buyers accidentally sabotage their own mortgage. Lenders often pull a second credit report right before closing—called a "soft pull" or "refresh"—to verify nothing has changed. Here is what to avoid from the moment you go under contract.

Underwriting Don'ts: What to Avoid Between Pre-Approval and Closing

New credit cards: Lowers average account age, adds inquiry
Auto or personal loans: Changes your debt-to-income ratio
Co-signing for anyone: The debt shows on your report immediately
Large deposits (unexplained): Triggers asset documentation requests
Closing credit accounts: Raises utilization, may reduce score
Disputing active accounts during underwriting: Can freeze verification; resolve disputes before applying
Changing jobs: Not a credit issue, but can delay approval

Underwriters are methodical. Any change to your credit profile between pre-approval and closing can require additional documentation, trigger a new review, or—in the worst case—cause the lender to pull back the approval. The safest rule: make no financial moves without checking with your loan officer first.

Rapid Rescore: The Shortcut for Tight Deadlines

Normal credit reporting runs on a monthly cycle. If you pay off a credit card or get a dispute resolved on the 5th of the month and your lender pulls credit on the 10th, the update may not be reflected yet. Rapid rescore changes that.

Through rapid rescore, your lender submits documentation of account changes directly to the credit bureaus and requests an expedited score update. Results typically come back in 3–5 business days. It is not available to consumers directly—only through a lender or mortgage broker.

Rapid Rescore: Key Facts

Who can request it: Your lender or mortgage broker only
Turnaround: Typically 3–5 business days
Cost: Often $25–$50 per account per bureau (lender may absorb)
Best use cases: Paid-off balances, resolved disputes, corrected errors
What it cannot do: Remove legitimate negative items; it only reflects documented changes

Rapid Rescore Can Be a Game-Changer

If you are 15 points away from the next rate tier and you just paid off a card, ask your lender about a rapid rescore before they finalize your rate. Even moving from 699 to 720 can lower your rate enough to justify the cost of the rescore many times over across the life of the loan.

One important caveat: rapid rescore only works if the underlying account change is real and documentable. You need a payoff letter, dispute resolution confirmation, or similar evidence. It is not a workaround for negatives you cannot otherwise address.

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