A mortgage is the largest credit decision most people make, and small differences in your credit profile can affect the rate you're offered. Lenders commonly review reports from all three bureaus. Starting early gives you time to correct errors, which can take more than one 30-day investigation cycle, and to let good habits show up.
Key takeaways
- Start 6 to 12 months before you apply if you can. Errors take time to fix.
- Check all three reports; mortgage lenders commonly review all three.
- Lower revolving balances before applying, and pay before statement dates.
- Avoid new credit, new cards, and big financed purchases until after closing.
- Rate shopping within a short window is generally counted as one inquiry for scoring.
A realistic timeline
| When | What to do |
|---|---|
| 6 to 12 months out | Pull all three reports at AnnualCreditReport.com. Dispute errors. Set autopay on everything. Start paying down card balances. |
| 3 to 6 months out | Confirm disputes resolved at every bureau. Keep balances low. Avoid opening new accounts. Gather documents a lender will ask for. |
| 1 to 3 months out | Compare lenders and loan programs. Get preapproved. Lift any freezes at the bureaus lenders will use. |
| Application to closing | No new credit, no co-signing, no big financed purchases, no closing old accounts. Keep paying everything on time. |
A 12-month checklist
| When | What to do |
|---|---|
| 12 months out | Pull all three reports; dispute errors; set autopay everywhere |
| 9 months out | Re-check results; follow up on anything verified; avoid new accounts |
| 6 months out | Work balances down; gather documents for any past problems |
| 3 months out | Get preapproved; pay cards down before statement dates |
| Application to closing | No new credit, no big purchases on credit, keep paying on time |
Your timeline may be shorter. The order still holds: errors first, balances next, then quiet credit until closing.
Check all three reports, carefully
Mortgage lenders commonly pull a combined report with data from all three bureaus, and some use a middle score. An error at a single bureau can matter. Look especially for wrong late payments, collections that should show paid, duplicate debts, and balances that haven't updated. See why your three reports differ.
Lower utilization strategically
Amounts owed are about 30% of a FICO Score's weighting (FICO). Card issuers usually report your statement balance, so paying down before the statement closing date lowers what's reported. Use the utilization calculator to find the exact dollars to get under 30% or 10% overall and per card.
Paying down revolving debt can also improve your debt-to-income ratio, which lenders weigh separately from your score (CFPB).
What to avoid before and during the process
- Opening new cards or loans; new inquiries and accounts can lower scores and change your debt-to-income ratio.
- Financing furniture or a car before closing.
- Closing old cards, which can reduce available credit and raise utilization.
- Co-signing for anyone.
- Missing any payment, even on small accounts.
- Moving large sums of money without documentation; underwriters ask about deposits.
Lenders may check your credit again before closing, so the quiet period lasts until you have the keys.
Applying with a co-borrower
If you're buying with a partner, both of your credit files typically matter, and lenders often weigh the lower scores more heavily. Each of you should pull all three reports early, fix errors, and lower balances. Decide together whether applying jointly or in one name makes more sense, and ask your loan officer how each choice affects the rate and the amount you can borrow.
Rate shopping without fear
Comparing offers from several lenders is smart. Scoring models generally count multiple mortgage inquiries within a short window as a single inquiry, commonly 14 to 45 days depending on the model (FICO). Do your comparison shopping within a few weeks.
Collections and old negatives
Ask your loan officer before paying old collections. Loan programs have their own rules, and the best move depends on the debt and its age. If a collection is inaccurate, dispute it. If it's accurate, see pay-for-delete explained and debt validation for options.
What underwriters look at besides your score
- Debt-to-income ratio: how your monthly debt payments compare with your income. Paying down a card can help both your utilization and this ratio.
- Recent payment history: late payments in the last year or two tend to draw more attention than older ones.
- Recent credit activity: new accounts or inquiries during the process may need an explanation.
- Collections, judgments, and bankruptcies: lenders and loan programs have their own rules about these.
- Explanations: underwriters may ask for a letter explaining a late payment, an inquiry, or a gap.
The CFPB's Buying a House tools walk through the full process.
Credit isn't the only lever
If your scores aren't where you want them, other parts of the application can still help: a larger down payment, lower monthly debts, steady income documentation, and cash reserves after closing. Some loan programs are designed for buyers with lower scores or smaller down payments, each with its own trade-offs. A loan officer can show you how your options change at different score tiers, which helps you decide whether to apply now or spend a few more months on your credit.
Between application and closing
Many lenders re-check credit before closing. Until you have the keys:
- Keep paying every account on time.
- Don't open new cards or loans, including store financing for furniture.
- Don't close accounts or move large sums without asking your loan officer.
- Avoid co-signing for anyone.
- Respond quickly to document requests.
Fixing an error mid-process
If you find an error after applying, tell your loan officer right away and gather proof. A normal dispute can take up to 30 days. Some lenders can request an expedited update of your file through their credit reporting vendor after you document a correction or paydown, often called a rapid rescore. Only the lender can request it, so ask whether it's available. Learn the standard process in how to dispute credit report errors.
Prefer help with the legwork? CreditGod reads all three reports, flags items that may be inaccurate, and drafts disputes for your approval. You can always dispute for free on your own.
Frequently asked questions
How far in advance should I prepare my credit for a mortgage?
Ideally 6 to 12 months. Disputes can take 30 to 45 days per round, and lower balances and on-time payments need time to show up in your reports.
Do mortgage lenders check all three credit bureaus?
Commonly, yes. Many mortgage lenders review a combined report with data from all three bureaus.
Will shopping for mortgage rates hurt my credit?
Scoring models generally treat multiple mortgage inquiries within a short window as one inquiry. Keep your rate shopping within a few weeks.
Should I close credit cards before applying for a mortgage?
Usually not. Closing cards can reduce available credit and raise utilization. Ask your loan officer about your specific situation.
What is a rapid rescore?
A process some mortgage lenders use to have your credit file updated quickly after you document a correction or paydown. Only the lender can request it, so ask your loan officer whether it's available.
Can I get a mortgage with a recent late payment?
Possibly. Lenders and loan programs set their own rules, and recent lates tend to draw more attention. Ask your loan officer, and if the late is inaccurate, dispute it with proof as early as possible.
Sources and further reading
This guide is general educational information, not legal or financial advice, and CreditGod is not a law firm. You can dispute inaccurate information with the credit bureaus yourself, for free. Only inaccurate, incomplete, or unverifiable information can be disputed; results vary. Rules change, so check the CFPB, FTC, or a qualified professional about your situation. Read our editorial standards.