Your credit score plays a huge role in buying a home. It affects whether you qualify for a mortgage, what interest rate you get, and how much house you can afford. The good news: you do not need a perfect score, and you can often raise your score meaningfully in 30 to 90 days with focused effort.
This guide gives you a practical plan — what to do first, what actually moves the needle, and what to avoid while you prepare for a mortgage application.
What Score Do You Actually Need?
Different loan types have different general expectations. These are widely used guidelines, though individual lenders set their own rules:
- Conventional loans: typically 620 or higher, with the best rates going to scores in the mid-700s and up.
- FHA loans: often available with scores as low as 580 (with a smaller down payment requirement at higher scores).
- VA and USDA loans: no official minimum set by the programs, but most lenders look for around 620.
You do not need an 800. Moving from 640 to 700, for example, can meaningfully improve your rate and options. Know your target before you start — ask a lender or check program guidelines for the loan type you plan to use.
How Credit Scores Work (The Short Version)
Your FICO score — the score most mortgage lenders use — is built from five pieces:
- Payment history (about 35%) — the biggest factor. Late or missed payments hurt the most.
- Amounts owed / credit utilization (about 30%) — how much of your available credit you are using.
- Length of credit history (about 15%) — older accounts help.
- New credit (about 10%) — opening several new accounts in a short time can lower your score.
- Credit mix (about 10%) — having different types of credit (cards, installment loans) can help slightly.
- Do not change jobs if you can avoid it.
- Do not make large, unexplained deposits or withdrawals.
- Do not co-sign anyone else's loan.
- Do not close accounts or open new ones.
- Do not pay off old collections without a plan. Paying a very old collection account can sometimes update its status and temporarily lower your score. If you have collections, talk to your lender or a nonprofit housing counselor about the best approach before paying.
- Do not use credit repair companies that promise fast fixes. No company can legally remove accurate negative information. Many charge high fees for things you can do yourself for free, and some are outright scams.
- Do not max out cards "just this once." A single high-utilization month right before your score is pulled can cost you real points at the worst time.
- Do not dispute everything on your report. Frivolous disputes can backfire — some mortgage underwriters require disputes to be resolved before approval, which can delay your loan.
For a 30–90 day plan, focus on the first two. They make up about 65% of your score and are the fastest to influence.
The 30-Day Sprint: Quick Wins
Pay Down Credit Card Balances
This is the single fastest way to raise your score. Credit utilization — your balances divided by your credit limits — has a big, fast impact. Aim to get every card below 30% of its limit, and below 10% if you can.
Example: a card with a $5,000 limit and a $2,500 balance is at 50% utilization. Paying it down to $500 (10%) can noticeably lift your score, sometimes within one billing cycle after the lender reports the new balance.
Focus on cards first, not installment loans like auto or student loans. Paying down revolving balances moves utilization; paying extra on installment loans barely affects your score.
Bring Any Past-Due Accounts Current
If you have late payments, get current now. A 30-day late payment hurts, but an account that is currently past due hurts more. Bring it current and keep it current — recent on-time payments start rebuilding your history immediately.
Check Your Credit Reports for Errors
Get your free reports and look for mistakes: accounts that are not yours, wrong balances, late payments that were actually on time, or old debts that should have aged off. If you find errors, dispute them with the credit bureau. Removing even one error can add points.
Do NOT Close Old Credit Cards
Closing a card reduces your total available credit, which can spike your utilization ratio and lower your score. It can also shorten your average account age over time. Keep old cards open — just stop using them or use them lightly and pay in full.
Days 30–60: Build Momentum
Set Every Bill to Autopay (At Least the Minimum)
Payment history is the largest scoring factor, and one new late payment during your prep period can undo weeks of progress. Put every account — credit cards, utilities that report, loans — on autopay for at least the minimum due. You can always pay more manually.
Keep Balances Low Through the Statement Date
Here is a detail many people miss: lenders usually report your balance as of your statement closing date, not your payment due date. If you charge $2,000 during the month but pay it off after the statement closes, the bureau may still see a high balance. To show low utilization, pay your card down before the statement closing date.
Become an Authorized User (Carefully)
If a family member has an old credit card with a long, clean payment history and low utilization, being added as an authorized user can help your score. The account's history appears on your report. Only do this with someone you trust completely — and make sure the card issuer reports authorized users to the bureaus.
Leave New Credit Alone
Do not open new credit cards, finance furniture, or take out new loans while preparing for a mortgage. Each application creates a hard inquiry, and new accounts lower your average account age. Lenders also get nervous seeing new debt appear right before a mortgage application.
Days 60–90: Protect Your Progress
Avoid Big Financial Changes
Mortgage lenders re-check your credit and finances before closing. In the months before and during your application:
Stability is what lenders want to see.
Talk to a Lender Early
Around day 60, consider getting preapproved. A preapproval tells you exactly where you stand, what rate you qualify for, and how much house you can afford. If your score is still short of your target, the lender can tell you precisely what would help — and you will still have time to act.
Keep Doing What Works
The boring truth: the last 30 days are about consistency. Keep utilization low, pay everything on time, and let the positive history accumulate. Scores reward steady behavior.
What NOT to Do
Frequently Asked Questions
How fast can my credit score go up?
It depends on what is holding it down. Paying down high card balances can raise your score within 30–45 days, once lenders report the new balances. Recovering from late payments or collections takes longer — often several months of clean history. There is no instant fix, but 30–90 days of focused work usually produces real improvement.
Will checking my own credit hurt my score?
No. Checking your own score or reports is a "soft inquiry" and never affects your score. Only applications for new credit create hard inquiries. Check freely.
Should I pay off my car loan before applying for a mortgage?
Not necessarily for the score — installment loan balances have a small scoring impact. But paying one off reduces your monthly debt obligations, which improves your debt-to-income ratio, and lenders care about that too. Ask your lender which helps your specific situation more.
Can I buy a house with a 600 credit score?
Possibly. FHA loans are designed for lower-score borrowers, and some lenders work with scores in the low 600s or even high 500s. Expect higher interest rates and possibly mortgage insurance costs. Improving your score even modestly before applying can save you significant money.
How many points do I need to get a better mortgage rate?
There is no fixed number, but crossing into the next lender tier — for example, from the mid-600s to 700, or 700 to 740 — often unlocks noticeably better pricing. Even 20–40 points can matter. Your lender can show you exactly how your score maps to available rates.
This content is for general educational purposes only and is not professional financial advice.
