What lenders look for when you explore for a mortgage
When you explore for a mortgage, the lender pulls your credit report and credit score. They use these to decide whether to lend you money and what interest rate to charge. A higher credit score means lower interest rates — the difference between a 620 score and a 750 score can cost you tens of thousands of dollars over the life of a loan.
Lenders also look at your payment history (whether you pay on time), how much debt you already carry, how long your credit accounts have been open, and whether you have recently opened many new accounts. They want to see that you handle money responsibly over time, not just that you have a high score today.
Most conventional mortgages require a credit score of at least 620, though 740 and above gets you the best rates. If your score is below 620 or you have no credit history yet, you will need to build it before a lender will consider you.
Key Takeaways
- Your credit score is built from five factors: payment history (35%), amounts owed (30%), length of credit history (15%), credit mix (10%), and new credit (10%).
- A student credit card, secured card, or credit-builder loan are the fastest ways to start a credit file if you have none.
- Paying every bill on time, keeping balances below 30% of your credit limit, and keeping old accounts open all raise your score over time.
- Building credit takes months to years — there is no shortcut — but starting now means you can be mortgage-ready sooner.
Starting from scratch: which account type builds credit fastest
If you have no credit history, you need to open an account that reports to the three credit bureaus (Equifax, Experian, and TransUnion). Not all accounts do. A debit card, for example, does not. A student credit card, secured credit card, or credit-builder loan all do.
A student credit card is designed for people with little or no credit history. It usually has a lower credit limit (often $500 to $2,500) and may charge an annual fee. The advantage is that you use it like a regular card — you make purchases and pay the bill each month. This builds a record of on-time payments quickly. You arrived here from the student cards section, so you already know how these work.
A secured credit card requires you to put down a cash deposit, usually $200 to $2,500. That deposit becomes your credit limit. You use the card like a regular card, and after 6 to 18 months of on-time payments, the issuer may convert it to an unsecured card and return your deposit. This is useful if you cannot get approved for a student card or if you have damaged credit you are rebuilding.
A credit-builder loan works differently. You borrow a small amount (usually $500 to $1,000) from a credit union or online lender, but the money goes into a savings account you cannot touch until you repay the loan. You make monthly payments, and those payments are reported to the credit bureaus. After you finish paying, you get the money back. This is slower than a credit card but very effective because it shows you can handle a loan.
The five factors that make up your credit score
Payment history (35% of your score) is the single largest factor. This means paying every bill on time, every month. One late payment can drop your score 100 points or more. Set up automatic payments from your bank account if you tend to forget, or set phone reminders a few days before the due date.
Amounts owed (30% of your score) is how much of your available credit you are using. If you have a $1,000 credit limit and a $300 balance, you are using 30% — that is the target. Using more than 30% signals to lenders that you are stretched thin. Using less than 10% is ideal. Pay down your balance before the statement closes, not just before the due date.
Length of credit history (15% of your score) rewards you for keeping accounts open over time. The older your oldest account, the better. This is why closing old credit cards can hurt your score — it shortens your average account age. Keep old accounts open even after you pay them off.
Credit mix (10% of your score) means having different types of credit: credit cards, installment loans, car loans, student loans. A mortgage is an installment loan, so lenders want to see that you have handled other types of debt responsibly. If you only have credit cards, adding a credit-builder loan or car loan helps.
New credit (10% of your score) tracks how many new accounts you have opened recently. Opening many accounts in a short time signals risk — it looks like you are desperate for credit. Space out new accounts by at least six months.
Building your score month by month
Once you have an account open, the work is consistent and straightforward: pay on time, keep balances low, and wait. Your score will not jump overnight. Most people see meaningful improvement within three to six months of on-time payments, and significant improvement within a year.
Set up automatic payments for at least the minimum due on every credit card and loan. Missing a payment by even one day can trigger a late fee and a report to the credit bureaus. If you have a history of late payments, this is the single most important change you can make.
If you have existing debt, focus on paying down balances to below 30% of your limit. If you have a $5,000 credit limit across all cards, aim to owe no more than $1,500. This matters more than paying off the entire balance — you do not need to carry zero debt to build credit, and in fact, lenders want to see that you use credit responsibly.
Do not close old accounts after you pay them off. An old account with a zero balance still helps your score by increasing your average account age and your total available credit. Closing it removes both benefits.
How long it takes to reach mortgage-ready credit
If you start with no credit history, you can reach a mortgage-ready score (usually 640 to 680 for a conventional loan) in 12 to 24 months of consistent on-time payments and low balances. If you are rebuilding after damage (late payments, collections, or bankruptcy), it takes longer — typically two to four years.
The timeline depends on what is on your report. A single late payment from five years ago hurts less than one from last month. Collections accounts and charge-offs stay on your report for seven years but lose impact over time. Bankruptcy stays for seven to ten years depending on the type.
Start building now, even if you do not plan to buy for two or three years. The sooner you open an account and begin paying on time, the sooner you will be ready. Lenders also want to see that your credit history is stable and established — a two-year-old account with two years of perfect payments looks better than a six-month-old account with six months of perfect payments.
Checking your credit report and fixing errors
You are may have access to to one free credit report per year from each of the three bureaus. Go to annualcreditreport.com (the official site run by the three bureaus) and request your reports. Do not use other sites that claim to be free — many charge a fee or sign you up for a paid monitoring service.
Read each report carefully. Look for accounts you did not open, late payments you do not remember, or incorrect balances. Errors are common and can lower your score unfairly. If you find an error, contact the bureau in writing (email or online form, not phone) and explain the problem. Include copies of documents that prove the error — a bank statement, a receipt, a letter from the creditor. The bureau must investigate within 30 days.
You can also dispute errors directly with the creditor. Send a letter explaining the error and include supporting documents. The creditor must investigate and report back to the bureau. This sometimes works faster than disputing with the bureau itself.
What to avoid while building credit
Do not explore for multiple credit cards or loans in a short time. Each process triggers a hard inquiry, which lowers your score slightly. Multiple inquiries in a few months signal that you are desperate for credit. Space applications at least six months apart.
Do not max out your cards, even if you plan to pay the balance in full. The credit bureaus see your balance on the day your statement closes, not the day you pay it. If you charge $4,000 on a $5,000 limit and pay it off the next week, the bureau still sees an 80% utilization that month. Charge less or pay before the statement closes.
Do not close old accounts or unused cards. Closing an account lowers your available credit and can raise your utilization rate on remaining cards. It also shortens your average account age. Keep old accounts open even if you do not use them.
Do not ignore bills or let accounts go to collections. A collections account can stay on your report for seven years and will make it very difficult to get a mortgage. If you cannot pay a bill, contact the creditor and ask about a payment plan or hardship program before it goes to collections.
Frequently Asked Questions
How much does my credit score need to be to get a mortgage?
Most conventional mortgages require a score of at least 620, but you will get better interest rates with a score of 740 or higher. FHA loans (backed by the Federal Housing Administration) sometimes accept scores as low as 580. The higher your score, the lower your interest rate and the less you pay over the life of the loan.
Can I build credit without a credit card?
Yes. A credit-builder loan from a credit union or online lender works without a credit card. You borrow a small amount, make monthly payments, and the payments are reported to the credit bureaus. This is slower than a credit card but very effective. You can also ask a family member to add you as an authorized user on their credit card — their payment history may help your score, though not all issuers report authorized users.
Will paying off all my debt hurt my credit score?
Paying off debt is good, but paying off all your credit card balances at once can temporarily lower your score because it changes your utilization rate. However, this dip is small and temporary. The long-term benefit of lower debt far outweighs a short-term score drop. Keep the accounts open after you pay them off.
How often does my credit score update?
Credit bureaus update your report when creditors report new information, usually once a month. Your score can change weekly or even daily depending on when creditors report. You do not need to check constantly — monthly checks are enough to track progress.
Does my income affect my credit score?
No. Your credit score is based only on your credit history and how you use credit. Your income does not appear on your credit report. However, lenders will ask about your income when you explore for a mortgage because they need to know you can afford the payments.