Last updated: September 29, 2026
Buying a home is one of the biggest financial decisions most people ever make, and for most buyers it depends on one thing: getting approved for a mortgage. The approval process can feel intimidating, but lenders follow a fairly predictable set of rules. Once you understand what they look for, you can prepare in advance, improve your chances, and often qualify for a better interest rate.
This guide explains how lenders evaluate borrowers, the main types of mortgages, the step-by-step approval process, the documents you’ll need, and the mistakes that most often derail applications. It focuses on the U.S. mortgage process, though many principles apply in other countries too.
What Is a Mortgage?
A mortgage is a loan used to buy property, with the property itself serving as collateral. You repay the loan — plus interest — over a set term, commonly 15 or 30 years. If you stop making payments, the lender can take the property through foreclosure.
Your monthly mortgage payment usually includes four parts, often called PITI:
- Principal: Repaying the amount you borrowed.
- Interest: The lender’s charge for lending you money.
- Taxes: Property taxes, often collected monthly into an escrow account.
- Insurance: Homeowners insurance and, if required, mortgage insurance.
The 5 Things Lenders Look At
1. Credit score
Your credit score helps lenders judge how reliably you repay debt. It affects both whether you’re approved and the interest rate you’re offered. Minimum scores vary by loan type and lender — FHA loans can allow lower scores, while conventional loans typically require higher scores, and the best rates usually go to borrowers with scores in the 740+ range.
Learn what drives your score in how credit scores work.
2. Debt-to-income ratio (DTI)
DTI compares your monthly debt payments to your gross (pre-tax) monthly income:
DTI = Total monthly debt payments ÷ Gross monthly income
Example: If you earn $6,000 per month before tax and your debts — including the new mortgage payment, a car loan, and credit card minimums — total $2,400, your DTI is 40%.
Many lenders prefer a DTI of around 43% or lower, though some loan programs allow higher ratios with strong credit or savings. Paying down debts before applying can make a big difference.
3. Down payment
The down payment is the part of the purchase price you pay upfront. Requirements depend on the loan type — some programs allow as little as 3% to 3.5% down, and certain government-backed loans allow 0% for eligible borrowers.
With a conventional loan, putting down less than 20% usually means paying private mortgage insurance (PMI), which protects the lender. PMI can generally be removed once you reach enough equity in your home.
4. Income and employment
Lenders want to see stable, reliable income — often a two-year history in the same job or field. Self-employed borrowers usually need to provide two years of tax returns and may face more documentation requirements.
5. Assets and reserves
You’ll need to show enough money for the down payment and closing costs, and some lenders want to see extra reserves — savings that could cover several months of mortgage payments. Large, unexplained deposits in your bank account may need documentation.
Types of Mortgages
| Loan type | Typical minimum down payment | Best for | Key points |
|---|---|---|---|
| Conventional | As low as 3% (for some programs) | Borrowers with good credit | PMI if under 20% down; PMI can be removed later |
| FHA | 3.5% with qualifying credit score | Lower credit scores or smaller down payments | Government-insured; requires mortgage insurance premiums |
| VA | Often 0% | Eligible veterans and service members | No monthly mortgage insurance; funding fee may apply |
| USDA | Often 0% | Eligible rural and suburban buyers with income limits | Location and income requirements apply |
| Jumbo | Often higher | Loans above conforming limits | Stricter credit, income, and reserve requirements |
You’ll also choose between a fixed-rate mortgage, where your rate never changes, and an adjustable-rate mortgage (ARM), which starts with a fixed rate and then adjusts periodically. Fixed rates offer predictability; ARMs may offer a lower starting rate but carry the risk of higher future payments.
Step-by-Step: How to Get Approved
Step 1: Check your credit (3–12 months before applying)
In the U.S., you can get free credit reports from Equifax, Experian, and TransUnion at AnnualCreditReport.com. Look for errors, dispute inaccuracies, pay down card balances, and make every payment on time.
Step 2: Work out your budget
Just because a lender approves you for a certain amount doesn’t mean you should borrow it. Include property taxes, insurance, maintenance, utilities, and other homeownership costs in your budget. Make sure you’ll still have an emergency fund after buying.
Step 3: Save for the down payment and closing costs
Closing costs often run a few percent of the loan amount and cover lender fees, appraisal, title insurance, and prepaid taxes and insurance. Ask about first-time buyer assistance programs in your area, which may help with down payments.
Step 4: Get prequalified or preapproved
- Prequalification: A quick estimate based on information you provide. Useful early on, but less reliable.
- Preapproval: The lender reviews your credit and documents and gives a conditional commitment. Sellers take preapproved buyers more seriously.
Step 5: Compare several lenders
Get Loan Estimates from at least three lenders — banks, credit unions, and mortgage brokers. Compare the interest rate, APR, lender fees, and points. Credit scoring models generally treat multiple mortgage inquiries within a short shopping window as one inquiry.
Step 6: Find a home and apply formally
Once your offer is accepted, you’ll complete the full application and may choose to lock your interest rate for a set period.
Step 7: Underwriting, appraisal, and inspection
The underwriter verifies your information and may ask for additional documents. The lender orders an appraisal to confirm the home’s value. A separate home inspection — which you arrange — checks the property’s condition.
Step 8: Closing
You’ll receive a Closing Disclosure at least three business days before closing. Compare it with your Loan Estimate, then sign the documents, pay your closing costs, and receive the keys.
Documents Checklist
- Government-issued photo ID
- Recent pay stubs
- W-2s or 1099s (typically two years)
- Federal tax returns (typically two years, especially if self-employed)
- Bank and investment statements (usually two months)
- Details of debts, such as car loans and student loans
- Explanation letters for large deposits or credit issues, if requested
- Gift letter if family is helping with the down payment
How to Improve Your Chances of Approval
- Raise your credit score by paying on time and lowering card balances.
- Reduce your DTI by paying off small debts before applying.
- Save a larger down payment if possible.
- Keep your job stable during the process.
- Document your income clearly, especially if you’re self-employed.
- Consider a co-borrower with strong credit and income, if appropriate.
- Look at loan programs designed for your situation, such as FHA or VA loans.
Common Mistakes That Derail Approval
- Opening new credit or financing a car before closing.
- Changing jobs in the middle of the process without talking to your lender.
- Making large, undocumented deposits or transfers.
- Missing payments on existing debts.
- Forgetting closing costs and ongoing homeownership expenses.
- Not comparing lenders — even a small rate difference adds up over decades.
After You’re Approved: Protect Your Investment
- Get the right homeowners insurance — lenders require it.
- If others depend on your income, consider term life insurance to cover the mortgage.
- Watch rates over time — you may benefit from refinancing later. See mortgage refinance rates.
- As you build equity, understand your options — see HELOC vs home equity loan.
Frequently Asked Questions
How long does mortgage approval take?
Preapproval can take a few days. From accepted offer to closing, the process often takes about 30 to 45 days, depending on the lender, appraisal, and how quickly you provide documents.
Can I get a mortgage with bad credit?
It may be possible through programs like FHA loans, but you’ll likely pay a higher rate. Improving your credit before applying can save a lot of money.
Does getting preapproved hurt my credit?
Preapproval usually involves a hard credit inquiry, which may lower your score slightly for a short time. Multiple mortgage inquiries within a short shopping period are generally treated as one.
Can I get a mortgage if I’m self-employed?
Yes, but expect to provide more documentation, typically two years of tax returns and business records. Lenders usually base income on your net earnings after deductions.
Should I buy now or keep renting?
It depends on your finances, how long you plan to stay, and local prices. Buying usually makes more sense if you plan to stay several years and can comfortably afford the full costs of ownership. Until then, make sure you’re protected with renters insurance.
Final Thoughts
Getting approved for a mortgage comes down to showing lenders that you’re a reliable borrower: a solid credit score, manageable debt, stable income, and enough savings for the down payment, closing costs, and reserves. Start preparing months in advance, compare several lenders, avoid big financial changes during the process, and borrow an amount that fits comfortably in your budget — not just the maximum you’re offered.
This article is for general educational purposes and is not financial advice. Loan programs, requirements, and rates vary by lender and location, so speak with a licensed mortgage professional about your situation.