A housing loan, more commonly called a mortgage, is a loan you take out to buy a home, using the property itself as collateral. You borrow a large sum from a lender, then repay it in monthly installments over a set period, typically 15 or 30 years. If you stop making payments, the lender has the legal right to take the home through foreclosure. Most homebuyers use a housing loan because few people can pay for a house entirely in cash.
How Monthly Payments Work
Your monthly mortgage payment covers four things: principal (the amount you originally borrowed), interest (the lender’s charge for lending you money), property taxes, and homeowners insurance. Lenders often collect the tax and insurance portions each month and hold them in an escrow account, then pay those bills on your behalf when they come due.
The way principal and interest are divided within each payment shifts over time through a process called amortization. In the early years, most of your payment goes toward interest, and only a small slice reduces the loan balance. As the balance shrinks, the interest charge drops, so more of each payment chips away at the principal. To illustrate: on a $135,000 loan at 4.5% over 30 years, your first monthly payment of $684 would include about $506 in interest and only $178 toward principal. By month 180 (the halfway mark), the split is roughly $335 interest and $349 principal. In the final month, nearly the entire payment ($681 of $684) goes to principal.
This front-loaded interest structure is why making extra payments early in a loan’s life can save you tens of thousands of dollars over the long run. Each extra dollar applied to principal reduces the balance that future interest is calculated on.
Main Types of Housing Loans
Conventional Loans
Conventional loans are not backed by a government agency. They typically require a minimum down payment of 3% to 5% and a credit score of at least 620. If you put down less than 20%, you’ll usually pay private mortgage insurance (PMI), a monthly fee that protects the lender if you default. Once your equity reaches 20%, you can request to have PMI removed.
FHA Loans
FHA loans are insured by the Federal Housing Administration and designed for borrowers with lower credit scores or smaller savings. You can qualify with a credit score as low as 580 and a down payment of just 3.5%. If your score falls between 500 and 579, you’ll need a 10% down payment. The FHA allows a debt-to-income ratio (the share of your gross monthly income that goes to debt payments) of up to 43%, and sometimes as high as 50%. Anyone who meets the credit and income requirements can apply.
VA Loans
VA loans, backed by the Department of Veterans Affairs, are available to active-duty service members, veterans, and eligible military spouses. The biggest advantage is that no down payment is required. The VA itself doesn’t set a minimum credit score, though most lenders prefer at least 620. You’ll need a certificate of eligibility to prove your service history. VA loans also don’t require private mortgage insurance, which lowers your monthly costs compared to conventional or FHA loans with small down payments.
What You Need to Qualify
Regardless of loan type, lenders evaluate four main factors when deciding whether to approve you and at what interest rate.
- Credit score: Higher scores unlock lower interest rates. Conventional loans generally require 620 or above. FHA loans accept scores as low as 500 with a larger down payment. Even a small difference in your score can change your rate, which affects how much you pay over the life of the loan.
- Debt-to-income ratio (DTI): Lenders add up all your monthly debt obligations (car loans, student loans, credit card minimums, and the projected mortgage payment) and divide by your gross monthly income. Most lenders want this number at or below 43%, though some loan programs allow higher ratios.
- Down payment: The more you put down, the less you need to borrow, and the better terms you’re likely to get. Down payment requirements range from 0% for VA loans to 3.5% for FHA loans to 3% to 20% for conventional loans.
- Employment and income verification: Lenders will ask for recent pay stubs, W-2 forms, and tax returns (typically two years’ worth) to confirm you earn enough to handle the payments.
Closing Costs and Fees
Beyond the down payment, you’ll pay closing costs when you finalize the loan. These typically run between 2% and 5% of the home’s purchase price. On a $300,000 home, that means $6,000 to $15,000 in fees due at the closing table.
The biggest single fee is usually the loan origination fee, which the lender charges for processing your mortgage. It typically runs between 0.5% and 1% of the loan amount, so on a $270,000 loan, expect $1,350 to $2,700 for origination alone. This fee may or may not include underwriting costs; if not, you’ll see a separate underwriting charge.
Other closing costs include an appraisal fee (paid to a professional who assesses the home’s market value), a title search and title insurance, recording fees charged by local government, and prepaid items like your first year of homeowners insurance or a few months of property taxes deposited into escrow. Your lender is required to give you a detailed loan estimate within three business days of your application so you can see exactly what you’ll owe.
The Application Process Step by Step
Getting a housing loan follows six general stages: pre-approval, house shopping, formal application, loan processing, underwriting, and closing.
Pre-approval comes first. You provide a lender with your financial documents, and they tell you roughly how much you can borrow and at what rate. A pre-approval letter strengthens your offer when you find a home, because sellers know you’ve already been vetted. Pre-approval doesn’t guarantee final approval, but it gives you a realistic budget.
Once you’ve found a home and had an offer accepted, you submit a formal mortgage application. Within three business days, the lender must provide a loan estimate detailing your projected interest rate, monthly payment, and closing costs. If your application is rejected, the lender is required to send you a written explanation within 30 days.
During processing and underwriting, the lender verifies your income, reviews the home appraisal, checks your credit again, and confirms all the details. An underwriter (the person who makes the final approval decision) may ask for additional documentation, like explanations for large deposits or proof of gift funds for your down payment. The entire process from application to closing commonly takes 30 to 45 days, though it can stretch longer if complications arise.
At closing, you sign the final paperwork, pay your closing costs and any remaining down payment, and receive the keys. The loan is now active, and your first monthly payment is usually due within 30 to 60 days.
Fixed-Rate vs. Adjustable-Rate Loans
Housing loans come with either a fixed or adjustable interest rate. A fixed-rate mortgage locks in the same rate for the entire loan term, so your principal and interest payment never changes. This is the most popular choice because it makes long-term budgeting predictable.
An adjustable-rate mortgage (ARM) starts with a lower introductory rate for a set period, often 5 or 7 years, then adjusts periodically based on market conditions. Your payment could go up or down after the introductory period ends. ARMs can make sense if you plan to sell or refinance before the rate adjusts, but they carry risk if you stay in the home longer than expected and rates rise.