What Is a First Mortgage?
Let me explain what a first mortgage really is. It's the primary lien on a property, the original loan you take out to buy it, and it holds priority over any other liens or claims if there's a default. Don't confuse it with the mortgage on your first home—it's simply the initial mortgage on that specific property. We also call it a first lien. If you refinance the home, that new loan steps into the first mortgage position. This contrasts with a second mortgage, which is an extra loan against the same property.
Key Takeaways
Here's what you need to know at a glance. A first mortgage secures the property as the primary lien. A second mortgage lets you borrow against your home equity for other needs. If your first mortgage's loan-to-value ratio goes over 80%, lenders usually require private mortgage insurance. And remember, the interest you pay on a first mortgage can be tax deductible if you itemize on your returns.
Understanding First Mortgages
When you're looking to buy a property, you might finance it with a mortgage from a lender. You apply, get approved, and sign the paperwork. With a first mortgage, the lender expects monthly payments that cover part of the principal and interest. They place a lien on the property since it secures the loan. This is the original mortgage for purchasing the home.
Keep in mind, the first mortgage is the initial loan on that property, not necessarily the first one in your life. You could own multiple properties, and each original mortgage on them counts as a first mortgage. For instance, if you have three homes, each with its own original loan, those are all first mortgages.
One key benefit is that the interest paid on a first mortgage is tax deductible, reducing your taxable income by that amount for the year. But this only applies if you itemize expenses on your tax return.
First Mortgage Requirements
Requirements for a first mortgage differ depending on if it's a conventional loan or government-backed like FHA, USDA, or VA. These affect your minimum credit score, down payment, closing costs (including seller contributions), repayment terms, and interest rates.
The property type matters too. Take FHA loans: they let you buy a one- to four-unit home with just 3.5% down and a credit score as low as 580, but the property must meet specific standards.
If your credit is poor, it's not an automatic no, but it will influence your loan terms and rates.
First Mortgage and Loan-to-Value (LTV)
The loan-to-value ratio compares the mortgage amount to the home's appraised value. If it's over 80% on your first mortgage, you'll likely need private mortgage insurance. Sometimes, it makes sense to cap the first mortgage at 80% LTV and use a second loan for the rest.
Whether to pay PMI or take a second loan depends on how quickly you think your home's value will rise. You can drop PMI once the LTV hits 78%, but a second lien—with its higher interest rate—needs to be paid off, often by refinancing the first mortgage to cover both balances.
First Mortgage vs. Second Mortgage
The name 'first mortgage' implies there could be others. You can take out a second mortgage while the first is still active. The first is the main debt, with the property as collateral. A second is a junior lien on top of the first.
Second mortgages come after first ones in priority. If you sell the home, proceeds pay the first mortgage first, then the second. Examples include home equity loans and HELOCs, which let you borrow against your equity.
First mortgages can have fixed or variable rates, while home equity loans are often fixed and HELOCs variable. Both use the home as collateral, but the first is the primary lien, paid first. Loan limits for first mortgages depend on type and eligibility; for seconds, it's 75% to 100% of equity. PMI applies to firsts based on LTV, not usually to seconds, though it might impact the first.
Your ability to get a second depends on credit, income, and equity built up.
Example of a First Mortgage
Consider this scenario: You get a $250,000 first mortgage on a home, then later a $30,000 second mortgage. After repaying $50,000 of the first, you default, and the property sells for $210,000 in foreclosure. The first lender gets the $200,000 owed, and the second gets the remaining $10,000. That's why seconds have higher rates—they're riskier.
If payments are tough, look into loan modifications, short sales, or deeds in lieu for managing both.
Common Questions
Can you have two mortgages at once? Yes, a first for buying and a second for improvements or other uses.
Is a second superior to a first? No, firsts take priority in repayment.
What's the downside of a second? It adds to your monthly payments and raises default risk if you can't handle both.
Is a second a good idea? It could be if you've compared options and can afford it, but skip it if your income is shaky or you lack emergency savings.
The Bottom Line
First mortgages enable home purchases and outrank any second mortgages on the property. When applying, know the requirements and what lenders want. Shop around for rates to get the best deal.
