Second mortgage 101: Everything you need to know

If you’re a homeowner, making consistent monthly payments helps you build equity over time. Equity is the amount of the home you currently own and can be calculated by taking the current value of the home and subtracting what you still owe on your mortgage. Once you’ve accumulated enough equity, you can use it to pursue different financial goals.

One way you can use your home equity as collateral to borrow money is by getting a second mortgage. Securing a loan with your home reduces the risk for the lender, which can get you more favorable loan terms and can save you money. However, because you’re using your home as collateral, you could risk foreclosure if you can’t repay your loan. Here’s a closer look at how second mortgages work and the tradeoffs involved to help you decide if it’s the right loan option for you.

What is a second mortgage?

A second mortgage is a loan that uses your home as collateral while you still have a first mortgage. With a second mortgage, you borrow against the equity you’ve built in your home. Using your home as collateral can help you get a lower interest rate than you would with other types of loans.

It’s called a second mortgage because you’ll need to make two separate mortgage payments each month and the lender holds a second lien on your property. A lien is a legal right to property until a debt is repaid. That lien gives the lender the legal right to claim the property if the loan isn’t repaid. So, if you can’t keep up with your second mortgage payments, you could risk losing your home from foreclosure. A second mortgage is also sometimes called a junior lien or second lien.

Second mortgage vs. refinance

A second mortgage and a refinance are two different ways to you can borrow against your equity. The key difference is that a second mortgage is an additional loan you pay alongside your primary mortgage. A refinance is a new loan that replaces your existing mortgage, consolidating the debt into one monthly payment.

A cash-out refinance¹ is a type of refinance that lets you turn some of your home equity into cash. You take out a new loan that's larger than your current balance and receive the difference as cash at closing. If current interest rates are lower than when you initially took out your mortgage, a cash-out refinance can be away to lower the rate on your primary mortgage. However, if you already have a very low rate on your first mortgage, a second mortgage allows you to keep it intact.

How does a second mortgage work?

A second mortgage works a lot like your first mortgage, but with a few important differences. You’re borrowing against the equity you’ve built in your home, and the lender takes a second lien on your property.

Second mortgage application process

The application process for a second mortgage is very similar to securing a first mortgage. It begins with an application and a review of your financial profile. Next, the lender will usually require an appraisal to determine the current market value of your home. Them, the lender can calculate your available equity by taking the home's current value and subtracting your current mortgage balance.

This allows the lender to calculate your borrowing limit, known as your loan-to-value (LTV) ratio. Lenders generally allow you to borrow up to a percentage of your home’s value, minus what you still owe on your first mortgage. Every lender sets its own guidelines, but you can typically borrow up to 80% to 90% of your home’s value.

For example, let’s say your home is worth $300,000 and you owe $200,000 on your first mortgage. A lender capping LTV at 85% would calculate 85% of $300,000, which is $255,000. Subtracting the $200,000 you still owe leaves $55,000 available in equity. That $55,000 represents the potential amount you may be allowed to borrow. The exact number varies depending on the lender’s specific criteria.

After calculating your limit, the loan goes through underwriting. The lender will review your finances to confirm that you are in a position to take on a second mortgage. Once approved, you review the final terms and close on the loan.

Second mortgage lien order

It’s important to understand how lien order works. When you take out a second mortgage, the new lender places a second lien on your home. This simply means your first mortgage lender is paid back first if the home is ever sold because of unpaid debt.

The second mortgage lender is repaid after the first. Because the second lender takes on more risk, second mortgage interest rates are typically higher than first-mortgage rates. However, they’re often still lower than rates for credit cards or unsecured personal loans.

Types of second mortgages

There are two main types of second mortgages – a home equity loans and home equity lines of credit (HELOCs). Both let you access your home’s equity but work differently. A home equity loan gives you a one-time lump sum with a fixed interest rate, while a HELOC gives you access to a revolving credit line with a variable rate (

Rocket Mortgage doesn’t offer HELOCs at this time, but we do offer a Home Equity Loan.

Let’s take a closer look at how each option works and when one may make more sense than the other.

Home equity loan

A home equity loan is a second mortgage that provides a one-time, lump-sum payout. Funds are disbursed at closing and repaid over a set term. It comes with a fixed interest rate, which means your rate is set at closing and doesn’t change. This helps keep your home equity loan monthly payments predictable.

The borrower receives the entire approved loan amount up front and repayment begins immediately. Loan terms vary by lender but can last anywhere from five to 30 years.

This structure is commonly used for one-time, clearly defined expenses, such as:

• Home improvements
• Medical bills
• Debt consolidation
• Large purchase
• Life events, like a wedding

Now, let’s go over the main advantages and drawbacks of home equity loans.

Pros

Some of the primary perks of home equity loans include:

• Fixed interest rate means predictable monthly payments
• Lower interest rates compared to credit cards or unsecured loans
• Provides all funds at once
• Loan terms can be longer to keep monthly payments manageable
• If you use the money to renovate your home and increase the value, the interest on your home equity loan can be tax deductible.

Cons

It’s important to also be aware of the risks and downsides of home equity loans, such as:

• You have to begin repaying the full balance immediately, regardless of how funds are used.
• Less flexible than a revolving line of credit.
• You risk foreclosure if you can’t repay the loan.
• You’ll pay closing costs.

When evaluating your choices, comparing a second mortgage vs. home equity loan will help you determine which is a better fit for you.

Home equity line of credit (HELOC)

A HELOC is a type of second mortgage that provides a revolving line of credit, similar to a credit card. However, because you’re using your home as collateral, HELOCs come with lower interest rates than credit cards or unsecured loans. The rate on a HELOC is variable which means the amount you owe each month can change.

As a reminder, Rocket Mortgage doesn’t offer HELOCs at this time.

The lender approves a maximum credit limit based on home equity and credit history. With a HELOC, you can access the funds as needed – typically through transfers, checks, or a linked card, depending on the lender.

The draw period typically lasts 10 years, during which time the borrower can take funds, repay them, and borrow again. After the draw period ends, the repayment period begins. You’ll typically have up to 20 years to pay down the balance.

HELOCs are commonly used for expenses that occur over time or in phases, such as:

• Ongoing or multi-stage home renovations
• Tuition paid in installments
• Medical treatments with unpredictable costs.

Now, let’s go over the tradeoffs that come with HELOCs.

Pros

• Lower interest rate than unsecure loans
• You only pay interest only on the amount you draw, not the full line
• Useful for long-term or recurring expenses
• Long repayment terms
• Revolving structure allows funds to be reused during the draw period

Cons

• Variable interest rate means monthly payments may increase
• Less predictability compared to a fixed-rate loan
• Using home equity as collateral means risk of foreclosure if you can’t repay the loan
• Some lenders charge annual fees, inactivity fees, or other line-maintenance costs.

You can learn more by exploring the differences between a HELOC vs. second mortgage.

What fees are involved in a second mortgage?

Fees vary widely by lender and product type. It’s important to understand how all the fees you’re charged to get a second mortgage affect the total overall cost of the loan.

The costs involved in the application and closing process may include application fees, origination fees, appraisal costs, and possible annual or inactivity fees for home equity lines of credit. Since costs vary by lender, carefully reading your loan estimate will help you understand how these fees impact your total borrowing cost.

What do you need to get a second mortgage?

The requirements to get a second mortgage will look similar to qualifying for any other type of loan. The biggest difference is the lender will need to know the current value of your home to calculate your equity. Because equity depends partly on home value, changes in the housing market can affect how much you can borrow. Your eligibility and the amount you can borrow will also depend on your credit score and the amount of debt you have.

Home equity

Lenders generally require you to have a minimum amount of equity before you can borrow against it. You’ll also need to retain a minimum amount of equity after you’ve borrowed against it. Most lenders prefer that you keep at least 10% to 20% of your home value as equity. Keep in mind that your equity is based on both your mortgage balance and market values. Changes in the market can impact how much equity you have.

Credit score and debt-to-income ratio (DTI)

Lenders often set minimum credit score and debt-to-income ratio requirements to ensure you can comfortably handle the new payments alongside your existing debt. You’ll typically need a credit score of at least 620 to get a second mortgage. Having a higher credit score can get you a lower interest rate on a second mortgage.

Can you get a second mortgage with bad credit?

While it is not impossible to qualify with a lower credit score, it may be more difficult. If you don’t meet the minimum credit requirement, lenders may look for compensating factors - higher income or more equity in the home – to offset having a low credit score.

If your credit isn’t so hot but you’re still able to get approved for a second mortgage, you can expect to be charged a higher interest rate. In general, borrowers with lower credit scores are seen as a higher risk to lenders.

Second mortgages often come with higher interest rates than primary mortgages because they’re a second lien. Borrowers are managing two monthly payments - first and second mortgages - which adds another layer of risk for the second lender. If the loan defaults and the home is sold to pay off the debt, second mortgage lenders get repaid only after the first mortgage lender.

Second mortgage rates

Interest rates for second mortgages can depend on your credit profile, your equity, loan amount, and lender pricing. Rates for second mortgages are typically higher than first mortgage rates for several reasons:

• Lien position drives risk: Second mortgage lenders hold a second lien, meaning they’re repaid only after the first mortgage lender if the home is ever sold to cover unpaid debt. Because they are second in line, lenders face greater risk of not being fully repaid. Higher risk generally leads to higher interest rates compared to first mortgages.
• Two-loan structure increases lender exposure: Borrowers are managing two monthly payments on their first and second mortgages, which adds another layer of risk for the second lender.

Pros of a second mortgage loan

Some of the primary benefits of a second mortgage include:

• You can potentially borrow a large amount of cash.
• They typically come with a lower interest rate than credit cards or unsecured loans.
• You can use the funds for anything.
• If you use the money to increase the value of your home, the interest may be tax deductible.

Cons of a second mortgage loan

It’s important to be aware of the potential risks and downsides of a second mortgage, such as:

• They typically have a higher interest rate than a primary mortgage.
• You’ll have two mortgage payments.
• You risk foreclosure if you can’t repay the loan.
• You’ll need to pay closing costs.
• Using equity reduces your ownership stake.

When should you get a second mortgage?

Everyone’s situation is different, and there are a wide variety of use cases for a second mortgage. Some common reasons it could be a good choice include:

• Situations when you need a lump-sum payment
• You have a specific, one-time expense that requires a defined amount of money up front, such as a major home improvement project or debt consolidation.
• You prefer fixed monthly payments that stay the same over the life of the loan.
• You want to tap into home equity without replacing your primary mortgage.
• When refinancing would mean taking on a higher rate for your entire mortgage balance, which could increase your long-term costs.

The bottom line: A second mortgage could help you access cash

A second mortgage allows homeowners to borrow money against their home equity while keeping their current mortgage terms in place. In many cases, it can be a useful financing tool. However, it also means you’ll need to be able to afford two separate monthly mortgage payments. You’ll also be sacrificing some of your home equity.

If you have weighed your choices and are ready to explore your options, you can start the process with Rocket Mortgage today.

Refinancing may increase finance charges over the life of the loan.

Rocket Mortgage is a trademark of Rocket Mortgage, LLC or its affiliates.