Second Mortgage: How It Works and How to Get One

A second mortgage is a loan secured by your home while your first mortgage is still in place. You keep the first loan and add a second monthly payment. If a sale has to cover the debts, the first lender collects before the second one does. Because of that place in line, second mortgages often carry higher interest rates than first mortgages, according to the Consumer Financial Protection Bureau (CFPB).

What is a second mortgage?

The CFPB defines a second mortgage, also called a junior lien, as “a loan you take out using your house as collateral while you still have another loan secured by your house.” Home equity loans and home equity lines of credit (HELOCs) are common examples, according to the CFPB’s explainer on second mortgages.

The loan draws on your equity, which is what the home is worth minus what you owe on it. Lenders set their own rules on how you can use the money. However, the home is the collateral, so falling behind on either loan can lead to foreclosure.

What “second” means, and the main kinds of second mortgage

“Second” refers to lien priority. A lien is a lender’s legal claim on the property. If a sale of the home has to pay off your mortgages, the first lender collects in full before the second lender gets anything. When the sale does not cover both, the second lender may not get the full amount it is owed, the CFPB says. As a result, these loans often carry higher rates.

Second mortgages also come in two shapes. A closed-end loan pays the full amount upfront, and you cannot draw again. An open-end line, by contrast, lets you borrow, repay and borrow again up to a limit.

Home equity loans and HELOCs

A home equity loan gives you a lump sum, usually at a fixed rate, so the payment stays the same.

A HELOC, on the other hand, lets you borrow during a draw period and then repay, and payments are often significantly higher once repayment starts. Our HELOC vs. home equity loan comparison helps you choose between them.

Private companies also sell home equity investments, which are a different product from a second mortgage.

How the second loan works next to your first mortgage

Two loans and two payments

Your first mortgage keeps its rate and term. The second loan adds its own payment, sometimes to a different lender, so your budget has to carry both.

Combined loan-to-value sets your borrowing limit

The CFPB’s HELOC booklet says the amount you can borrow on a second mortgage or home equity loan is “generally a percentage of the appraised value of your home, minus the amount you owe on your mortgage.” Lenders compare all the loans on the home with its value, and that share is the combined loan-to-value ratio (CLTV). Each lender sets its own maximum.

In this illustration, the 80% limit is an assumption, not a standard.

• Home value: $300,000
• First mortgage balance: $150,000
• Lender’s maximum CLTV (assumed): 80%
• Maximum total debt: $300,000 times 80% = $240,000
• Largest possible second mortgage: $240,000 minus $150,000 = $90,000
• Equity left as a cushion: $300,000 minus $240,000 = $60,000

A lender with a lower limit, or a lower value estimate, would offer less.

What happens when you sell

Repayment of a home equity loan or HELOC “is often required when you sell your home,” the CFPB says. At closing, the sale proceeds usually pay off the first mortgage, then the second, and you keep what is left.

What happens when you refinance the first mortgage

When you refinance the first loan, the second lien has to be paid off or stay behind the new first mortgage. For loans sold to Fannie Mae, an existing second lien that is not paid off “must be clearly subordinate to the new refinance mortgage” (Selling Guide B2-1.3-02). In practice, the second lender has to agree to stay in second place, which lenders call subordination (or resubordination). Fannie Mae also treats the refinance as a cash-out refinance when it pays off a second lien that was not used to buy the home, apart from narrow energy-improvement exceptions.

So ask both lenders about their process and fees early. Our guide to HCLTV and HTLTV shows how lenders count a second loan in a refinance.

Second mortgage requirements

For most closed-end second mortgages, such as a home equity loan, federal rules require the lender to make “a reasonable and good faith determination” that you can repay (12 CFR 1026.43(c)(1)). Some loans, such as those made under a housing finance agency program, are exempt. HELOCs also fall outside that section under 1026.43(a)(1), although lenders still underwrite them.

For covered loans, the lender must consider your income or assets, your employment status if it relies on job income, the new payment and any other loan taken at the same time, property taxes and other required home costs, current debts, your debt-to-income ratio or residual income, and your credit history.

Credit, DTI and equity

No federal rule sets a minimum credit score for a second mortgage, so each lender sets its own. Your debt-to-income ratio (DTI) is your monthly debt payments, including both mortgages, divided by your gross monthly income. Federal rules set no DTI cap here either.

Home value and documents

Lenders estimate your home’s value before they set your limit. Some order a full appraisal, while others may use another method. The CFPB’s HELOC booklet lists an appraisal fee among possible upfront costs, so ask which method the lender uses and who pays.

Lenders must also verify the income and other information they rely on with third-party records (1026.43(c)(3) and (c)(4)). Expect to provide items such as pay stubs, W-2s or tax returns, your latest mortgage statement and proof of homeowners insurance.

How to get a second mortgage, step by step

1. Decide what the money is for and how much you need. If the plan is to pay off other debts, the CFPB cautions that “you really aren’t paying them off.” Our guide to using home equity to pay off debt covers that choice.
2. Estimate your equity and CLTV. Use your mortgage statement and a realistic value based on recent nearby sales.
3. Check your credit reports. Fix any errors before you apply.
4. Compare at least three lenders. Include banks, credit unions and online lenders. Then compare the APR, fees, rate type and payment.
5. Read the disclosures. For a home equity loan, the lender must send a Loan Estimate within three business days of your application. A HELOC comes with Truth in Lending disclosures instead, according to the CFPB.
6. Close, then use your right to cancel if you need it. For a second mortgage on your main home, you can cancel until midnight of the third business day after closing, or after you receive the required notice and disclosures if that is later (12 CFR 1026.23(a)(3)). Saturdays count as business days for this purpose; Sundays and federal holidays do not. The right does not apply to a loan used to buy the home, so a piggyback second at purchase has no cancellation window.

Soft second mortgages and piggyback loans

Both are usually second liens placed on a home when you buy it.

Soft second mortgages

A soft second is down payment or closing cost help recorded as a second lien, with payments deferred or the balance forgiven over time. HUD’s FHA handbook treats this kind of loan as secondary financing, which “is not considered a Gift or a grant even if it does not require regular payments or has other features forgiving the debt” (HUD Handbook 4000.1, II.A.4.d.iii(J)).

Soft seconds often come from a state housing finance agency, a local government or a nonprofit. Terms vary by program. Many come due when you sell or move out, and some also when you refinance or pay off the first mortgage, while others are forgiven after you live in the home for a set period. Our guide to down payment assistance programs explains how to find one.

Piggyback loans

A piggyback loan pairs a first mortgage with a second loan on the same purchase. In an 80/10/10 piggyback mortgage, the first loan is 80% of the price, the second is 10% and the buyer puts 10% down. With a conventional loan, private mortgage insurance may be required when you put less than 20% down, according to the CFPB. A piggyback loan aims to avoid it by keeping the first loan at 80% of the price. The tradeoff is a second payment; see the pros and cons of piggyback loans.

Second mortgage vs. cash-out refinance

A cash-out refinance replaces your first mortgage with a larger one and pays you the difference. That resets the rate and term on your whole balance. A second mortgage, by contrast, leaves the first loan alone and puts a new rate only on the new money.

Here is a simple test. Compare the rate on your current first mortgage with what a new first mortgage would cost you. If your current rate is lower, a cash-out refinance gives that rate up on the entire balance, while a second mortgage keeps it. If your current rate is higher, a cash-out refinance may lower the cost of the whole debt, so price both options.

For context, Freddie Mac’s weekly survey put the average 30-year fixed rate at 7.11% on November 12, 2026, up from 6.24% a year earlier.

The CFPB’s HELOC booklet also lists “closing costs are generally higher” as a typical drawback of a cash-out refinance. On the plus side, you keep one mortgage payment.

Pros, cons and costs of a second mortgage

Advantages

• You keep your first mortgage. Its rate and term do not change.
• Your limit is tied to your equity. The CFPB’s booklet says it is generally a percentage of your home’s appraised value minus what you owe on your mortgage.
• Rates can be lower than on unsecured debt. The CFPB’s booklet says credit cards carry a higher rate than a loan secured by your home. However, the CFPB also notes the lower rate is “only because you are using your home as collateral.”

Disadvantages

• Two payments. You add to your overall debt, which leaves less room if your income drops.
• Foreclosure risk. Your home secures the loan.
• Upfront costs. The CFPB says home equity loans may have upfront fees and costs. Its HELOC booklet lists appraisal, application and closing fees as examples and says some lenders waive some or all of them for a HELOC.

Taxes

Interest on a second mortgage is deductible only to the extent you used the money to buy, build or substantially improve the home that secures it. That rule applies “no matter when the indebtedness was incurred,” according to IRS Publication 936 (2025 edition). You also have to itemize, so ask a tax professional before you count on a deduction.

Second mortgage FAQ

Are second mortgage rates higher than first mortgage rates?

Often, yes. The CFPB says second mortgages often carry higher rates because the second lender collects after the first one in a sale. How much higher depends on the lender and your file.

What is a soft second mortgage?

A soft second is down payment or closing cost help recorded as a second lien. Payments are usually deferred, and some programs forgive the balance over time.

Is a second mortgage the same as a home equity loan?

A home equity loan is one kind of second mortgage, and a HELOC is another. Both sit behind your first mortgage.

What happens to a second mortgage if I sell or refinance?

When you sell, the proceeds usually pay off the first mortgage and then the second. When you refinance the first loan, the second must be paid off or its lender must agree to stay in second place.

Can I get a 2nd mortgage with bad credit?

It is harder, and no approval is guaranteed. Each lender sets its own minimum score, and a lower score usually means a higher rate.

What do lenders look at for a second mortgage?

Lenders look at your equity, credit history, income, employment, current debts and DTI. For most home equity loans, they must also make a good-faith determination that you can repay.

Next step

Check your balance and your home’s value to see what a lender’s CLTV limit allows. Then compare quotes from at least three lenders on APR, fees and both payments.