Heloc vs. Second Mortgage

A HELOC is a type of second mortgage, but it varies significantly from a typical fixed-rate home equity loan.

There are two main types of second mortgages: A home equity line of credit (HELOC) is a revolving credit line secured by your home equity, and a home equity loan is typically a fixed-rate lump-sum loan that is also secured by your home.

Both are considered second mortgages because they sit behind your primary mortgage in lien priority, although people often refer to fixed-rate loans as “second mortgages.”

Understanding how these products differ can help you choose the option that best fits your financial goals.

HELOC vs Fixed-Rate Second Mortgage at a Glance

What Is a HELOC?

A home equity line of credit is a revolving credit line secured by your home’s equity. It works similarly to a credit card, allowing you to borrow, repay, and borrow again up to a set credit limit.

HELOCs are often used when expenses occur over time rather than all at once.

Core HELOC Features

Variable interest rate: Most HELOCs have variable rates tied to a benchmark such as the prime rate.

Draw period: Many HELOCs allow borrowing for about 10 years. During this period, borrowers often have the option to make interest-only payments.

Repayment period: After the draw period ends, the line converts into a repayment period where principal and interest payments are required. This phase often lasts 10 to 20 years.

Because you only pay interest on the amount you borrow, HELOCs can be useful for staged expenses such as multi-phase renovations.

What Is a Fixed-Rate Second Mortgage?

A second mortgage is any loan secured by your home that sits behind your primary mortgage. Both HELOCs and home equity loans fall into this category because they are second-lien loans.

When people refer to a “second mortgage,” they are often referring specifically to a home equity loan, which provides a lump sum with a fixed repayment schedule.

Because the property secures the loan, missed payments can put your home at risk. 

Key Differences Between HELOC and Home Equity Loan

The biggest differences involve how funds are accessed and how payments are structured.

HELOC vs Home Equity Loan Interest Rates and Costs

Both HELOCs and home equity loans are secured by your home, so they often carry lower interest rates than unsecured debt such as credit cards or personal loans.

However, rates are typically higher than first-mortgage rates because the loan is in a second-lien position.

HELOC costs and rate characteristics:

• usually variable interest rates
  
  
• may include annual or maintenance fees
  
  
• interest applies only to borrowed funds
  
  

Home equity loan costs and rate characteristics:

• typically fixed interest rate
  
  
• interest accrues on the full balance immediately
  
  
• predictable monthly payments
  
  

Some HELOC lenders also allow borrowers to convert portions of the balance to fixed rates, which can reduce rate volatility.

Repayment Terms and Payment Structure

Understanding how payments work is essential when choosing between these products.

During the draw period of a HELOC, funds that are repaid become available to borrow again. This feature can be helpful when expenses occur over time.

When to Choose a HELOC vs a Home Equity Loan

Choosing between these products depends largely on how and when you plan to use the funds.

A HELOC may be better if:

• your expenses will occur over time
  
  
• you want flexibility to borrow only what you need
  
  
• you are comfortable with variable rates
  
  

A home equity loan may be better if:

• your project has a fixed cost
  
  
• you want predictable payments
  
  
• you prefer a fixed interest rate
  
  

How to Qualify for a HELOC or Second Mortgage

Qualification requirements vary by lender, but most lenders evaluate several common factors when deciding whether you qualify.

Credit score: Many lenders look for credit scores of around 620 or higher, though stronger scores may improve pricing.

Loan-to-value ratio: Combined loan-to-value ratios often fall around 80% to 85%, depending on the lender and property type.

Income verification: Borrowers typically provide pay stubs, W-2s or tax returns, and bank statements.

Home valuation: A property valuation or appraisal may be required to confirm available equity. Owner-occupied properties often qualify for higher LTV limits and better pricing than second homes or investment properties.

The Bottom Line

Both a HELOC and a home equity loan are second mortgages, but there are key differences between the two.

A HELOC is a revolving line of credit with a variable interest rate, and is generally best used for ongoing expenses, while a home equity loan is generally a fixed-rate, lump sum loan that comes with payment predictability.

Frequently Asked Questions

What is the difference between a HELOC and a second mortgage?

A HELOC is a type of second mortgage, but differs from a home equity loan. A HELOC is a revolving credit line secured by your home equity, while a home equity loan is a lump-sum second mortgage with fixed monthly payments.

Which option is cheaper, HELOC or home equity loan?

A HELOC may start with lower interest costs if you borrow gradually, but a fixed-rate home equity loan may be cheaper overall if interest rates rise.

When should I choose a HELOC instead of a home equity loan?

A HELOC can be helpful when expenses occur over time or when you need flexible borrowing rather than a single lump sum.

What risks should I consider before borrowing against home equity?

Both HELOCs and home equity loans are secured by your home, so missed payments can eventually lead to foreclosure.

Are HELOC and home equity loan interest payments tax deductible?

Interest may be deductible when funds are used to buy, build, or substantially improve the home securing the loan. Tax rules can change, so borrowers should confirm with a qualified tax professional.