Home Equity Line of Credit (HELOC)

How Does a Home Equity Line of Credit (HELOC) Work?

A Home Equity Line of Credit, or HELOC, is a second mortgage that grants you a revolving credit line based on your home’s equity—the market value of your home minus what you owe on your mortgage. Unlike a traditional loan that provides a single lump sum, a HELOC allows you to draw, repay, and re-borrow funds as needed during a specific timeframe called the ‘draw period.’ Because your home secures the loan, HELOCs typically offer lower interest rates than unsecured credit.
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If you’ve built up equity in your home, you may have access to a powerful financial tool. Think of your home’s equity as money saved in a piggy bank; a Home Equity Line of Credit (HELOC) acts like a debit card for that bank, letting you borrow, repay, and borrow again as needed.

However, because a HELOC is secured by your home, it’s crucial to understand how it works before you start borrowing.

How a HELOC Is Structured

A HELOC isn’t a simple, one-time loan. It operates in two distinct phases, and the amount you can borrow is based on your home’s value.

Calculating Your Credit Limit

Lenders determine your credit limit using a combined loan-to-value (CLTV) ratio. They’ll typically let you borrow up to 85% of your home’s appraised value, minus your outstanding mortgage balance.

  • Home Value: $500,000
  • Lender’s CLTV Ratio (85%): $425,000
  • Outstanding Mortgage Balance: $300,000
  • Your Potential HELOC Limit: $125,000 ($425,000 – $300,000)

The Draw Period

Typically lasting 10 years, the draw period is when you can actively borrow from your line of credit. You can take out funds as needed, up to your limit. During this phase, you are often only required to make interest-only payments. While this keeps your monthly costs low, it means you aren’t paying down the amount you actually borrowed (the principal).

The Repayment Period

Once the draw period ends, you can no longer borrow money. You enter the repayment period, which generally lasts 15-20 years. Your monthly payments are recalculated to cover both principal and interest, causing them to increase significantly. This is often called “payment shock,” and it’s a critical factor to plan for. Furthermore, most HELOCs have variable interest rates, meaning your payment can change based on market conditions.

Pros and Cons of a HELOC

Pros Cons
Flexibility: Borrow only what you need, when you need it. Variable Rates: Your interest rate and payment can rise unexpectedly.
Lower Interest Rates: Rates are typically lower than personal loans or credit cards. Risk to Your Home: Defaulting on payments could lead to foreclosure.
Interest-Only Payments: Initial payments during the draw period are low. Payment Shock: Payments will jump significantly when the repayment period begins.
Potential Tax Benefits: Interest may be tax-deductible if used to buy, build, or substantially improve your home, as the IRS explains. Temptation to Overspend: Easy access to funds can encourage borrowing for non-essential purchases.

Smart Ways to Use a HELOC

A HELOC is best suited for long-term, value-adding expenses rather than short-term spending.

  • Home Renovations: It’s ideal for projects where you pay contractors in stages. These improvements can also increase your home’s value.
  • Educational Costs: You can draw funds each semester to cover tuition, avoiding a large, lump-sum student loan.
  • Consolidating High-Interest Debt: Using a lower-interest HELOC to pay off credit cards can save you money, but be careful. You are converting unsecured debt into secured debt, putting your home on the line.

HELOC vs. Home Equity Loan: What’s the Difference?

People often confuse HELOCs with home equity loans. The Consumer Financial Protection Bureau (CFPB) outlines the key distinction:

  • A HELOC is a revolving line of credit with a variable interest rate. You draw and repay funds as needed, similar to a credit card.
  • A Home Equity Loan provides a lump-sum payment upfront with a fixed interest rate and a predictable monthly payment.

Choose a HELOC for flexibility with ongoing expenses and a home equity loan when you need a specific amount of money for a one-time cost.

Frequently Asked Questions (FAQs)

1. What credit score do I need for a HELOC?
Most lenders look for a credit score of 680 or higher, with the best rates and terms reserved for applicants with scores of 740 and above.

2. Are there closing costs for a HELOC?
Sometimes. While some lenders waive them, you may have to pay for an appraisal, application fees, and attorney fees, which can range from 2% to 5% of the total credit line.

3. What happens if I can’t make my HELOC payments?
Because your home is the collateral, missing payments can have severe consequences. The lender can take legal action that may ultimately lead to foreclosure. If you’re struggling to pay, contact your lender immediately to discuss potential options.


Now that you understand how a HELOC works, explore our other resources on managing debt and improving your credit score to build a stronger financial future.

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