In this guide
What is a HELOC?
A Home Equity Line of Credit (HELOC) is a revolving line of credit secured against the equity in your home. It works similarly to a credit card — you are approved for a maximum credit limit, you can draw from that limit whenever you need funds, repay it, and draw again — but the interest rate is much lower because your home is used as collateral.
Your home equity is the difference between what your home is currently worth and what you still owe on your mortgage. For example, if your home is worth $400,000 and your mortgage balance is $200,000, you have $200,000 in equity. A HELOC lets you access a portion of that equity as a flexible credit line without selling your home or refinancing your mortgage.
A HELOC = a credit card backed by your home's equity. You borrow only what you need, when you need it, and only pay interest on the amount you actually use.
How does a HELOC work?
When you are approved for a HELOC, the lender sets a maximum credit limit based on your home's value, your existing mortgage balance, and your creditworthiness. You can then access funds up to that limit at any time during the draw period — via a debit card linked to the account, by writing a check, or through an online transfer.
The key difference from a traditional loan is flexibility. You do not receive a lump sum — instead you have an open credit line you can use repeatedly. You only pay interest on the amount you have actually drawn, not on your full credit limit.
A simple example
| Detail | Example |
|---|---|
| Home value | $400,000 |
| Mortgage balance | $200,000 |
| Your home equity | $200,000 |
| Lender max LTV (85%) | $340,000 |
| Maximum HELOC limit | $340,000 − $200,000 = $140,000 |
| Amount you choose to draw | $50,000 |
| Interest charged on | $50,000 only — not the full $140,000 |
Draw period vs repayment period
Every HELOC has two distinct phases. Understanding both is critical before you apply — many first-time borrowers are caught off guard by how significantly payments change between phases.
HELOC timeline — typical 30-year structure
Draw period (typically 5–10 years)
During the draw period you can borrow from your credit line as needed. Monthly payments are typically interest-only, which keeps them low. You can repay the balance and redraw funds as many times as you like up to your credit limit.
Repayment period (typically 10–20 years)
Once the draw period ends you can no longer borrow. Your outstanding balance is then repaid over the repayment period with fully amortised principal and interest payments. These payments are substantially higher than your draw-period payments — plan your budget around this before you apply.
Always calculate what your repayment-period payment will be before drawing on a HELOC. On a $100,000 balance at 9% over 20 years, repayment payments are roughly $900/month — compared to $750/month interest-only during the draw period. Use our free calculator to model your specific numbers.
How HELOC interest rates work
Most HELOCs carry a variable interest rate tied to the US Prime Rate, which moves in step with Federal Reserve policy decisions. Your lender adds a fixed margin on top of Prime to arrive at your rate.
| Rate Component | Example |
|---|---|
| US Prime Rate | 8.50% |
| Lender margin (based on your credit) | + 0.50% |
| Your HELOC rate | = 9.00% |
Because the rate is variable, your monthly payment can rise or fall over time whenever the Fed adjusts rates. Some lenders offer a fixed-rate lock option on drawn balances — worth asking about if you prefer payment certainty.
For current average HELOC rates by credit score range, see our HELOC Rates Guide.
How much can you borrow with a HELOC?
Your maximum HELOC credit limit is determined by your lender's maximum combined loan-to-value (CLTV) ratio — typically 80–90% of your home's appraised value, minus your existing mortgage balance.
Use this formula to estimate your maximum:
(Home Value × Lender Max LTV%) − Mortgage Balance = Maximum HELOC
Example: ($400,000 × 85%) − $200,000 = $140,000 maximum HELOC
Your actual approved limit may be lower depending on your credit score, debt-to-income ratio, and the lender's underwriting criteria. Use our free borrowing power calculator to estimate your specific situation instantly.
What can you use a HELOC for?
HELOCs are flexible — there are few restrictions on how you use the funds. Common and recommended uses include:
Home improvements
The most common use — and potentially tax-deductible if used to improve the property.
Debt consolidation
Replace high-rate credit card debt with a lower HELOC rate — can save thousands.
Education costs
Fund tuition or education expenses at a lower rate than most student loans.
Emergency fund
Use as a safety net — only draw if needed and only pay interest on what you use.
Investment property
Fund a deposit on a rental property using your primary home's equity.
Medical expenses
Cover large unexpected medical bills at a far lower rate than medical financing.
Using a HELOC to fund everyday expenses, holidays, or depreciating assets (cars, electronics) is generally not recommended. Your home is the collateral — if you cannot repay, you risk foreclosure.
HELOC pros and cons
Advantages
- Borrow only what you need, when you need it
- Lower interest rates than credit cards or personal loans
- Interest-only payments during draw period
- Reusable — repay and draw again
- Interest may be tax-deductible for home improvements
- No interest charged on unused credit
- Flexible repayment during draw period
Disadvantages
- Variable rate — payments can rise with Fed rate hikes
- Your home is collateral — default risk is foreclosure
- Payment shock when repayment period begins
- Lender can freeze or reduce your line of credit
- Closing costs and annual fees may apply
- Temptation to overborrow against home equity
- If home value falls, access may be restricted
Who qualifies for a HELOC?
Lender requirements vary but most look for the following qualifying criteria:
| Requirement | Typical Standard | Notes |
|---|---|---|
| Credit score | 620 minimum; 700+ for best rates | Largest single factor affecting your rate |
| Home equity | 15–20% equity remaining after HELOC | Most lenders cap CLTV at 80–85% |
| Debt-to-income ratio | Below 43–50% | All monthly debts ÷ gross monthly income |
| Income | Documented, stable income | W-2s, tax returns, pay stubs required |
| Payment history | No recent late mortgage payments | Lenders scrutinise mortgage history closely |
| Property type | Primary residence preferred | Investment properties face stricter terms |
For a complete breakdown of qualification requirements, see our Credit Score Guide.
HELOC vs home equity loan — what is the difference?
Both products let you borrow against your home's equity — but they work very differently. The right choice depends on how you plan to use the funds.
| Feature | HELOC | Home Equity Loan |
|---|---|---|
| How you receive funds | Draw as needed (revolving) | Lump sum upfront |
| Interest rate | Variable (usually) | Fixed |
| Monthly payment | Changes with rate & balance | Fixed — predictable |
| Best for | Ongoing or uncertain costs | One large, known expense |
| Interest charged on | Amount drawn only | Full loan amount from day 1 |
| Flexibility | High — draw, repay, redraw | Low — one-time disbursement |
| Rate risk | Higher — rate can rise | None — rate is locked |
Choose a HELOC if your costs are ongoing, phased, or uncertain in total — such as a multi-stage renovation or an emergency fund. Choose a home equity loan if you need a specific, known amount for a single purpose and want the certainty of a fixed monthly payment.
How to apply for a HELOC
- Check your credit score — pull your free report at AnnualCreditReport.com and address any errors before applying.
- Calculate your equity — use our free calculator to estimate how much you can borrow.
- Shop multiple lenders — get quotes from at least three lenders (banks, credit unions, online lenders). Rates and margins vary significantly.
- Gather your documents — recent pay stubs, W-2s or tax returns (2 years), mortgage statement, and proof of homeowners insurance.
- Submit your application — the lender will order an appraisal of your home and underwrite your application.
- Close and access your line — once approved and closed (typically 2–6 weeks), you can start drawing funds immediately.