What Is a HELOC? Complete Guide to Home Equity Lines of Credit
A HELOC is one of the most misunderstood financial products in homeownership. Used wisely, it’s the cheapest way to access large amounts of money for home improvements, debt consolidation, or emergencies. Used carelessly, it can put your home at risk. Here is everything you need to know.
How a HELOC Works — Step by Step
Step 1: The draw period (typically 10 years)
During the draw period you can borrow up to your credit limit, repay it, and borrow again as many times as you want — just like a credit card. Most HELOCs require interest-only payments during this phase, which keeps monthly costs very low. On a $75,000 HELOC at 7.21%, the interest-only payment is just $451/month.
Step 2: The repayment period (typically 20 years)
Once the draw period ends, you can no longer borrow from the line and must repay the outstanding balance in equal principal + interest installments over the repayment period. This is where many borrowers are caught off guard — if you used the full line and only made interest-only payments during the draw period, your payment will jump significantly when repayment begins.
How Much Can You Borrow with a HELOC?
Most lenders allow you to borrow up to 80–90% of your home’s appraised value, minus your outstanding mortgage balance.
Formula: (Home Value × Max CLTV%) − Mortgage Balance = Maximum HELOC Line
Example: $600,000 home × 85% CLTV = $510,000. Minus $350,000 mortgage balance = $160,000 maximum HELOC line.
HELOC vs Home Equity Loan vs Cash-Out Refinance
| Feature | HELOC | Home Equity Loan | Cash-Out Refinance |
|---|---|---|---|
| Rate type | Variable (Prime + margin) | Fixed | Fixed (new first mortgage) |
| Disbursement | Revolving — draw as needed | Lump sum at closing | Lump sum at closing |
| Impact on first mortgage | None — stays separate | None — stays separate | Replaces entire first mortgage |
| Current avg rate | 7.21% APR | 7.36% APR | 6.70% APR (but on full balance) |
| Closing costs | Low ($0–$500 often) | 1–3% of loan | 2–5% of new loan |
| Best for | Flexible, ongoing needs | Known lump-sum need | Also want to change first mortgage rate |
| Risk to existing mortgage | None | None | High — resets at today’s rate |
What Can You Use a HELOC For?
Lenders place no restrictions on HELOC use. Common and sensible uses include:
- Home renovations — most common use; interest may be tax-deductible if funds are used to “substantially improve” the home
- Debt consolidation — replacing 20–29% credit card debt with 7.21% HELOC debt can save thousands, but puts your home at risk
- Education costs — often cheaper than student loans for qualified borrowers
- Emergency reserve — set up a line and only draw if you face a major unexpected expense; you pay nothing if unused
- Investment property down payment — using equity in your primary home to purchase rental property
HELOC Rate Risk — The 2022–2023 Lesson
Between March 2022 and July 2023, the Federal Reserve raised the federal funds rate by 5.25% — one of the fastest rate-hiking cycles in history. HELOC rates went from roughly 4% to over 9% during this period. A borrower with $100,000 outstanding on their HELOC saw their interest-only payment go from $333/month to $750/month — a 125% increase in 16 months.
This is the core risk of a HELOC. If you need payment certainty, a fixed-rate home equity loan is the better choice. If you’re comfortable with variable rates and plan to pay down the balance quickly, the HELOC’s flexibility and currently lower starting rate may be worth it.
HELOC Tax Deductibility
HELOC interest is tax-deductible if — and only if — the funds are used to buy, build, or substantially improve the home that secures the loan. This is the “qualified residence interest” rule under the Tax Cuts and Jobs Act of 2017. Using HELOC funds for debt consolidation, education, or other non-home purposes makes the interest non-deductible. Keep detailed records of how HELOC funds are spent. Consult a tax advisor for your specific situation.