How Does a HELOC Work? Complete 2026 Guide
A HELOC (Home Equity Line of Credit) works like a credit card secured by your home. During a 5–10 year draw period, you borrow as needed up to your credit limit and pay interest only on what you use. After the draw period, you enter a 10–20 year repayment period where you can no longer borrow and must pay back the balance in monthly installments. HELOC rates are typically variable, tied to the prime rate, and range from 7.5%–11% in 2026.
Key Takeaways
- A HELOC has two phases: a draw period (5–10 years) and a repayment period (10–20 years).
- During the draw period, borrow as needed and pay interest only on what you use — like a credit card.
- Rates are variable, tied to the prime rate plus a lender margin — typically 7.5%–11% in 2026.
- Minimum payments during the draw period are often interest-only, keeping initial costs low.
- When the repayment period starts, payments can increase significantly (“payment shock”).
- Some lenders offer fixed-rate conversion options to lock portions of your balance.
Table of Contents
The Two Phases of a HELOC
Phase 1: Draw Period (5–10 years)
During the draw period, your HELOC works like a revolving credit line. You can borrow money, make payments, and borrow again — up to your approved credit limit. Most lenders provide checks, a debit card, or online transfers to access your funds.
Minimum payments during the draw period are typically interest-only. For example, a $50,000 balance at 9% requires just $375/month in interest. You can pay more than the minimum to reduce your principal, and the paid-down amount becomes available to borrow again.
Phase 2: Repayment Period (10–20 years)
When the draw period ends, you can no longer borrow. Your outstanding balance converts to a standard amortizing loan that you repay over the remaining term. Payments now include both principal and interest, which often means a significant increase.
Using the same example: that $50,000 balance at 9% over a 15-year repayment period becomes $507/month — a 35% increase from the $375 interest-only payment. This transition is called “payment shock,” and it’s the most important thing to plan for with a HELOC.
How HELOC Rates Work
Most HELOC rates follow this formula: Prime Rate + Lender Margin = Your Rate
In 2026, the prime rate is approximately 7.5%. Lender margins range from 0.5% to 3.5% depending on your credit profile. So a borrower with excellent credit might pay 7.5% + 0.5% = 8.0%, while a fair-credit borrower pays 7.5% + 2.5% = 10.0%.
Because the rate is variable, it changes whenever the Federal Reserve adjusts interest rates. A 0.25% Fed rate increase directly raises your HELOC rate by 0.25%.
To protect yourself from rate increases, look for lenders offering:
- Lifetime rate cap: The maximum your rate can ever reach (typically 18%–21%).
- Periodic rate cap: Maximum increase per adjustment period (not all HELOCs have this).
- Fixed-rate conversion: Lock portions of your balance at a fixed rate. Learn more about fixed-rate HELOCs.
Real-World HELOC Example
Meet Sarah, a homeowner with a $350,000 home and a $200,000 mortgage who wants to renovate her kitchen:
- Available equity: $350,000 × 85% − $200,000 = $97,500
- HELOC approved: $80,000 at 8.5% variable rate
- Draw period: 10 years | Repayment period: 15 years
Year 1: Sarah draws $15,000 for demolition and plumbing. Monthly interest payment: $106.
Year 1 (month 6): She draws $25,000 more for cabinets and countertops. Balance: $40,000. Monthly interest: $283.
Year 2: Final draws of $10,000 for finishing. Balance: $50,000. Monthly interest: $354.
Years 3–10: Sarah makes interest-only payments of $354/month. She occasionally pays extra, reducing the balance to $40,000 by year 10.
Year 11 (repayment begins): $40,000 balance amortized over 15 years at 9% (assuming rate increased). New payment: $406/month — only $52 more, because she paid down principal during the draw period.
Sarah’s strategy of paying extra during the draw period significantly reduced her payment shock. Compare HELOC lenders.
HELOC vs. Home Equity Loan: Quick Comparison
| Feature | HELOC | Home Equity Loan |
|---|---|---|
| How you get money | Draw as needed (revolving) | One lump sum |
| Interest rate | Variable (usually) | Fixed |
| Interest charged on | Only what you borrow | Full loan amount |
| Monthly payment | Varies (often interest-only at first) | Fixed |
| Best for | Ongoing or uncertain expenses | One-time, defined expenses |
For a comprehensive comparison, read our home equity loan vs. HELOC guide.
Frequently Asked Questions
Do I pay interest on the entire HELOC limit?
No. You only pay interest on the amount you actually borrow, not your total credit limit. If you have a $100,000 HELOC and draw $30,000, you pay interest on $30,000. The remaining $70,000 in available credit costs you nothing until you draw it.
What happens when the HELOC draw period ends?
You can no longer borrow, and the outstanding balance converts to a repayment loan. Monthly payments typically increase because they now include principal plus interest (instead of interest-only). Plan for this transition — the payment increase can be 30%–50% or more.
Can I make principal payments during the HELOC draw period?
Yes. While minimum payments are usually interest-only, you can pay extra toward principal at any time. This reduces your balance, lowers future interest charges, and makes the transition to repayment less jarring. Paid-down amounts become available to borrow again during the draw period.
How is a HELOC different from a credit card?
Both are revolving credit, but a HELOC is secured by your home (lower rates, 7.5%–11%) while credit cards are unsecured (higher rates, 20%–28%). HELOCs have draw and repayment periods, while credit cards have no fixed repayment timeline. HELOC interest may be tax-deductible for home improvements; credit card interest never is.
Last updated: April 2026. Rates and requirements are subject to change. Always verify current terms with lenders directly.