Home Equity
How Much Can I Borrow With a HELOC?
How lenders size a home equity line: combined loan to value ceilings, the equity math, credit and income limits, and how to estimate your line before applying.
Updated 2026-08-21| Applies to: Homeowners estimating how much equity they can access.
The short answer
Take your home's value, multiply by the program's maximum combined loan to value, then subtract every existing mortgage balance. What is left is the largest line the equity supports, before credit, income and program caps are applied. Maximum CLTV commonly lands somewhere between 80% and 90% for a primary residence and is usually lower for second homes and investment property.
The equity math
- 1.Estimate current value
- 2.Multiply by the maximum CLTV the program allows
- 3.Subtract the first mortgage balance and any other liens
- 4.The remainder is the potential line, before underwriting limits
Example
| Item | Amount |
|---|---|
| Estimated value | $320,000 |
| Program maximum CLTV at 85% | $272,000 |
| First mortgage balance | $205,000 |
| Potential line | $67,000 |
What can shrink the number
- A lower maximum CLTV tier for your credit score
- Debt to income limits, since the line payment is counted
- Occupancy: second homes and rentals usually allow less
- Property type, including condos and multi unit buildings
- The lender's own maximum line amount
What can raise it
- A higher credit score moving you to a better CLTV tier
- Paying down the first mortgage before applying
- A valuation that supports a higher value than you assumed
- Reducing revolving debt so the payment fits your ratios
General education, not a commitment to lend. HELOC availability, credit line limits, rates and closing timelines vary by lender, program, property type and current guidelines. Manny Oloyede | Mortgage Broker | NMLS 1824463 | Ultimate Mortgage Brokers LLC.
Common mistakes to avoid
- Using a listing site estimate as the value the lender will use
- Forgetting a second lien or solar loan that also counts against CLTV
- Assuming approval for the full equity amount without income to support the payment
Related loan programs
Frequently Asked Questions
People also ask
How is home equity calculated?
Home equity is your home's current market value minus your remaining mortgage balance and any other liens against the property.
Read: How to Build Home Equity FasterDoes a HELOC change my first mortgage?
No. A HELOC is a separate second lien. Your first mortgage rate, balance and payment stay exactly as they are.
Read: What Is a HELOC and How Does It Work?Can I have both?
In some cases yes, if combined loan to value, credit and income still support it, but most homeowners are better served picking one.
Read: HELOC vs Home Equity Loan: Which Fits Your Situation?Which one closes faster?
A HELOC is often faster because valuation and documentation requirements can be lighter, but timing depends on the specific program, title and property.
Read: HELOC vs Cash Out Refinance: How to DecideCan I get a HELOC right after buying?
Sometimes, but seasoning requirements and limited equity in the first year make it uncommon unless you made a large down payment.
Read: How Much Equity Do I Need for a HELOC?Can I pay more than the interest only payment?
Yes, and paying principal during the draw period restores available credit and reduces interest immediately.
Read: How Is a HELOC Payment Calculated?Terms used in this guide
- Combined Loan to Value (CLTV)
- All loans secured by a property, added together, divided by the property's value.
- Equity
- The difference between what your home is worth and what you still owe on loans secured by it.
- HELOC
- A Home Equity Line of Credit is a revolving credit line secured by your home. You draw what you need during a draw period and repay it, similar to a credit card secured by the property.
- Debt to Income Ratio
- Your monthly debt payments divided by your gross monthly income, expressed as a percentage. Lenders use it to judge whether a new mortgage payment fits your budget.
Written by
Manny Oloyede, Mortgage Broker
NMLS #1824463 | Ultimate Mortgage Brokers LLC NMLS #2619461 | Licensed in OH | KY | NC | PA | SC | TN | TX
I have worked in mortgage lending since 2018 out of the Akron / Cuyahoga Falls Branch, helping buyers, homeowners and investors across Northeast Ohio and every state where I am licensed. These guides reflect the questions I answer most often, written the way I would explain them on a call.
Keep reading
What Is a HELOC and How Does It Work?
How a home equity line of credit works: draw period, repayment period, variable rates, combined loan to value limits and what a HELOC costs to keep open.
Home EquityHow Much Equity Do I Need for a HELOC?
How much home equity HELOC programs typically require, why lenders keep an equity cushion, and what to do when you are close but not quite there.
Home EquityHow Is a HELOC Payment Calculated?
How interest only draw payments, average daily balance interest, variable rate changes and the repayment period step up combine to set your HELOC payment.
Questions about your own numbers?
Send over your goal, income type and timeline and you'll get a straight answer on what is realistic.