That question comes down to two numbers: home equity and loan-to-value (LTV) ratio. Lenders use both to decide how much they'll let you borrow and on what terms. Once you understand the math, you'll know roughly where you stand before you ever apply.
This guide walks through the exact formulas, worked examples, and how a mortgage advisor like ClearPoint Mortgage Advisors can help you make sense of your numbers when you're ready to tap your equity.
Key Takeaways
- Home equity equals your home's current value minus what you still owe
- LTV divides your loan balance by your home's appraised value, shown as a percentage
- Lower LTV typically unlocks better rates and loan terms
- CLTV counts every loan against your property, including a new HELOC or second mortgage
- Extra principal payments and property appreciation both build equity over time
What Is Home Equity and Why It Matters
Home equity is the slice of your house you own outright, free of any lender's claim. That figure shifts every time you make a mortgage payment or the local market moves.
Equity grows in two ways:
- Paying down principal — each mortgage payment chips away at your balance
- Appreciation — rising market value increases your equity even when your loan balance stays flat
This built-up value is a real financial resource. Homeowners tap it through HELOCs, home equity loans, or cash-out refinancing to consolidate debt, fund renovations, or cover major expenses. Before you tap anything, you need to know exactly how much you have.
How to Calculate Home Equity (Step-by-Step)
The formula is simple:
Home Value − Outstanding Mortgage Balance = Home Equity
A Worked Example
Say your home is worth $350,000 and you owe $150,000 on your mortgage:
$350,000 − $150,000 = $200,000 in equity
That's the starting point for any equity-based financing decision.
Finding Your Numbers
- Determine home value. Use a formal appraisal for accuracy, or an online estimator for a ballpark figure. Estimators can miss by thousands in fast-moving markets.
- Pull your mortgage balance. Take the current balance from your latest loan statement—not the original loan amount.
- Subtract every lien. If you have a first mortgage plus a second loan, subtract all balances. Missing a second lien inflates equity and misleads your expectations.
Making extra principal payments—even $100 a month—builds equity faster than waiting on appreciation alone.
What Is LTV and How to Calculate It
LTV measures the percentage of your home's value that's financed by debt. It's the flip side of equity, and lenders lean on it heavily when setting loan terms.
Formula: Current Loan Balance ÷ Current Appraised Value = LTV
For example, a $140,000 loan balance against a $200,000 appraised value:
$140,000 ÷ $200,000 = 70% LTV
When You Add a Second Loan: CLTV
If you're adding a HELOC or second mortgage, lenders calculate Combined Loan-to-Value (CLTV) instead:
All Loan Balances Combined ÷ Current Appraised Value = CLTV
Example: a $140,000 first mortgage plus a $30,000 HELOC against a $200,000 home:
($140,000 + $30,000) ÷ $200,000 = 85% CLTV
Why the 80% Mark Matters
Lender maximum LTV/CLTV thresholds commonly fall between 80% and 85%, though this varies by lender and loan type. According to Chase's guidance on HELOCs, 80% CLTV is a common limit for approval.
There's another 80% threshold on conventional mortgages. The CFPB notes that borrowers can typically request PMI cancellation once their balance drops to 80% of the original value. Automatic termination is generally required at 78%.
How LTV and Equity Affect Your Borrowing Power
Lenders don't just look at your equity in isolation. They calculate the maximum loan amount allowed at their LTV cap, then subtract what you already owe.
Formula: (Home Value × Max LTV%) − Current Mortgage Balance = Available Credit
Example
If your home is worth $400,000, you owe $250,000, and your lender's cap is 80%:
$400,000 × 80% = $320,000 maximum secured balance $320,000 − $250,000 (existing balance) = $70,000 in preliminary available credit
This is a rough illustration, not a guaranteed approval, since underwriting still applies.
Beyond LTV: What Else Lenders Check
- Credit score — a stronger score often unlocks better rates and terms
- Debt-to-income (DTI) ratio — lenders want to see manageable existing debt
- Income stability — consistent history matters; self-employed borrowers may use bank statements or 1099s
Every lender weighs these factors differently, and program requirements vary. ClearPoint Mortgage Advisors can review your equity and LTV position and explain which options—a HELOC, home equity loan, or cash-out refinance—may fit your goals.
Ways to Improve Your Home Equity and LTV Ratio
You have more control over these numbers than you might think.
Pay down principal faster. Every extra dollar toward principal directly increases equity and lowers LTV. Even modest additional payments add up over the life of a loan.
Raise your appraised value. Market appreciation helps, but so do improvements. HUD notes that regular maintenance and occasional improvements can increase a home's value and functionality.
A few notes on renovations:
- Not all upgrades pay off equally at appraisal time
- Structural repairs and functional updates (roofing, HVAC, kitchens) tend to matter more than cosmetic touches
- Deferred maintenance can actually work against you during an appraisal
Choosing improvements strategically, rather than chasing trends, is what actually moves your appraised value.
Home Equity Loan vs. HELOC: Which Suits Your Equity Position
Both products draw on the same equity and LTV math covered above, but they work differently.
| Feature | Home Equity Loan | HELOC |
|---|---|---|
| Structure | Lump sum | Revolving credit line |
| Rate | Fixed or adjustable | Typically variable |
| Access | One-time disbursement | Draw as needed during draw period |
| Payments | Set from day one | Often interest-only during draw, then principal + interest |
Which fits your situation:
- Home equity loan — one large, known expense and a fixed repayment plan from day one
- HELOC — ongoing or unpredictable costs; you only pay interest on what you draw
Either way, available equity and LTV still cap how much you can borrow. ClearPoint Mortgage Advisors offers both products and can help match the right option to your goals and current equity position.
Frequently Asked Questions
How do I calculate the monthly payment on a HELOC?
During the draw period, many HELOCs are interest-only: monthly payment ≈ balance × (annual rate ÷ 12). In repayment, principal is added, so the payment rises. Variable rates mean the amount can change month to month.
What happens at the end of the HELOC draw period?
The line converts to a repayment period. You can no longer draw new funds, and monthly payments typically increase since they now include both principal and interest.
What is a good LTV for a HELOC?
Most lenders prefer a combined LTV (CLTV) of 80% to 85% or lower for the best terms. Exact thresholds vary by lender, property type, and your overall financial profile.
How hard is it to qualify for a HELOC, and can I get one with a 650 credit score?
Qualification depends on your equity, debt-to-income (DTI), and credit profile together—not credit score alone. A 650 score may qualify with some lenders, though usually at higher rates than stronger-score borrowers.
How is a home equity loan different from a home equity line of credit?
A home equity loan gives you a lump sum, often at a fixed rate, with set payments from day one. A HELOC is revolving credit, similar to a credit card, that you draw from as needed, usually at a variable rate.
What does LTV mean?
LTV stands for loan-to-value ratio. It's your loan balance divided by your home's value, expressed as a percentage, and lenders use it to gauge risk on a loan.
