Calculator Inputs
Plotly Graph
The chart compares current debt, future debt, and maximum debt allowed under your selected CLTV ceiling.
Example Data Table
| Scenario | Property Value | First Mortgage | Current HELOC | Requested Draw | Max CLTV | Future CLTV |
|---|---|---|---|---|---|---|
| Example A | $500,000 | $260,000 | $20,000 | $30,000 | 80% | 62.00% |
| Example B | $420,000 | $250,000 | $35,000 | $25,000 | 85% | 73.81% |
| Example C | $650,000 | $300,000 | $40,000 | $60,000 | 80% | 61.54% |
Formula Used
LTV = First Mortgage Balance ÷ Property Value × 100
CLTV = (First Mortgage Balance + Current HELOC Balance) ÷ Property Value × 100
Future CLTV = (First Mortgage Balance + Current HELOC Balance + Requested Draw) ÷ Property Value × 100
Maximum Debt Allowed = Property Value × Maximum CLTV Ratio
Available HELOC Room = Maximum Debt Allowed − Current Total Debt
Equity After Draw = Property Value − Future Total Debt
These formulas help estimate how much secured borrowing room remains before reaching your lender’s combined loan-to-value limit.
How to Use This Calculator
- Enter your current property value based on an appraisal or estimate.
- Input the unpaid balance of your first mortgage.
- Add your current HELOC balance, not the credit limit.
- Enter the extra amount you want to draw.
- Set the lender’s maximum CLTV percentage.
- Optionally add an estimated HELOC rate and stress payment percent.
- Press the calculate button to view LTV, CLTV, equity, and borrowing room.
- Use the CSV or PDF buttons to export the result.
Frequently Asked Questions
1. What does HELOC LTV mean?
HELOC LTV usually refers to the relationship between your home value and secured borrowing. Many lenders also review CLTV, which combines your mortgage and HELOC balances together.
2. What is the difference between LTV and CLTV?
LTV often looks only at the first mortgage against property value. CLTV includes the first mortgage plus HELOC debt, giving a broader view of total leverage on the home.
3. Why does the calculator ask for property value?
Property value is the base used to measure leverage ratios. A higher value can increase available borrowing room, while a lower value can quickly push CLTV toward lending limits.
4. Does this calculator guarantee loan approval?
No. It estimates leverage ratios and borrowing room only. Lenders may also review credit score, income, debt-to-income ratio, occupancy, documentation, and current underwriting rules.
5. Should I enter my HELOC limit or my balance?
Use your current outstanding HELOC balance for the debt calculation. The requested draw field handles additional borrowing you are considering beyond the amount already used.
6. What is a common maximum CLTV limit?
Many lenders use limits around 80% to 85%, though this varies by product, property type, occupancy, and borrower profile. Always confirm the actual limit with your lender.
7. Why include an estimated HELOC rate?
The estimated rate helps approximate an interest-only payment on the HELOC portion after the draw. It gives a quick affordability reference, not a final billing figure.
8. When should I recheck the calculation?
Recalculate whenever your property value changes, your mortgage balance drops, your HELOC balance changes, or a lender updates maximum CLTV rules and pricing.