Second Lien vs. First Lien: What’s the Difference?
The lien position matters—a lot. Here’s what second lien (HELOC) vs. first lien (cash-out refinance) means for you.
What Is Lien Position?
First lien: Primary mortgage - gets paid first if home is sold Second lien: HELOC or home equity loan - gets paid after first mortgage
Comparison Table
| Factor | First Lien (Refinance) | Second Lien (HELOC) |
|---|---|---|
| Position | #1 in line | #2 in line |
| Closing Costs | High ($10k+) | Low (~$750) |
| Rate | Lower | Higher |
| Risk to Lender | Lower | Higher |
| Keeps First Mortgage | No | Yes |
Why Second Liens Cost More
Second lien lenders take more risk:
- If home sells, first mortgage gets paid first
- Second lien might not get fully repaid
- Higher risk = higher rate
Typical rate spread: 1-2% higher than first mortgage
When Each Makes Sense
First Lien (Cash-Out Refinance):
- You want lowest possible rate
- Large borrowing amount ($75k+)
- Staying in home 10+ years
- Refinance rate is competitive
Second Lien (HELOC):
- You love your first mortgage rate
- Need flexibility (ongoing access)
- Might move within 5 years
- Smaller borrowing amount
Combined LTV Limits
Lenders care about combined loan-to-value (CLTV):
| Loan Type | Max CLTV |
|---|---|
| First lien only | 80-97% |
| Second lien (under 80% CLTV) | Easier approval |
| Second lien (80-85% CLTV) | Harder but possible |
| Second lien (85%+ CLTV) | Very difficult |
Example:
- Home: $400,000
- First mortgage: $280,000 (70% LTV)
- HELOC available: Up to $40,000 (to reach 80% CLTV)
Our Calculator Considers Both
We show:
- HELOC (second lien) payment and costs
- Cash-out refinance (first lien) payment and costs
- Total cost comparison over 10 years
- Which wins based on your timeline
The “Subordination” Option
Can you keep first mortgage AND add a second lien?
Yes, through subordination:
- First lender agrees to remain in first position
- HELOC becomes second lien
- Requires first lender approval
- Depends on your LTV and payment history