Second Mortgage vs HELOC 2026: Which Is Better for You?

EC
Emily Chen
Construction & Commercial Loans Expert • 12+ Years
Published January 29, 2026 • 13 min read

🏠 Second Mortgage vs HELOC: Key Difference

Second Mortgage (Home Equity Loan): Lump sum, fixed rate (7.5-8.5%), fixed payment. HELOC: Line of credit, variable rate (7.0-7.6%), interest-only payments during draw period. Both: Use home equity, second lien position, 80-85% max LTV.

Second mortgage vs HELOC 2026: Second mortgage (home equity loan): Receive lump sum at closing, fixed rate 7.5-8.5%, fixed monthly payment, repay over 5-30 years. Best for: One-time expenses (home renovation, debt consolidation). HELOC (home equity line of credit): Draw funds as needed up to credit limit, variable rate 7.0-7.6%, interest-only payments during draw period (10 years), then repayment period (10-20 years). Best for: Ongoing expenses (college tuition, emergency fund). Similarities: Both use home equity, second lien position, 80-85% max LTV, tax-deductible if used for home improvements. Compare home equity options. Related: home equity rates 2026.

📊 Quick Comparison

Second Mortgage

  • Type: Lump sum
  • Rate: 7.5-8.5% fixed
  • Payment: $606/mo ($50K, 10yr)
  • Best for: One-time expense

HELOC

  • Type: Line of credit
  • Rate: 7.0-7.6% variable
  • Payment: $292/mo interest-only
  • Best for: Ongoing expenses

Complete Comparison Table

FeatureSecond MortgageHELOC
DisbursementLump sum at closingDraw as needed
Interest Rate7.5-8.5% fixed7.0-7.6% variable
Monthly PaymentFixed (P+I)Interest-only (draw), then P+I
Payment Example ($50K)$606/mo (10 years)$292/mo (interest-only)
Term5-30 years10yr draw + 10-20yr repay
Closing Costs2-5% ($1K-$2.5K on $50K)$0-$500 (often waived)
Best ForOne-time expenseOngoing/flexible needs
Rate StabilityStable (fixed)Can increase
FlexibilityLow (lump sum only)High (draw as needed)

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Second Mortgage (Home Equity Loan) Explained

How Second Mortgages Work

What it is: Loan secured by your home equity. Receive lump sum at closing. Repay with fixed monthly payments over 5-30 years. Rate: Fixed 7.5-8.5% (2026). Amount: Borrow up to 80-85% of home value minus first mortgage.

📊 Second Mortgage Example

Home Value: $400,000

First Mortgage Balance: $250,000

Max LTV: 85% ($340,000)

Available Equity: $340K - $250K = $90,000

Borrow: $50,000 at 8.0% fixed, 10 years

Monthly Payment: $606 (principal + interest)

Total Interest: $22,720 over 10 years

✅ PROS

  • Fixed rate: Payment never changes
  • Predictable: Know exact payoff date
  • Lower rate: Than credit cards (19%+)
  • Tax deductible: If used for home improvements
  • Lump sum: Get all money upfront

❌ CONS

  • Higher rate: Than HELOC (7.5% vs 7.0%)
  • Closing costs: 2-5% ($1K-$2.5K on $50K)
  • Less flexible: Can't reborrow
  • Risk home: Foreclosure if you default
  • Pay interest: On full amount immediately

Best Uses for Second Mortgage

  • Home renovation: $50K kitchen remodel (know exact cost upfront)
  • Debt consolidation: Pay off $40K credit cards (19% → 8%)
  • Major purchase: $30K car, $25K wedding (one-time expense)
  • Medical bills: $60K surgery (lump sum needed)
  • Investment property: $80K down payment (fixed timeline)

HELOC (Home Equity Line of Credit) Explained

How HELOCs Work

What it is: Revolving credit line secured by home equity. Draw funds as needed (like credit card). Rate: Variable 7.0-7.6% (2026). Term: 10-year draw period (interest-only), then 10-20 year repayment (principal + interest).

📊 HELOC Example

Home Value: $400,000

First Mortgage Balance: $250,000

HELOC Credit Limit: $90,000 (85% LTV)

Draw: $50,000 at 7.0% variable

Draw Period (10 years): $292/mo interest-only

Repayment Period (20 years): $388/mo (P+I)

Total Interest: $35,040 + $43,120 = $78,160

✅ PROS

  • Lower rate: 7.0% vs 8.0% second mortgage
  • Flexible: Draw only what you need
  • Low/no closing costs: Often waived
  • Interest-only: Lower payments during draw
  • Revolving: Pay down, reborrow

❌ CONS

  • Variable rate: Can increase (7.0% → 9.0%)
  • Payment shock: Jumps after draw period
  • Temptation: Easy to overspend
  • Risk home: Foreclosure if you default
  • More interest: If you only pay minimum

Best Uses for HELOC

  • College tuition: Draw $20K/year for 4 years (ongoing expense)
  • Home renovations: Multiple projects over time (kitchen, bath, roof)
  • Emergency fund: $50K backup (only pay interest if you use it)
  • Business expenses: Variable cash flow needs
  • Investment opportunities: Draw when deals arise

Which Should You Choose?

✅ Choose Second Mortgage If:

  • One-time expense: Know exact amount needed (home renovation, debt consolidation)
  • Want fixed rate: Prefer payment stability, don't want rate to increase
  • Rates rising: Lock in fixed rate before rates go up
  • Budgeting: Want predictable payment for planning
  • Discipline: Won't be tempted to overspend with credit line

✅ Choose HELOC If:

  • Ongoing expenses: Need flexibility to draw over time (college, multiple projects)
  • Emergency fund: Want backup but may not use it (only pay interest if you draw)
  • Lower initial payment: Prefer interest-only payments during draw period
  • Rates falling: Variable rate will drop if Fed cuts rates
  • Uncertain amount: Don't know exact amount needed

💡 Pro Tip: Hybrid Strategy

Best of both worlds: Get HELOC for flexibility, but make principal payments during draw period to avoid payment shock. Or get second mortgage for known expense + small HELOC for emergencies.

Example: $50K second mortgage for kitchen renovation (fixed 8.0%) + $25K HELOC for emergencies (variable 7.0%, only use if needed). Compare both options.

Frequently Asked Questions

What's the difference between a second mortgage and a HELOC?

Second mortgage (home equity loan): Lump sum at closing, fixed rate (7.5-8.5%), fixed payment, repay over 5-30 years. HELOC: Line of credit, draw as needed, variable rate (7.0-7.6%), interest-only payments during 10-year draw period, then principal + interest for 10-20 years. Key differences: (1) Disbursement: Lump sum vs draw as needed. (2) Rate: Fixed vs variable. (3) Payment: Fixed P+I vs interest-only then P+I. (4) Flexibility: One-time vs revolving. Best for: Second mortgage = one-time expense. HELOC = ongoing/flexible needs. Compare rates for both.

Which has a lower interest rate: second mortgage or HELOC?

HELOC typically has lower initial rate. 2026 rates: HELOC 7.0-7.6% variable vs second mortgage 7.5-8.5% fixed. Why HELOC lower: Variable rate = lender can adjust if rates rise. But: HELOC rate can increase. Example: Start at 7.0%, rise to 9.0% if Fed raises rates. Second mortgage: Fixed 8.0% = never changes. Total cost comparison ($50K, 10 years): HELOC $35K interest (if rate stays 7.0%) vs second mortgage $22K interest. But if HELOC rate rises to 9.0% = $45K interest. Bottom line: HELOC cheaper if rates stable/falling. Second mortgage cheaper if rates rising.

Can I have both a second mortgage and a HELOC?

Yes, but combined LTV can't exceed 85%. Example: $400K home, $250K first mortgage = $90K available equity (85% LTV). You could get $60K second mortgage + $30K HELOC = $90K total. Why do this: Second mortgage for known expense (kitchen renovation), HELOC for emergencies/flexibility. Considerations: (1) Two payments: Manage both loans. (2) Higher risk: More debt secured by home. (3) Qualification: Must qualify for both (income, credit, DTI). Alternative: Get larger HELOC ($90K), use $60K for renovation, keep $30K available for emergencies. More flexible, one payment.

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