Interest-Only Mortgage Calculator

Calculate interest-only mortgage payments, compare with traditional mortgages, and understand the long-term costs. Interest-only loans offer lower initial payments but higher total costs.

Loan Details

Additional Monthly Costs (Optional)

Payment Breakdown

Interest-Only Payment: $0.00
Fully Amortizing Payment: $0.00
Total Monthly Payment: $0.00

Cost Comparison

Total Interest (Interest-Only): $0
Total Interest (Traditional): $0
Interest Savings: $0

Loan Timeline

Interest-Only Period: 0 years
Amortization Period: 0 years
Payment Increase: $0

Payment Schedule Overview

Period Monthly Payment Interest Paid Principal Paid Remaining Balance

Understanding Interest-Only Mortgages

An interest-only mortgage allows borrowers to pay only the interest on their loan for a specified period, typically 5-10 years. After this period, payments increase significantly as principal repayment begins.

How Interest-Only Mortgages Work

  • Interest-Only Period: You pay only interest, principal balance remains unchanged
  • Payment Adjustment: After interest-only period, payments increase to include principal
  • Loan Terms: Typically 5-10 year interest-only periods with 20-30 year total terms
  • Risk Factors: Higher total interest costs and payment shock when principal payments begin

Pros and Cons

Advantages

  • Lower initial monthly payments
  • More cash flow for other investments
  • Potential for higher loan amounts
  • Flexibility during interest-only period

Disadvantages

  • Higher total interest costs
  • Payment shock when principal payments begin
  • No equity buildup during interest-only period
  • Risk of negative amortization in some cases

Who Should Consider Interest-Only Mortgages?

  • Real Estate Investors: Those expecting property value appreciation
  • High-Income Borrowers: Who can afford higher payments later
  • Business Owners: Needing cash flow for business investments
  • Short-Term Owners: Planning to sell before payments increase

Risk Considerations

  • Payment Shock: Significant increase in monthly payments
  • Interest Rate Risk: Variable rates can increase payments
  • Refinancing Risk: May not be able to refinance when payments adjust
  • Equity Risk: No equity buildup during interest-only period

Important: Interest-only mortgages are complex financial products that may not be suitable for all borrowers. Consider your financial situation, risk tolerance, and long-term plans before choosing this loan type. Consult with a financial advisor or mortgage professional.

Related Calculators