Compare 15 Year to 30 Year Mortgage Calculator
'/%3E%3Ccircle cx='48' cy='39' r='19' fill='%23f2c9a5'/%3E%3Cpath d='M27 35c3-16 39-17 42 2-8-8-27-9-42-2z' fill='%23374151'/%3E%3Cpath d='M21 86c5-24 49-28 56 0z' fill='%232563eb'/%3E%3Ccircle cx='41' cy='41' r='2' fill='%23111827'/%3E%3Ccircle cx='55' cy='41' r='2' fill='%23111827'/%3E%3Cpath d='M42 52c4 3 9 3 13 0' stroke='%2392400e' stroke-width='3' fill='none' stroke-linecap='round'/%3E%3C/svg%3E)
Reviewed by Calculator Editorial Team
Compare 15-year and 30-year mortgages to determine which option offers better interest savings and monthly payments. This calculator helps you analyze the financial impact of choosing a shorter-term mortgage versus the more common 30-year loan.
How to Use This Calculator
Using this mortgage comparison calculator is simple:
- Enter the home price you're considering
- Input your down payment amount
- Select the loan term (15 or 30 years)
- Enter the current interest rate
- Click "Calculate" to see the comparison
The calculator will display monthly payments, total interest paid, and total cost for both loan terms, allowing you to make an informed decision.
Key Differences Between 15-Year and 30-Year Mortgages
While both 15-year and 30-year mortgages serve the same purpose, they have distinct characteristics that affect your financial situation:
Interest Rates
15-year mortgages typically have higher interest rates than 30-year mortgages because they offer lower risk to lenders. This means you'll pay more in interest over the life of the loan.
Monthly Payment Formula
M = P [i(1 + i)^n] / [(1 + i)^n - 1]
Where:
- M = Monthly payment
- P = Principal loan amount
- i = Monthly interest rate (annual rate divided by 12)
- n = Number of payments (loan term in years × 12)
Loan Terms
The primary difference is the loan term. A 15-year mortgage has half the term of a 30-year mortgage, which means you'll pay off the loan faster but with higher monthly payments.
Refinancing Options
With a 15-year mortgage, you'll have fewer years to refinance, which may limit your ability to take advantage of lower interest rates in the future.
Cash Flow
Because 15-year mortgages have higher monthly payments, they can strain your cash flow, especially if you have other financial obligations.
Worked Example
Let's compare a $300,000 mortgage with a 5% down payment and a 5% interest rate for both 15-year and 30-year terms.
| Term | Monthly Payment | Total Interest | Total Cost |
|---|---|---|---|
| 15-Year | $2,154.26 | $123,270.00 | $423,270.00 |
| 30-Year | $1,487.65 | $184,495.00 | $484,495.00 |
In this example, the 15-year mortgage has higher monthly payments but saves you $101,225 in total interest and $101,225 in total cost over the life of the loan.
Frequently Asked Questions
Which mortgage term is better, 15-year or 30-year?
The better option depends on your financial situation. A 15-year mortgage can save you money on interest but requires larger monthly payments. A 30-year mortgage offers lower monthly payments but costs more in interest over time.
Can I refinance a 15-year mortgage to a 30-year mortgage?
Yes, you can refinance a 15-year mortgage to a 30-year mortgage, but you'll typically need good credit and may face closing costs and fees.
What are the pros and cons of a 15-year mortgage?
Pros: Lower total interest payments, pay off the loan faster, potential tax benefits. Cons: Higher monthly payments, limited refinancing options, higher upfront costs.
How does a 15-year mortgage affect my credit score?
Making on-time payments on a 15-year mortgage can help improve your credit score, but the shorter term means you'll have fewer years to build credit history.