Compare long-term mortgage options instantly. Enter your home value, down payment, and interest rate to see how a 30-year mortgage stacks up against a 50-year mortgage in monthly payment, total cost, and interest paid.
Our calculator lets you compare two long-term mortgage options side by side.
Simply enter:
The tool computes:
This gives you a clear picture of how extending your mortgage term from 30 to 50 years affects affordability and long-term financial impact.
A 50-year mortgage significantly lowers the monthly payment compared to a 30-year mortgage.
While this may improve affordability, it comes at a cost—dramatically higher total interest.
The main downside of a 50-year mortgage is the substantially higher interest expense.
Because payments stretch over 50 years, even a modest interest rate results in large cumulative interest.
A longer term increases the total cost by tens or even hundreds of thousands of dollars.
The calculator clearly shows the trade-off between a lower monthly payment now and higher total payments later.
A 30-year loan is often preferred because:
This is the most common mortgage option for a reason.
A 50-year mortgage can make sense when:
It is not always the cheapest option long-term, but it can help with cash flow.
The amount you need to pay each month. A 50-year term almost always reduces monthly payments—but increases lifetime interest.
This is the total amount you will pay over the entire loan period, including principal and interest.
The difference between the total repayment and your home’s original loan amount.
This value tends to be much higher for 50-year mortgages due to extended interest compounding.
Feature | 30-Year Mortgage | 50-Year Mortgage |
|---|---|---|
Monthly Payment | Higher | Lower |
Total Interest | Lower | Much Higher |
Total Loan Cost | Lower | Extremely High |
Equity Growth | Faster | Very Slow |
Refinance Options | Common | Limited |
A 50-year mortgage is helpful if your main goal is reducing monthly payments. However, it dramatically increases the total amount of interest paid, making the loan more expensive long-term. It’s best suited for borrowers prioritizing short-term affordability over total cost.
Typically, a 50-year mortgage offers a noticeably lower monthly payment—often by 20–40% depending on the loan amount and interest rate. Our calculator shows exact numbers based on your situation.
Because interest accrues over a longer period, even small rate differences become amplified over 50 years. You pay interest for an additional 20 years compared to a 30-year loan.
Yes, refinancing into a shorter term (e.g., 30, 20, or 15 years) is often possible—especially if home values rise or interest rates fall. This can significantly reduce long-term interest.
Yes, spreading payments over 50 years lowers the required monthly income, which may help borrowers pass mortgage affordability tests or qualify for larger loans.
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