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Step 1
Call your bank, credit union or mortgage broker or search for interest-only mortgage rates at their Web sites (see Resources).
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Step 2
Check out the Financial Calculators Web site with the following data points (see Resources):
- Mortgage amount
- Mortgage term
- Interest rate
- Mortgage start date -
Step 3
Input the data and click "Calculate."
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Step 4
Find your payment at the top of the chart.
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Step 5
Repeat with remaining loan terms that you’ve been offered.
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Step 1
Search for mortgage rates online or contact your bank or credit union for an adjustable-rate quote.
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Step 2
Download an amortization chart for Microsoft Excel:
- Go to the Microsoft site (see Resources).
- Choose “Templates” from the menu along the horizontal bar along the top.
- Type “Mortgage Amortization” without quotes, then click "Go."
- Click on the amortization schedule, then download. -
Step 3
Open your Excel spreadsheet amortization schedule and input the following data points:
- Principal loan amount
- Interest rate
- Loan period
- Loan start date -
Step 4
Repeat with the remainder of the interest rates that you’ve been offered.
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Step 1
Look for current rates for a traditional 30-year fixed mortgage.
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Step 2
Visit the amortization calculator with the following data points (see Resources):
- Loan amount
- Mortgage term in months or years
- Interest rate
- Loan start date -
Step 3
Input the data and click "Calculate." Find your payment in the field marked "Monthly Payments."
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Step 4
Repeat with additional rates you’ve been offered.








