Note: I have updated this post with more options.
Have you ever wanted an amortization schedule where you can set the rate for one term and then change the rate for another term, and change the rate and term a total of six times? If you have, try the workbook “AmortizationChangeRate”. As usual the yellow cells are input cells. The example below shows a $135,000 loan at 2% for the first 6 months, 3% for the next 6 months and 4% for the last six months. The payment changes each time the rate changes. There is also a column for extra payments.
At the bottom of the input rates is the average weighted rate. In this case 3.00%. Making a loan at 3% for the full 18 months is not the same as this variable rate structure. The present value of the payments for an 18 month, 3% loan discounted at 3% would be $135,000, just as you would expect. This loan structure discounted at 3% is $134,550.90. If we change the structure from 6 month terms to 90 day terms and left the rates the same, the present value difference discounted at 3% is $128,339.81 vs. $135,000.
This might come in handy when considering restructuring a loan to see the changes in present value.
Download workbook “AmortizationChangeRate” from:
Downloads Written in Excel 2013