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Oct 4, 2017 12:21 PM
(834 views)

Hello,

I want to extract from a loan schedule the formula that represents the sum of cash interest interests over the loan period and the formula that corresponds to principal repayment knowing that there is also compounded interest. I want to define a variable to change while others are predefined (example interest rate is defined but the variable is the monthly repayment of the loan which I can define as x1, x2, etc.)

My question is:

1- how to input a loan schedule in JMP Pro

2- how to instruct JMP Pro to display the formula for the sum mentioned above

Many thanks for your help

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Oct 5, 2017 1:45 AM
(814 views)

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Oct 5, 2017 3:01 AM
(808 views)

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Oct 5, 2017 3:16 AM
(804 views)

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Oct 5, 2017 11:03 AM
(780 views)

Hello,

The script below creates a table that has Principal and Interest payment information for a 30 year loan with monthly payments. You can adjust the initial Principal and Interest Rate in the table variables. I also included columns for cumulative principal and interest payments as well as the remaining balance. I'm not sure if this is what you were looking for, but I hope it helps you get there.

Michael

```
New Table( "Loan Payments",
Add Rows( 360 ),
New Table Variable( "Principal", 100000 ),
New Table Variable( "Interest Rate", 0.04 ),
New Column( "Month", Numeric, "Continuous", Format( "Best", 12 ), Set Values( 1 :: 360 ) ),
New Column( "Principal Payment",
Numeric,
"Continuous",
Format( "Currency", "USD", 17, 2 ),
Formula( Principal Payment( :Interest Rate / 12, :Month, 360, -:Principal ) )
),
New Column( "Interest Payment",
Numeric,
"Continuous",
Format( "Currency", "USD", 17, 2 ),
Formula( Interest Payment( :Interest Rate / 12, :Month, 360, -:Principal ) )
),
New Column( "Total Payment",
Numeric,
"Continuous",
Format( "Currency", "USD", 17, 2 ),
Formula( Payment( :Interest Rate / 12, 360, -:Principal ) )
),
New Column( "Cumulative Principal",
Numeric,
"Continuous",
Format( "Currency", "USD", 17, 2 ),
Formula( Col Cumulative Sum( :Principal Payment ) )
),
New Column( "Cumulative Interest",
Numeric,
"Continuous",
Format( "Currency", "USD", 17, 2 ),
Formula( Col Cumulative Sum( :Interest Payment ) )
),
New Column( "Remaining Balance",
Numeric,
"Continuous",
Format( "Currency", "USD", 17, 2 ),
Formula( :Principal - :Cumulative Principal )
)
)
```

Michael Crotty

Sr Statistical Writer

JMP Development

Sr Statistical Writer

JMP Development