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2 Amortization Table Apr 22.notebook April 24, 2015 AMORTIZATION TABLES An amortization table or schedule shows The regular blended payment The portion of each payment that is interest The portion of each payment that is principal The outstanding balance after each payment Amortization tables are usually in the form of aspreadsheet . Sample: Rita buys a $120 000 home. She has a down payment of $20 000. She needs a mortgage of $100 000. The bank offers Rita a 25year mortgage at 8.5%. The payments for this mortgage are displayed in the spreadsheet on the next page. The spreadsheet shows the first 18 payments and the last 18 payments. Interpreting the amortization table: Part of each payment is interest and the rest reduces the principal. For example, in the first month: The interest is 0.6821493% of $100 000 or approximately $682.15 The principal is reduced by ($784.16 – $682.15) or $102.01 The balance at the end of the month is ($100 000 $102.01) or $99 897.99 Similarly, in the 5 th month: The interest is 0. 6821493% of the balance at the end of the 4 th month: (0.006 961 062 x $99 691.86) or $680.05 The principal is reduced by ($784.16 – $680.05) or $104.11 The balance at the end of the month is ($99 691.86 $104.11) or $99 587.75 Each year, the interest payments decrease, and the principal payments increase. The mortgage is paid off at the end of 25 years or 300 payments. Questions: 1. a) For payment #1, the interest paid is $ and the principal paid is $ b) Which value is deducted from the balance owing? 2. Each monthly payment is $ so after the first 6 months of payments, the total amount actually paid for the home has been (R x n) The balance, however, has gone from an initial amount of $100 000 to $ at the end of the 6th payment, which is a decrease of Why is there such a difference in the amount actually paid and the reduction of the principal? 3. Even in the latter part of the amortization table, the monthly payment is still $ , so over six months the total amount actually paid for the home is still $ . a) How much has the balance decreased from payment #283 to payment #288? b) Why is the balance decrease here, different from the balance decrease determined in question #2? 4. Recall that interest is found using I = (R x n) – PV. Calculate the interest Rita paid on her mortgage. . 5. The graph below shows the monthly interest payments and payments against the principal for Rita’s mortgage. Use the graph to explain what is happening at the point where the two graphs intersect. 6. This next graph shows the balance of the mortgage in the spreadsheet for Rita’s mortgage. Use the graph to answer the following questions. a) What is the balance after each time? i) 5 years ii) 10 years iii) 15 years iv) 20 years b) How long does it take until onehalf of the principal has been paid? Years 7. Amortization Tables and Spreadsheets. You want to purchase a car that costs $15 000 and you have a down payment of $5000. Suppose you borrow $10 000 to buy a car at an interest rate of 6% per annum, compounded monthly, and agree to pay back the loan with equal payments at one month intervals over one year. You want to have a record of the monthly payments and the principal that has been paid, as well as the outstanding balance at any time during the year. The monthly payments work out to be $860.66. Complete the following table.

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2 ­ Amortization Table Apr 22.notebook April 24, 2015AMORTIZATION TABLES

An amortization table or schedule shows• The regular blended payment• The portion of each payment that is interest• The portion of each payment that is principal• The outstanding balance after each payment

Amortization tables are usually in the form of a spreadsheet.

Sample:Rita buys a $120 000 home. She has a down payment of $20 000.  She needs a mortgage of $100 000.The bank offers Rita a 25­year mortgage at 8.5%.

The payments for this mortgage are displayed in the spreadsheet on the next page.The spreadsheet shows the first 18 payments and the last 18 payments.

Interpreting the amortization table:

Part of each payment is interest and the rest reduces the principal.For example, in the first month:

• The interest is 0.6821493% of $100 000 or approximately $682.15• The principal is reduced by ($784.16 – $682.15) or $102.01• The balance at the end of the month is ($100 000 ­ $102.01) or $99 897.99

Similarly, in the 5th month:• The interest is 0. 6821493% of the balance at the end of the 4th month:

(0.006 961 062 x $99 691.86) or $680.05• The principal is reduced by ($784.16 – $680.05) or $104.11• The balance at the end of the month is ($99 691.86 ­ $104.11) or $99 587.75

Each year, the interest payments decrease, and the principal payments increase.

The mortgage is paid off at the end of 25 years or 300 payments.

Questions:

1. a) For payment #1, the interest paid is $   

and the principal paid is $ 

b) Which value is deducted from the balance owing?

2. Each monthly payment is $  so after the first 6 months of 

payments, the total amount actually paid for the home has been (R x n)

 

The balance, however, has gone from an initial amount of $100 000 to

 $   at the end of the 6th payment, which is a decrease of

 

Why is there such a difference in the amount actually paid and the reduction of the principal?  

3. Even in the latter part of the amortization table, the monthly payment is still

$  , so over six months the total amount actually paid for the

 home is still $    .

a) How much has the balance decreased from payment #283 to payment 

#288?  

b) Why is the balance decrease here, different from the balance decrease determined in question #2?

4. Recall that interest is found using I = (R x n) – PV. Calculate the interest Rita paid on her mortgage.

.

5. The graph below shows the monthly interest payments and payments against the principal for Rita’s mortgage. Use the graph to explain what is happening at the point where the two graphs intersect.

6. This next graph shows the balance of the mortgage in the spreadsheet for Rita’s mortgage. Use the graph to answer the following questions.

a) What is the balance after each time?

i) 5 years

ii) 10 years

iii) 15 years

iv) 20 years

b) How long does it take until one­half of the principal has been paid?

Years

7. Amortization Tables and Spreadsheets.You want to purchase a car that costs $15 000 and you have a down payment of $5000.  Suppose you borrow $10 000 to buy a car at an interest rate of 6% per annum, compounded monthly, and agree to pay back the loan with equal payments at one month intervals over one year. You want to have a record of the monthly payments and the principal that has been paid, as well as the outstanding balance at any time during the year. The monthly payments work out to be $860.66. Complete the following table.