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COPYRIGHT © 2003 by South-Western, a division of Thomson Learning. Thomson LearningTM is a trademark used herein under license. ALL RIGHTS RESERVED. No part of this work covered by the copyright hereon may be reproduced or used in any form or by any means–graphic, electronic, or mechanical, including photocopying, recording, taping, Web distribution or information storage and retrieval systems–without the written permission of the publisher. For permission to use material from this text or product, contact us by Tel (800) 730-2214 Fax (800) 730-2215 http://www.thomsonrights.com
Contemporary Mathematics
for Business and Consumers
Third Edition
By: Robert A. Brechner
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Chapter 13Consumer and Business Credit
Copyright © 2003 by South-Western
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Chapter 13, Consumer and Business Credit
Section I Open – End Credit – Change Accounts, Credit Cards, and Lines of Credit13-1 Calculating finance charge and new balance by the unpaid or previous month’s balance method.13-2 Calculating finance charge and new balance using the average daily balance method.13-3 Calculating the finance charge and new balance of business and personal lines of credit.
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Chapter 13, Consumer and Business Credit (Cont.)
Section II Closed – End Credit Installment Loans13-4 Calculating the total deferred payment price and the amount of the finance charge of an installment loan.13-5 Calculating the amount of the regular monthly payments of an installment loan by formula.13-6 Calculating the annual percentage rate of an installment loan by APR tables and by formula.
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Chapter 13, Consumer and Business Credit (Cont.)
Section II Closed – End Credit Installment Loans13-7 Calculating the finance charge and monthly installment loan by using the APR tables installment loan.13-8 Calculating the finance charge rebate and the amount of the payoff when a loan is paid off early by using the sum – of – years – digits method.
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Section I, Open – End Credit – Charge Accounts, Credit Cards, and Lines of Credit
Revolving Credit
Interest = Principal x Rate x Time
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13-1 Calculating Finance Charge and ?New Balance by the Unpaid or Previous Month’s Balance Method
Steps to Calculate the Finance Charge and new Balance by Using the Unpaid balance Method:Step 1. Divide the annual percentage rate by 12 to find the monthly or periodic interest rate. (Round to the nearest hundredth percent when necessary.
Step 2. Calculate the finance charge by multiplying the previous month’s balance by the periodic interest rate from Step 1.
Periodic rate = Annual percentage rate
12
Finance charge = Previous month’s balance x Periodic rate
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13-1 Calculating Finance Charge and New Balance by the Unpaid or Previous Month’s Balance Method (Cont.)
Steps to Calculate the Finance Charge and new Balance by Using the Unpaid balance Method:
Step 3. Total all the purchases and cash advances for the month.Step 4. Total all the payments and credits for the month.Step 5. Use the following formula to determine the new balance:
New Balance = Previous balance + Finance Charge + Purchases and Cash advances - Payments
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13-2 Calculating Finance Charge and New Balance by Using the Average Daily Balance Method
Steps to Calculate the Finance Charge and New Balance by Using the Average Daily Balance Method:
Step 1. Starting with the previous month’s balance s the first unpaid balance, multiply each by the number of days that the balance existed, until the next account transaction.Step 2. At the end of the billing cycle, find the sum of all the daily balance figures.Step 3. Find the average daily balance using the formula
Average daily balance = Sum of daily balance
Days in billing cycle
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13-2 Calculating Finance Charge and New Balance by Using the Average Daily Balance Method (Cont.)
Steps to Calculate the Finance Charge and New Balance by Using the Average Daily Balance Method:
Step 4. Calculate the finance charge by
Step 5. Compute the new balance as before, using
New balance = Previous balance + finance charge + Purchases and cash advances - Payments
Finance Charge = Average daily balance x Periodic rate
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Everybody’s Business
“New Balance” can be calculated by adding the finance charge to the last “Unpaid Balance” of the month.
$427.28 + $3.89 = $431.37
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Section II, Closed – End Credit – Installment Loans
13-4 Calculating the Total Deferred Payment Price and the Amount of the Finance Charge of an Installment Loan
Amount Financed = Purchase price – Down payment
Down payment = Purchase price x Down payment percent
Total amount of installment payments = Amount financed + finance charges
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Section II, Closed – End Credit – Installment Loans (Cont.)
13-4 Calculating the Total Deferred Payment Price and the Amount of the Finance Charge of an Installment Loan
Finance charge = Total amount of installment payments – Amount financed
Total amount of Installment payment = Monthly payment amount x Number of Monthly payment
Total deferred payment price = Total of installment payments + Down payment
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13-5 Calculating the Amount of Regular Monthly Payments of an Installment Loan by adding the Add-on Interest Method
Steps to Calculate the Monthly Payment Using the Add-On Interest:Step 1. Calculate the amount to be financed by subtracting the down payment from the purchase price.
Step 2. Compute the add-on interest charge by using I = PRT.Amount financed = Purchase price (100%) – Down payment percent)
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13-5 Calculating the Amount of Regular Monthly Payments of an Installment Loan by adding the Add-on Interest Method (Cont.)
Steps to Calculate the Monthly Payment Using the Add-On Interest:Step 3. Find the Total of installment payments by adding the finance charge to the amount financed.
Step 4. Find the regular payments by dividing the total of installment payments by the number of months of the loan.
Total of installments payments = Amount financed + finance charges
Regular monthly payments = Total of installment payments
Number of months of the loan
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Everybody’s Business
As with open-end credit, installment loan consumers are protected by Regulation Z of the Truth in Leading Act.
Advertisers of installment loans such as car dealers and furniture stores, must disclose in the ad and the loan agreement the following information:
Down payment Annual percentage rate
Terms and payments Total payback
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13-6 Calculating the Annual Percentage Rate of an Installment Loan by APR Tables and by Formula
Steps to Find the Annual Percentage Rate of an Installment Loan Using APR TablesStep 1. Calculate the finance charge per $100 by
Step 2. From the Table 13-1, scan down the Number of Payments column to the number of payments for the loan in question.Step 3. Scan to the right in that Number of Payments row to the table that most closely corresponds to the finance charge per $100 calculated in Step 1. Step 4. Look to the top of the column containing the finance charge per $100 to find the APR of the loan.
Finance charge per $100 = Finance charge x 100
Amount financed
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13-7 Calculating the Finance Charge and Monthly Payment of an Installment Loan by Using the APR Tables
Steps to Find the Finance Charge and Monthly Payment of an Installment Loan by Using the APR TablesStep 1. Using the APR and the number of payments of the loan, locate the table factor at the intersection of the APR column and the number of payments row. This factor represents the finance charge per $100 financed.
Step 2. The total finance charge of the loan can be found by
Step 3. The monthly payment can now be found by
Finance charge = Amount financed x Table factor
100
Monthly payment = Amount financed + finance charge
Number of Months of the Loan
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Chapter 13, Consumer and Business Credit
Open – end credit Finance charge
Annual percentage rate (APR Unsecured loan
Secured loan Revolving credit
Billing cycle Average daily balance
Line if credit Prime rate
Install loan Mortgage
Down payment Cash or purchase price
Amount financed Add-on interest
Finance charge rebate Rule of 78
Rebate fraction
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Annual percentage rate 12
Finance charge = Previous month’s balance x Periodic rate
Sum of daily balances Days in billing cycle
Finance charge = Average daily balance x Periodic rate
New Previous Finance Purchases and Paymentsbalance balance charge cash advances & credits= + + =
Copyright © 2003 by South-Western
Periodic rate =
Average daily balance =
Chapter 13
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Copyright © 2003 by South-Western
Chapter 13
Amount financed = Purchase price - Down payment
Down payment = Purchase price x Down payment percent
Amount = Purchase price(100% - Down payment %)financed
Total amount of = Amount financed + Finance chargeinstallment payments
Finance charge = Total amount of - Amount financed installment payments
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Copyright © 2003 by South-Western
Chapter 13
Total amount of = Monthly payment x Number of installment payments amount monthly payments
Total deferred pmt. Price = Total of install pmts. + Downpmt.
Interest = Principal x Rate x Time(finance charge) (amount financed)
Regular monthly payments = Total of installment payments Number of months of loan
)1()1(3
72APR
nInP
I
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Copyright © 2003 by South-Western
Chapter 13
Amount financed x APR table factor 100
n(n + 1) 2
Sum of digits of remaining payments Sum of digits of total payments
Finance charge rebate = Rebate fraction x Total finance charge
Loan payoff = (Payments remaining x Pmt amount) - Finance charge rebate
Finance charge =
Sum of digits =
Rebate fraction =