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JAIIB/DBF Accounting & Finance for Bankers. MODULE-A Basics of BUSINESS MATHEMATICS. Why Mathematics in Banking. To calculate interest on deposits and advances To calculate yield on bonds in which banks have to invest substantial amount.
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JAIIB/DBF Accounting & Finance for Bankers MODULE-A Basics of BUSINESS MATHEMATICS
Why Mathematics in Banking • To calculate interest on deposits and advances • To calculate yield on bonds in which banks have to invest substantial amount. • To calculate depreciation • To decide on buying/selling rates of foreign currencies • To calculate minimum capital required by the bank • To appraise loan proposals
What level of maths is required • In banking, very high level of maths is not needed • We should know the following basic mathematical operations • Addition,e.g. 24+33+9+56=122 • Subtraction,e.g.138-41-72=25 • Multiplication,e.g. 1.1*1.1=(1.1)2 =1.21 • Division,e.g.1/12=0.0833 • (1+r)n is often used. It simply means that 1+r is multiplied by 1+r , n times. E.g. if r=0.1 and n=3,this is equal to 1.1*1.1*1.1 =1.331
Weightage of maths in JAIIB/DBF Exam • Constitutes one of the four modules of the paper of Accounting & Finance.Therefore, the weightage in this paper is about 25% • It is possible to get good score in questions related to this module, as only simple mathematics is involved and use of calculator is allowed
Can we cover entire syllabus in this class • We can have conceptual clarity of the entire syllabus on business maths. • You need to read the book (Accounting & Finance for Bankers Second edition 2008 ) thoroughly, and solve problems from the work book. • You may get in touch with me whenever you need any clarification • My mail id is bansalsc2006@yahoo.com
Simple interest • Important symbols ; P=amount deposited initially, called Principal • r=rate of interest. 12% per annum means that if you deposit Rs 100 for one year,you will get interest of Rs 12 at the end of the year.In our calculations,we will take r=12/100=0.12 p.a. • T=number of years for which P is deposited • I=total interest receivable. I=P*r*T • A=amount receivable.A=P+I=P+(P*r*T)=P(1+rT)
Compound interest • If you deposit Rs 100 @12%p.a.,it becomes Rs 112 at the end of one year.For next year,you should get interest on Rs112,which is 112*12/100=13.44.This is called compounding.In case of simple interest, you would have received interest of Rs 12 only for the 2nd year also. • Compounding can be yearly,as shown above, or can be monthly,quarterly,half yearly etc.More frequent compounding means more interest for you. • In yearly compounding, A=P(1+r) after 1year, P(1+r)2 after 2years,and so on.After T years, A=P(1+r)T • If compounding is n times in a year, A=P(1+r/n)nT • Rule of 72 is used to find the period in which our money doubles.
Other important terms associated with interest • Fixed and Floating interest rate; When the interest rate is fixed for the entire tenure of the loan or deposit, it is called fixed rate .When it is linked to some benchmark,and may change depending upon the market conditions, it is called floating rate. • Front ended and back ended interest rate;When loan is disbursed after deducting the amount of interest for a future period, like in bills discounting,it is called front ended. When the entire loan amount is disbursed and interest is charged after a period of time, it is back ended. • Flat rate of interest is different from interest on reducing balance. Example: interest on Rs 1000 @10%p.a. for 3years will be Rs 300 with flat rate of interest even though the loan is being repaid every month. Banks normally charge interest on reducing balance but NBFCs normally charge interest on flat basis.
Discount factor • We have seen that P becomes P(1+r)T in T years.Therefore,if somebody promises to give you Rs P(1+r)T after T years,you should know that it is worth only Rs P today. • Amount receivable in future is to be multiplied by a number(always less than one) to arrive at the present worth of that amount. • In above example,P(1+r)T is to be multiplied by 1/(1+r)T to arrive at present worth P. So ,the discount factor is 1/(1+r)T. • E.g.,if rate of intt is 10%p.a., r=0.10. Therefore, discount factor is 1/1.10 for 1 year, 1/1.21for 2 years and so on.
Present value of money • PV= Future amount* Discount Factor(DF) • DF = 1/(1+r)T • E.g.,if rate of intt is 10%p.a., r=0.10. Therefore, discount factor is 1/1.10 for 1 year, 1/(1.10)2 =1/1.21 for 2 years and so on. • In above example,PV of Rs 100 ,to be received after 2 years will be, 100*1/(1.10)2 =100/1.21=Rs 82.64.Similarly,PV of Rs 100,to be received after 5 years, will be100*1/(1.10)5
Future value of money • Depending on the rate of interest, the amount you receive in future(A), will be more than the amount(P) available now. • A=P(1+r)T ,when the compounding is yearly. • Therefore,FV=Present Amount*(1+r)T . We call (1+r)T compounding factor. • E.g.,if rate of intt is 10%p.a., r=0.10. Therefore, compounding factor is 1.10 for 1 year, (1.10)2 =1.21 for 2 years and so on. • In above example,FV of Rs 100 , after 2 years will be, 100*(1.10)2 =100*1.21=Rs 121.Similarly,FV of Rs 100, after 5 years, will be100*(1.10)5
Annuities • A series of fixed payments/receipts at a specified frequency, over a fixed period. • E.g. Payment of Rs 1000 every year by LIC for next 20 years . Also, a Recurring deposit with bank for Rs 100 for 5 years. • 2 types of Annuities. Ordinary Annuity; payment is at the end of the period. Annuity Due; payment is at the beginning of each period.
Present and Future value of Annuity • For calculating PV of Annuity, PV of each payment is calculated and added.E.g. if Rs 100 is paid at the end of each year for 10 years, we calculate pv of each of these 10 payments of Rs 100 separately and add these 10 values. • Similarly, for calculating FV of Annuity, FV of each payment is calculated and added.E.g. if Rs 100 is paid at the end of each year for 10 years, we calculate fv of each of these 10 payments of Rs 100 separately and add these 10 values.
Precaution while calculating PV and FV • In the formulae, given in the books,we have to correctly arrive at r, i.e.the interest rate.E.g.the given intt rate is 12%p.a.If the payment is received yearly, r will be equal to 12/100=0.12.But if payment is received monthly, it will be 12/100*12=0.01.For quarterly payment, it will be 0.03 and for half yearly payment, it will be 0.06
Sinking fund • Concept same as that of Annuity • Suppose, you need a fixed amount(A) after,say, 5 years.You deposit an amount(C)every year with a bank.This becomes A after 5 years and can be used for repaying a debt or any other purpose.As the rate of intt and the FV is known, we can calculate C.
Understanding Formula for EMI,Annuities(1) • Let us take case of a home loan of Rs 1lac at 12%p.a. ,repayable in 180 instalments (here p=1,00,000and r=12/100*12=.01) • In the 1st month, bank will charge interest equal to p*r=Rs 1000 and so, the outstanding amount will become Rs 1,01,000. • What happens if the EMI is fixed at p*r, which is Rs 1000?This EMI will meet only the interest applied and so the principal will remain unchanged at Rs 1,00,000.This process will continue and the loan will remain outstanding for ever. Therefore, EMI has to be slightly more than p*r so that some amount can go towards reducing the principal amount
Understanding Formula for EMI,Annuities(2) If EMI has to be more than p*r, we should multiply p*r by a fig which is more than 1. This fig is (1+r)n / (1+r)n -1.You will observe that denominator in less than numerator by 1 only. E.g., if numerator is 4.3210, the denominator will be 3.3210 .So, this fig is always more than 1. As you know, (1+r)n is an important fig in business maths, and if the above concept is clear, you will never have difficulty in remembering EMI formula
Understanding Formula for EMI,Annuities(3) • Once you are comfortable with EMI formula, you can derive yourself the formula for PV and FV of Annuities. • Home loan is like an ordinary annuity in which payment takes place at the end of each month for an amount equal to EMI,and p is like the present value of annuity.Therefore, in a question, if periodic payment ,n and r are given, you can calculate PV. FV is calculated by multiplying PV by (1+r)n. • In case of annuity due,the payments are at the beginning of the period and not at the end as is the case with ordinary annuity. Therefore, both PV and FV will be more than what is arrived in case of ordinary annuity. The multiplying factor is (1+r)
Bonds • A Bond is a form of debt raised by the issuer of the bond. • Issuer of the bonds pays interest to the purchaser for using his money. • Terms associated with bonds: Face value, Coupon rate, Maturity, Redemption value, Market value. • Face value and redemption value may be different but these are fixed and known. • Market value of the bond may be different form the face value and keeps changing.
Valuation of bonds • The purchaser of the bonds gets regular interest payments as also the redemption amount on maturity. • The interest on bond( also called coupon rate) is fixed at the time of its issue. But interest rate in the market keeps changing, and,therefore,market price of bond also changes. • The market price or intrinsic value of a bond is different from the face value if the coupon rate is different from the market interest rate at that particular time. • Market value is equal to PV of all the coupon receipts and redemption value discounted at the prevailing market rate.
Yield on bonds • Current yield =coupon interest/current market price. • E.g. if face value of a bond is Rs 50, coupon rate is 8% pa, and market price is Rs 40, then the current yield=4/40=0.1 or 10% • Yield to Maturity(YTM) is that discount rate at which all future cash flows equal the present market value.
Theorems for bond valuation • Effect of change in market interest rate • Effect of maturity period • Bond price is inversely related to YTM • Interest rate elasticity= %age change in price/%age change in YTM .This is always negative as both move in opposite direction.
Capital budgeting • Used to choose between various projects. • A capital project involves capital outflow( investment) and capital inflows(net profit) over the life of the project. • PV of all cash inflows will be +ve and PV of all cash outflows will be negative.PV will depend on the discount rate( cost of capital) • Summation of all the PVs of cash inflows and outflows is called Net Present Value(NPV) • IRR is that discount rate at which NPV of a project is zero. • Other method used for capital budgeting is pay back period method.
Depreciation • Concept of depreciation • Straight line method;(cost-residual value)/ estiamted usful life • Written Down Value method or declining balance mehtod : %age is fixed • Sum of years’ digits method; Example, if an asset is to be depreciated over five years, add digits 5,4,3,2,1 .The total is 15.For the 1st year depreciation is 5/15,for 2nd year,4/15 , and so on • AS-6 deals with Depreciation Accounting
Forex Arithmatics • Earlier RBI used to fix buying and selling rates of Forex.Now market forces decide the exchange rate. • Direct and indirect quotations.From 2-8-93 only direct quotations are being used. • Cross rate/chain rule; e.g. if 1US$=Rs 48 and 1Euro=US$1.25, then 1Euro=Rs1.25*48 • Value date: Cash/ready,TOM, Spot, Forward • Premium and discount. • Factors affecting premium/discount
Capital adequacy • Need for capital in banks. • How much capital? • Basel II norms • RBI norms
Sample questions • 1.What is the Present Value of Rs. 115,000 to be received after 1 year at 10%? • 121,000 • 100,500 • 110,000 • 104,545 • 2.At 10% p.a. 2 year discount factor is • 0.826 • 1.00 • 0.909 • 0.814 • 3.If 1 year discount is 0.8333, what is the discount rate? • 10% • 20% • 30% • 15%
Sample questions • 4.Present Value is defined as • Future cash flows discounted to the present at an appropriate discount rate • Inverse of future cash flows • Present cash flows compounded into the future • Discounting of compounded future cash flows • 5.Annuity is defined as • Equal cash flows at equal intervals forever • Equal cash flows at equal intervals for a specified period • Unequal cash flows at equal intervals for specified period • Unequal cash flows at equal intervals forever
Sample questions • 6.What is the N P V of the following at 15% • t = 0 t = 1 t = 2 -120,000 -100,000 300,000 • 19,887 • 80,000 • 26,300 • 40,000 • 7.A bond holder of a company has one of the following relationship with • It .Identify • shareholder • depositor • creditor • employee
Sample questions • 8.The yield to maturity is a rate of return which a. gives the current yield b .Is the discount rate at which the present value, of the coupons and the final payment at face value, equals the current price c .gives the return at maturity on the bond for the original holder d. b) and c) • 9.The relationship between the bond prices and interest rates is one of the • Following • direct & linear • inverse & linear • direct and curvilinear • no relationship
Sample questions • 10) What does the rate of return equal to if interest rates do not change during the pendency of the bond ? • yield to maturity • coupon rate • compounded rate • current yield 11.A Bond of face value Rs.5000 carries a coupon interest rate of 12%. It is quoted in the market at Rs.4500. What is the current yield of the bond? • 12% • 10% • 13.3% • 14.2%
Sample questions • 12.Which of the following investment rules does not use the time value of the money concept? • A.The payback period • B.Internal rate of return • C.Net present value • D.All of the above use the time value concept
Sample questions • 13.A capital equipment costing Rs200,000 today has Rs 50,000 salvage value at the end of 5 years. If the straight line depreciation method is used, what is the book value of the equipment at the end of 2 years? • Rs200,000 • Rs170,000 • Rs140,000 • Rs50,000 14.Cost of Car is Rs. 300,000, Depn. Rate is 10% on WDV. What is the book value of car after 3 years. • 210,000 • 220,00 • 214,300 • 218,700
Sample questions • 15.If P=principal, r = rate of interest , n= number of instalments • Then formula for equated monthly instalment (EMI) is (p*r)(1+r)n • (1+r)n – 1
Sample questions • 16.If the rates in Mumbai are US $1=Rs.42.850 .In London market are US $ 1=Euros 0.7580 Therefore for one Euro we will get • a) Rs.56.45 • b Rs.56.53 • c) Rs.56.38 • d) Rs.56.50
Sample questions • 17.The purchase price of an asset is Rs 45,000 and is to be depreciated over next 5 years using sum of years’ digits .What will be book value after one year? • A) Rs 30,000 • B) Rs 25,000 • C) Rs 27,500 • D) Rs 35,000 • 18. If the sales income is Rs 10 lacs, Fixed costs are Rs 5 lacs, variable costs are Rs 3 lacs, depreciation is Rs 1 lacs, and tax rate is 20%, what is cash profit after tax? • A Rs 1 lac • B Rs2 lacs • C Rs 1.80 lacs • C Rs 1.60 lacs
Sample questions • 19. A home loan with a floating rate of interest is repayable in 120 EMIs of Rs 5000 each. If the rate of interest increases, which of the following will be done by the bank, in the normal course: • The amount of EMI will become more than Rs 5000 • The amount of EMI will remain Rs 5000 but the number will be more than 120 • Both amount and number of EMIs will increase • Both amount and number of EMIs will remain same and bank will charge a one time additional amount
Sample questions • 20. Basel Committee on Banking Supervision (BCBC) was set up by— • a)United Nations • b)RBI and Central Banks of some other countries • c)G-10 countries • d)None of the above • 21. Which of the following correctly states the 3 main pillars of Basel II accord; • a)Credit Risk, Operational Risk,Market Risk • b)Minimum capital Requirement,Supervisory Review Process,Market Descipline • c)Standard Approach, Internal rating Based approach,Securitisation Framework • d)Income Recognition,Asset Classification,Provisioning
Sample questions • 22. Capital Adequacy is defined as— • a)Capital as a percentage of all risk weighted assets including non fund based and non performing assets • b) Capital as a percentage of risk weighted assets excluding non performing assets • c) Capital as a percentage of risk weighted assets excluding non fund based and non performing assets • d) Capital as a percentage of risk weighted assets excluding non fund based assets
Sample questions • 23.Which of the following is a Direct Quote: • In India : 1US $ = Rs 43.2350 • In U S A : 1Euro = US $ 1.9200 • In Germany : 1 DM = US $ 1.2450 • All the above • 24. Market quotes are: US $ 1 = Rs 42.8450/545 • Euro 1 = US $ 1.9720/40 • By selling Euro 1,00,000 , you will get ; • a) Rs 84,59,478 • b )Rs 84,50,907 • c) Rs 84,49,034 • d) None of the above
Sample questions • 25. Market quote is ; 1Euro =US $ 1.5780/90, 3 month forward: 110-105. If you have to buy Euro, the rate of 1 Euro will be— • a) US $ 1.5890 • b) US $ 1.5895 • c) US $ 1.5680 • d) None of the above • 26. If the Spot rate is Euro 1 = US $ 1.500 and the interest rate in Europe is higher by3% p.a. than that in USA, what will, theoretically , be Euro’s 90 days Forward rate, assuming 360 days in a year? • a)1.51125 • b)1.48875 • c)1.50750 • d)1.49250