fm3value
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Financial Management Series
Number 3
Using Net Present Value
To Evaluate
The Value of Money Over
Time
Alan Probst
Local Government Specialist
Local Government CenterUW-Extension
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Financial Management
Fiscal Policy
Sound financial decision-makingresults from an informed fiscalpolicy and a solid understanding ofthe value of money and the
vehicles through which it ismanaged.
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Financial Management
Financial Decisions require consideration of:
Projected revenues over the period oftime being considered
Projected operating expenditures overthe period being considered
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Financial Management
(cont.)
The governmental bodys ability to
acquire financing, now and in the future
Present and future value of money
when applied to the project beingconsidered.
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Financial Decision-Making
When making financial decisions for a
governmental body, the same rational doesntnecessarily apply as is used in managing ones
own personal finances.
What looks like a common sense good idea at first
may turn out to be a bad financial decision whenworked through the formulas
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Financial Decision-Making
Performing a Cost/Benefit Analysis is
essential to sound financial decision-making
A critical part of a Cost Benefit Analysis is
determining the value of money over time
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Time Value of Money
Moneys value changes over time
A dollar today is worth more than a dollartomorrow
When time value is considered, the cost-
effectiveness of a project can change
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Todays dollar is worth more
because: Interest rates
$100 you invest at a 4% interest rate today will be worth $104 in 1 year,
thus making todays money worth more Inflation
You purchase 20 items today at $1.00 each for $20.00
After one year, due to inflation, those same items cost $1.50 each andyou can only purchase 13.33 of that same item with our $20.00. Thus,todays money is worth more.
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Value of Money Over Time
Future Value
Measures what todays money would be worth at aspecified time in the future assuming a certaindiscount rate
Present ValueMeasures what money at a specified period of time inthe future would be worth if valued in terms of todaysmoney
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Discount Rate
The rate used in calculating the present value ofexpected yearly benefits and costs
Used to reflect the time value of money
The higher the discount rate, the lower the presentvalue of future cash flows
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Real vs Nominal
Discount Rates
A nominal discount rate that reflects
expected inflation should be used todiscount nominal benefits and costs
Market interest rates are nominal interest
rates
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Real vs. Nominal A real discount rate adjusted to eliminate the effect
of expected inflations should be used to discount
constant-dollar or real benefit benefits and costs
A real discount rate can be approximated bysubtracting expected inflation from a nominal
interest rate
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Real Discount Rate
(1+ Nominal Interest Rate) = (1 + Real
Interest Rate) * (1 + Inflation rate)
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Free Cash Flows
Free Cash Flowis a measure of cash
flow remaining after all
expenditures required to maintainthe operation
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Future VS Present Value Future Value = Present Value X (1+discountrate) raised to a power of the number of
years
Present Value= Future Value/ (1+discount
rate) raised to a power of the number of
years
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Example
Future value of 100 of todays dollars in
five years.
100 X (1.0 + .04)5 = 121.67 where .04 is the
discount rate.
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Done on Excel:
=SUM(100*(1+0.04)^5)
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Example
Present Value of 100 dollars five years in
the future.
100 / (1.0 + .04)5 = $82.19
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On Excel:
=SUM(100/(1+0.04)^5)
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Would you rather pay $15,000 now
for a years worth of your
newborns education or $30,000
eighteen years from now?
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Present value of $30,000 eighteen
years into the future + 30000
divided by (1+.04)18 = $14,809
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So why is this important?
Understanding the time value of money can
help you identify misconceptions about real
costs and benefits of projects or courses of
action
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So why is this important? Future value, present value, and discount rates are used to
determine Net Present Value
Net Present Value is a component of Cost Benefit Analysis
Net Present Valueis a criterion for deciding whether agovernment program can be justified on economic
principles.
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Net Present Value (NPV)
NPV is the future stream of benefits and costsconverted into equivalent values today
Programs with a positive NPV are generally costeffective
Programs with negative NPV are generally not cost
effective
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CalculatingNPV
Assign monetary values to benefits and costs
Discount future benefits and costs using anappropriate discount rate
Subtract the sum total of discounted costsfrom the sum total of discounted benefits
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Project Example
Project A produces $5,000 of revenue in 2006
Project B produces $5,200 of revenue in 2007
Which is the more fiscally sound project?
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Project Example
You cannot directly compare two different
years without discounting
2006 is Present Value
2007 is Future Value
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Project Example
You must find the PRESENT VALUE ofProject B in 2006 to compare
Since this is a government project, well use4.5% interest on a US Treasury Bond as theDiscount Rate
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Project Example
The PRESENT VALUE of Project B is
determined by:
$5,200 / (1+ 0.045) = $4,976
NPV = $4,976
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Project Example
After discounting, the present value of :
Project A = $5,000
Project B = $4,976
Choose Project A
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Real World Example
New County Historical Society & Museum Construction cost: $10,000,000
Visitor ticket: $15
Annual expected visitors 56,700
Expected growth of visitors 12% (for 10 year
horizon) Annual maintenance costs $10,000 w/7% growth
Annual repair expenses $5,000 w/7% growth
Discount rate 4.85% (10 yr TreasuryBond Rate)
Depreciation $285,714 w/5% growth Capital Expenditure $300,000
Inventory, etc. $5,000 w/5% growth
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Real World Example
For each year of payback of 10 year project: Projected revenuesannual maintenance and repair expenses =
Benefits
Add benefits + depreciation
Subtract capital expenditure for the year and change in working capitalto get Free Cash Flows
Free Cash Flows/(1+.0485) to the power of the year number (1-10) forPresent Value of Cash Flows (PVCF)
Total of ten years PVCF Cost of Construction = NPV
NPV this project is $249,758; generally cost effective
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Real World Example
HOWEVER, if you decrease the expected growth
rate in paying visitors from 12% to only 5% the
entire picture changes
With only a 5% expected increase, using the sameformula, our NPV result is a negative ($2,698,349),
a major loss and commonly viewed as not cost-
effective
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Summary
As local officials and decision-makers, it isonly necessary to understand the conceptsso you can make informed decisions based
on data presented to you by your financialstaff or consultants, it is not necessary to beable to perform these calculations