110 likes | 268 Views
Last Updated: 26 Oct.,20 0 6 Lecture Notes ECON 622: ECONOMIC COST-BENEFIT ANALYSIS Lecture 6. MEASUREMENT OF ECONOMIC PRICES OF NON-TRADABLE GOODS. Non-Tradable Commodities. A good or service is considered non-tradable when its domestic price is determined by local demand and supply.
E N D
Last Updated:26Oct.,2006 Lecture Notes ECON 622: ECONOMIC COST-BENEFIT ANALYSIS Lecture 6
Non-Tradable Commodities • A good or service is considered non-tradable when its domestic price is determined by local demand and supply. • An increase in demand (or supply) by a project could affect the amounts demanded by domestic consumers (or produced by other suppliers).
Price Domestic Supply S Distorted World Supply Price Em* PCIF* (1+Tm) + Fm Pm Distorted World Demand Price Em* PFOB* (1-tx) - Fx D Domestic Demand Quantity per year Defining a Price of Non-Traded Good or Service • Goods and services whose domestic production satisfies all the domestic demand for these items and whose domestic prices are not affected by their world prices are referred to as non-traded goods. Domestic price
Steps to Estimate the Economic Value of a Non-Tradable Good or Service • Adjust for distortions in the market for the item (whether input to, or output of, the project). • Adjustment for Distortions in other markets. Because of General Equilibrium Effects.
Value of Resources Saved Value of Increased Consumption Step One: Adjusting for Distortions in the Market for Good or Service Non-Tradable Goods Economic Benefits of Project Output (No Distortions) Price S0 A S0 + Project C P0m E G F P1m B D D0 s1 Q Q0 QT d1 Quantity Q Economic Value = WxsPs+WxdPd If no output market distortions, then: Ps = Pd = Pm
Calculating the Economic Value of Non-Tradable Goods Economic Value = Wxs P s + Wxd P d =weighted average of supply (Ps) and demand (Pd) price Where: Ws + Wd = 1 Weights expressed in terms of elasticities: Supply Elasticity Wxs = = Supply Elasticity - Demand Elasticity - Demand Elasticity - Wxd = = Supply Elasticity - Demand Elasticity - Wxs = - Wxd P s = Supply Price = (defined positively)own price elasticity of supply P d = Demand Price = (defined negatively) own price elasticity of demand
Calculating the Economic Value of Non-Tradable Goods Classification of Goods and Weights on Demand and Supply Prices • If rationing then Ws=0 and Wd=1 • Traded: Importable Ws = 1 and Wd = 0 Exportable Ws = 0 and Wd = 1 • Non-traded Ws > 0 and Wd > 0 Three classes of goods:WsWd (S more responsive than D) 2/3 1/3 (Equally responsive) 1/2 1/2 (S less responsive than D) 1/3 2/3
Value of Resources Saved Value of Increased Consumption Non-Tradable Goods Economic Benefits of Project Output (Tax on Output) Price S0 A d0 m0 S0 + Project P P = (1+ts) N F d1 m1 P = P (1+ts) G s0 m0 E P = P J s1 m1 P = P H B D0 D D0 Net of Tax Quantity s1 d/s0 d1 Q Q Q Economic Benefits Wxs P mx0 + Wxd P mx0 (1+ t s ) Example Wx s =1/3, Wx d=2/3 Pm=120, t s =0.15 Pe=1/3(120)+2/3(120)(1+0.15)=132 Pe=40+80(1.15)=132
Price S0 S After subsidy 0 s0 m0 P = P / (1-k) H A S After Subsidy 0+Project s1 m1 P = P / (1-k) F d0 m0 E I P = P J d1 = m1 P P G B C D D0 Quantity Q s1 Q d/s0 Q d1 Economic Benefits P mx0 Wxs Value of Resources Saved Value of Increased Consumption + Wxd P mx0 (1-k) Example Wx s =1/3, Wx d=2/3 Pm=90, k=0.40 Pe=1/3*(90/(1-0.4))+2/3*(90) Pe=1/3(150)+2/3(90)=110 Non-Tradable Goods Economic Benefits of Project Output (other producers subsidized)
Price S0 H s1 m1 P = P / (1-k) C After Subsidy 0 G S s0 m0 P = P / (1-k) B D I E d1 m1 P = P F J d0 = m0 P P Value of Additional Resources A D0+Project D0 Quantity Value of Postponed Consumption d1 d/s0 s 1 Q Q Q Economic Costs P mx0 Wxs + Wxd P mx0 (1-k) Example Wxs =1/3, Wxd=2/3 Pm=90, k=0.40 Pe=1/3(90/(1-0.4))+2/3(90) ; Pe=1/3(150)+2/3(90)=110 Non-Tradable Goods Economic Costs of Project Input (Input production subsidized)