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Financial vs economic analysis; both BCR

Short answer

Financial analysis uses market prices and owner viewpoint; economic analysis uses shadow prices and society viewpoint, including externalities. With MARR=10%, 6-year life, conventional B/C=1.12, modified B/C=1.15 (both >1, acceptable).

What is the difference between financial and economic analysis? Determine both types of B/C ratio from the following cash flow. Initial investment = 3,00,000 Annual revenue = 85,000 Annual costs = 15,000 Salvage value = 20% of initial investment Useful life = 6 years MARR = 10%

Financial vs economic analysis

BasisFinancial analysisEconomic analysis
ViewpointOwner / investor / firmSociety / nation as a whole
MeasuresCash revenues and costs actually paid or receivedAll benefits and costs to society, even if not paid in cash
PricesMarket pricesShadow (economic) prices
Taxes, subsidiesIncluded as real cash flowsTreated as transfers and excluded
ExternalitiesIgnoredIncluded (pollution, employment, foreign exchange)
Interest rateCompany MARR / cost of capitalSocial discount rate
AimProfit and financial viabilityNet contribution to national welfare

Numerical (PW formulation, i = 10%, n = 6)

  • Salvage S = 20% × 3,00,000 = Rs 60,000
  • Factors: (P/A, 10%, 6) = 4.3553; (P/F, 10%, 6) = 0.5645
 yr 0: -3,00,000     yr 1..6: +85,000 revenue, -15,000 cost     yr 6: +60,000
  • PW(B) = 85,000 × 4.3553 = Rs 370,197
  • PW(C: O&M) = 15,000 × 4.3553 = Rs 65,329
  • PW(S) = 60,000 × 0.5645 = Rs 33,868

Conventional B/C = PW(B) / [I + PW(C) − PW(S)] = 370,197 / (3,00,000 + 65,329 − 33,868) = 370,197 / 331,460 = 1.117

Modified B/C = [PW(B) − PW(C)] / [I − PW(S)] = (370,197 − 65,329) / (3,00,000 − 33,868) = 304,868 / 266,132 = 1.146

Answer: conventional B/C = 1.12 and modified B/C = 1.15. Both are greater than 1, so the project is acceptable.

✓ Answer checked by Claude Opus 5.5 (high effort)

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