Tourism CGE Modeling
Also known as: Tourism Computable General Equilibrium, CGE Tourism Impact Model, General Equilibrium Tourism Analysis, Tourism Economy-Wide Modeling
Tourism computable general equilibrium (CGE) modeling simulates how a change in tourism — a surge in inbound visitors, a major event, a new tax, or a demand collapse — ripples through an entire economy when prices, wages, exchange rates, and resources are free to adjust. Unlike input-output analysis, which assumes fixed prices and unlimited supply, a CGE model represents producers, households, government, and the rest of the world as optimising agents linked through markets that must clear. A tourism shock therefore bids up the prices of the resources tourism uses, draws labour and capital away from other sectors, and shifts the exchange rate, so the net economy-wide effect can differ sharply from a naive multiplier. Dwyer, Forsyth and Spurr's 2004 comparison made the influential case that CGE is the preferred technique for evaluating tourism's economic effects when these adjustments matter.
Key highlights
- Accounts for resource constraints and crowding-out, so it captures tourism's true net effect on the wider economy.
- Lets prices, wages, and the exchange rate adjust, representing channels that fixed-coefficient models ignore.
- Handles complex policy experiments — taxes, subsidies, investment, demand shocks — within one consistent economy-wide framework.
- Provides welfare measures (equivalent and compensating variation) alongside GDP and sectoral results.
Intuition
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How it works
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When to use it
Use tourism CGE modeling when a tourism shock is large enough, or the economy close enough to its resource limits, that prices, wages, the exchange rate, and inter-sectoral competition for labour and capital will respond — situations where fixed-price input-output and multiplier models would mislead. It is the right tool for evaluating major events, large changes in inbound demand, tourism taxes and subsidies, exchange-rate effects, and any policy where crowding-out of other sectors is a genuine concern, exactly the case Dwyer, Forsyth and Spurr make. It is less appropriate for small, local impact questions where supply is plausibly slack and a transparent input-output analysis suffices, for data-poor settings that cannot support a credible social accounting matrix and elasticity set, or when stakeholders need a simple, auditable figure rather than a model whose results depend on contestable behavioural assumptions.
Strengths & limitations
- Accounts for resource constraints and crowding-out, so it captures tourism's true net effect on the wider economy.
- Lets prices, wages, and the exchange rate adjust, representing channels that fixed-coefficient models ignore.
- Handles complex policy experiments — taxes, subsidies, investment, demand shocks — within one consistent economy-wide framework.
- Provides welfare measures (equivalent and compensating variation) alongside GDP and sectoral results.
- Results hinge on behavioural elasticities and closure assumptions that are hard to estimate and contestable.
- Requires a detailed, balanced social accounting matrix that is data-intensive and costly to build.
- The model is complex and opaque, making results difficult for non-specialists to scrutinise and replicate.
- Standard CGE models are often comparative-static and assume optimising, market-clearing behaviour that may not hold in the short run.
Common pitfalls
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Applications
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Frequently asked
How is CGE modeling different from input-output analysis for tourism?
Input-output analysis assumes fixed prices and unlimited supply, so any tourism demand becomes net gain propagated along supply chains. A CGE model instead lets prices, wages, and the exchange rate adjust and forces sectors to compete for scarce labour and capital. As a result it captures crowding-out — the activity tourism draws away from other industries — which Dwyer, Forsyth and Spurr argue makes its net impact estimates more realistic, usually smaller, and sometimes qualitatively different from input-output figures.
Why do CGE models often show smaller tourism benefits than multipliers?
Because they recognise scarcity. When an economy is near full employment, the labour, capital, and materials that expanding tourism consumes must come from somewhere, so other sectors contract and an appreciating exchange rate can hurt other exporters. Netting out this crowding-out leaves a smaller net gain than a multiplier, which implicitly assumes idle resources, would report. This corrective is the central reason Dwyer, Forsyth and Spurr advocated CGE for tourism evaluation.
What is a social accounting matrix and why does CGE need one?
A social accounting matrix is a balanced, economy-wide ledger of all transactions among sectors, factors of production, households, government, and the rest of the world in a base year. Because every expenditure is also someone's income, its rows and columns balance, and the CGE model is calibrated to reproduce it exactly as a benchmark equilibrium. It is essential because, unlike an input-output table, it closes the income-expenditure loop through households and government, enabling the model to represent the resource competition that defines general equilibrium.
Sources
- 1.Dwyer, L., Forsyth, P., & Spurr, R. (2004). Evaluating tourism's economic effects: new and old approaches. Tourism Management, 25(3), 307-317.
- 2.Fletcher, J. E. (1989). Input-output analysis and tourism impact studies. Annals of Tourism Research, 16(4), 514-529.
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Cite this page
ScholarGate. (2026, June 23). Tourism CGE Modeling. ScholarGate. https://scholargate.app/tourism-economics/tourism-cge-modeling