TY  - JOUR
AU  - Chia,Ngee-Choon
AU  - Tsui,Albert K C
AU  - Whalley,John
TI  - Ownership and Use Taxes as Congestion Correcting Instruments
JF  - National Bureau of Economic Research Working Paper Series
VL  - No. 8278
PY  - 2001
Y2  - May 2001
UR  - http://www.nber.org/papers/w8278
L1  - http://www.nber.org/papers/w8278.pdf
N1  - Author contact info:
John Whalley
Department of Economics
Social Science Centre
University of Western Ontario
London, ON N6A 5C2
CANADA
Tel: 519/661-3509
Fax: 519/661-3666
E-Mail: jwhalley@uwo.ca
AB  - In countries, such as Singapore, that have implemented vehicle congestion policies, recent years have seen a shift towards motor vehicle taxes based on car use. Ownership taxes reduce the number of cars on the road, leaving the price per trip largely unaffected. Use taxes such as fuel taxes and road use charges decrease the price of trips without necessarily penalising vehicle ownership per se. This paper presents a simple general equilibrium model involving trips from residential areas to a central business district, along with modal choice between cars and public transit. Car trips involve fixed costs but have lower variable costs per trip (including convenience costs) then bus trips. Using a calibrated numerical model, we investigate the relative merits of ownership and use taxes. We compare full internalisation of congestion externalities to optimal tax outcomes for the different tax types. In our framework, use taxes restore Pareto optimality since congestion damage rises with more trips. Ownership taxes only partially internalise congestion externalities. However, in terms of revenue-raising ability, the marginal excess burdens of ownership taxes in the neighbourhood of optimal taxes are typically lower than use taxes. This is because marginal increases in ownership taxes take away part of the surplus accruing to consumers who still choose to travel by car, and thus have less distortion at the margin.
ER  -