How Fast Do Personal Computers Depreciate? Concepts and New Estimates
This paper provides new estimates of depreciation rates for personal computers using an extensive database of prices of used PCs. Our results show that PCs lose roughly half their remaining value, on average, with each additional year of use. We decompose that decline into age-related depreciation and a revaluation effect, where the latter effect is driven by the steep ongoing drop in the constant-quality prices of newly-introduced PCs. Our results are directly applicable for measuring the depreciation of PCs in the National Income and Product Accounts (NIPAs) and were incorporated into the December 2003 comprehensive NIPA revision. Regarding tax policy, our estimates suggest that the current tax depreciation schedule for PCs closely tracks the actual loss of value in a zero-inflation environment. However, because the tax code is not indexed for inflation, the tax allowances would be too small in present value for inflation rates above the very low level now prevailing.
|Date of creation:||May 2004|
|Date of revision:|
|Publication status:||published as How Fast do Personal Computers Depreciate? Concepts and New Estimates , Mark E. Doms, Wendy F. Dunn, Stephen D. Oliner, Daniel E. Sichel. in Tax Policy and the Economy, Volume 18 , Poterba. 2004|
|Contact details of provider:|| Postal: National Bureau of Economic Research, 1050 Massachusetts Avenue Cambridge, MA 02138, U.S.A.|
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- Auerbach, Alan J., 1982.
"Tax neutrality and the social discount rate : A suggested framework,"
Journal of Public Economics,
Elsevier, vol. 17(3), pages 355-372, April.
- Alan J. Auerbach, 1980. "Tax Neutrality and the Social Discount Rate: A Suggested Framework," NBER Working Papers 0457, National Bureau of Economic Research, Inc.
- Jorgenson, D.W., 1994.
"Empirical Studies of Depriciation,"
Harvard Institute of Economic Research Working Papers
1704, Harvard - Institute of Economic Research.
- George A. Akerlof, 1970. "The Market for "Lemons": Quality Uncertainty and the Market Mechanism," The Quarterly Journal of Economics, Oxford University Press, vol. 84(3), pages 488-500.
- Jane G. Gravelle, 1994. "The Economic Effects of Taxing Capital Income," MIT Press Books, The MIT Press, edition 1, volume 1, number 0262071584.
- Ernst R. Berndt & Neal J. Rappaport, 2001. "Price and Quality of Desktop and Mobile Personal Computers: A Quarter-Century Historical Overview," American Economic Review, American Economic Association, vol. 91(2), pages 268-273, May.
- Dale W. Jorgenson, 1995. "Productivity, Volume 1: Postwar US Economic Growth," MIT Press Books, The MIT Press, edition 1, volume 1, number 0262100495.
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