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[...]... earned on the project itself With distortionary taxes the two rates of return can differ The size ofthe tax wedge depends upon the system of corporate taxation, the interaction of these taxes with inflation, the tax treatment of depreciation and inventories, the personal tax code, the treatment of diffe.rent legal forms ofincome (capital gains versus dividends, for example), the existence of wealth... net of tax return he would receive from lending at the market interest rate? This minimum pretax rate of return is called the cost ofcapital It depends upon the asset and industry composition ofthe investment, the form of finance used for the project, and the saver who is providing the funds For a given combination of these factors, we may express the relation between the cost ofcapital and the. .. by the different tax systems, and for this we need a theoretical framework The second type of international comparison usually consists of descriptions ofthe tax code in different countries as it affects particular assets or types ofincome For example, there are studies ofthe differences in the tax treatment of dividends, ofcapital transfers, and ofcapital gains Some of these studies have been the. .. glossary of notation is provided at the beginning ofthe book The work ofthe project fell into three parts First, there was the development ofthe conceptual framework Second, there was the collection of data on a comparable basis for the computation of effective marginal tax rates Finally these rates were estimated using a common computer program The bulk ofthe time was taken up in producing estimates of. .. both the "fixed-p" and the "fixed-r" cases A hypothetical project is defined in terms of a particular combination of characteristics that affect the tax levied on the returns fromthe project The characteristics we examine include the asset in which the funds are invested, the industry ofthe project, the way the project is financed, and the ultimate recipient or owner ofthe returns Each hypothetical... given by ClkPk, the additional pretax profits that result fromthe marginal increment to thecapital stock If both combinations are to earn the same r, then the taxed combination must have a higher share ofthe additional pretax profits than of thecapital stock The choice between the fixed-p and the fixed-r distributions of marginal tax rates depends upon whether we are more interested in the tax schedule... bring together the different aspects ofthe tax code, it also allows us to compute the quantitative significance ofthe tax system as a whole The size ofthe marginal tax rate levied on investment depends upon the way the project is financed and the identity of the supplier of finance We have attempted to compute distributions of marginal tax rates using as weights the proportions of net capital stock... rate and the return to the saver depends on the tax treatment of personal income In none ofthe four countries studied here is the personal tax base defined as real incomefromcapital Rather, tax is charged on receipt of nominal interest income Hence the posttax real rate of return to the saver is given by (2.6) s = (1 - m)(r + 11) - 11 - wp ' 11 The Measurement of Effective Tax Rates where m is the marginal... failure of most ofthe developed economies to sustain high growth rates has led to an increased awareness ofthe lessons we may learn from each other Is it true, for example, that countries with the highest rates of productivity growth have the lowest tax rates on capital income? The aim ofthe research described in this book is to compare the effective tax rates levied on capitalincome in the nonfinancial... which the funds are invested, the nature ofthe financial claims on the profits (equity ve.rsus debt), and the ultimate recipient of thecapital income To investigate the distribution of effective tax rates within each country, we consider a series of hypothetical projects, where each project corresponds to a particular combination of asset, industry, financial instrument, and owner The first set of calculations . particular
assets
or
types
of
income.
For
example,
there
are
studies
of
the differ-
ences
in
the
tax
treatment
of
dividends,
of
capital transfers,
and
of
capital
gains.
Some
of
these
studies. King,
and
P.
Penneck
of
the
Inland
Revenue,
from R.
I.
Armitage
of
the
Central
Statistical Office,
and
from J. S. Flemming
and
J.
Ryding
of
the
Bank
of
England.
The
chapter
on
Sweden
was