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May  4, 2021


An Economic Perspective on Wealth Taxes


The idea of imposing a tax on individual wealth has
appeared in policy debates with increasing frequency.
Proponents of a wealth taxhave primarily argued that such
a taxwould achieve three objectives. First, a wealth tax
would mitigate rising wealth inequality. Second, the tax
would raise significant revenue that couldbe used to
address debt and deficit concerns, and fund a variety of
socialpolicies. Finally, the taxcould capture some income
sources that currently are not taxed (e.g., unrealized capital
gains or types of imputed income).

This In Focus presents an economic perspective on wealth
taxes. Because no federal wealth taxcurrently exists,the
discussion in this In Focus is primarily in terms of a
generalwealth tax. Designing such a taxwould require
careful consideration about a number ofspecific issues.
Where  appropriate, the discussionhighlights specific points
of consideration.

Overview
At its most basic level, wealth is the value of allas sets (e.g.,
stocks, bonds, realestate, art) owned by an individual
minus the value of their liabilities. As shownin Figure 1,
the concentration of wealth in the top 10% (i.e., top 1% plus
next 9%) of the wealth distribution in the United States has
increased over the past 30years. The increasehas been
largest for the wealthiest households. The share owned by
the top 1% rose by the greatest amount, from23.4% in the
third quarter of 1989 to 31.4% in the fourth quarter of 2020.
Over the same time period, the holdings of the top 1% of
the wealth distribution have shifted toward stocks and
businessholdings.

Figure l. Share of Total Wealth by Wealth Percentile
Group  in the United States, 1989 to 2020

   %of totaI wealth

         s~)             50% 90%






                   9293





Source: Board of Governors of the Federal Reserve System.
Notes: Quarterly data from Q3 1 989 to Q4 2020.


Potential Policy Issues
Enactment of a wealth taxwould represent a significant
change in U.S. taxpolicy. The change would raise a
number ofpolicy issues and questions that Congress may
choose to address.

Revenue   Yield
The Joint Committee on Taxation (JCT) would provide
Congres s with an officialrevenue estimate of any wealth
taxproposal. A number of outside think-tank and academic
researchers have proposed revenue estimates of wealth
taxes, which vary depending on the assumed design of the
tax.

For example, the Tax Policy Center (TPC) examined three
stylized wealth taxes:

    1.  a tax equal to 1% ofnet wealth over $20
        million ($40 million forjoint filers);
    2.  a tax equal to 1% ofnet wealth between
        $20 million and $100 million ($40
        million and $200 million forjoint filers)
        and 2% ofnet wealth over $100 million;
        and
    3.  a tax equal to 1% ofnet wealth between
        $100 million and $1 billion and 2% ofnet
        wealth over $1 billion.

The TPC  estimates these three versions would raise $1.1
trillion, $1.6 trillion, and $800 billion in revenues,
respectively, in the first 10 years, though they emphasize
revenue estimates are highly uncertain.

The uncertainty surrounding wealth taxrevenue estimates is
illustrated by the broad range ofestimates of a legislative
proposalby Senator Warren (5.510). The proposal would
levy a 2% tax on net wealth above $50million plus an
additional 1% taxon wealth over $1 billion. Annual
estimates for this proposalrange from$117 billion (Smith,
Zidar, and Zwick) to $275 billion (Saez and Zucman).
Authors of these estimates have noted the difficulty in
determining the magnitude of behavioral responses and
avoidance behavior that would occur if the proposal were
enacted.

Valuation
Determining the value of assets is a crucial aspectof
implementing a wealth tax. Valuations ofbank accounts
and as sets that are readily traded on financial markets, such
as stocks and bonds, would berelatively straightforward,
although when suchv aluations were made would be
important given fluctuations in asset values overtime.


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