By Vincent Geloso.
"The period from 1870 to 1910, which
includes the Gilded Age and Progressive era, is depicted everywhere as
one where there was rapid economic growth. This growth is commonly seen as rapidly and unevenly distributed with the poorest 90% enjoying far fewer improvements.
This popular conception is probably
wrong because of the way we are using the existing data on inequality.
In fact, inequality between the top 10% and bottom 90% of the income
distribution in America most likely declined.
Let us look at that data. Right now,
there are no actual estimates from 1871 to 1909. What there is an
estimate in 1870 and another one for 1910.
The estimate for 1870 comes from the work of Peter Lindert and Jeffrey Williamson.
They used what is known as a “social table.” This approach estimates
income distribution by assigning average incomes to different social or
occupational groups based on historical records, such as census data. It
simultaneously provides total national income and income inequality.
That estimate is not disputed, and if anything, it probably understates inequality because of the problems of census underenumeration of the poor.
The estimate for 1910 is derived from the work of Thomas Piketty in his famed Capital in the 21st Century, and
is not directly based on income data. Instead, he used tax records from
1917 to estimate the top 10% and data from 1913 for the top 1%, then
backcasted these figures to 1910.
The problem is that the estimates
that Piketty (and his co-author Emmanuel Saez) created for 1913 and 1917
are now known to massively overestimate inequality. In an article in
the Economic Journal with Phil Magness, John Moore and Phillip Schlosser and in a companion article with Phil Magness in Economic Inquiry, we
corrected for these errors. In fact, we showed that their entire series
from 1917 to 1962 was flawed because of the way missing filers were
treated, how net income was converted into adjusted gross income, and
how they forgot that state and local governments (5% of the workforce
with incomes well above the national average income) were not required
to file federal taxes until 1938.
We also discovered that Piketty and
his co-authors made an incorrect estimate of total income. They
arbitrarily defined total income as 80% of personal income (as reported
by national accounts) minus transfers. They justified this by claiming
that “the ratio between total gross income reported on tax returns and
personal income minus transfers in national accounts has been fairly
stable since the late 1940s (around 75-80%).” However, according to
their own datasheets, the actual average was 82.7%. While this
difference may seem small, a higher proportion reduces the income shares
of the rich. Using less arbitrary methods, we found a much larger
denominator and, consequently, smaller income shares for the wealthiest
groups.
Overall, we found that the income
share for the top 10% was 5 percentage points lower than that of Piketty
for 1917. If one uses the exact same backcasting method as Piketty did
in his book, you also get a lower share of total income going to the
richest 10% of Americans. When this is then combined with the estimates
of Lindert and Williamson for 1870, we see a significant decline in
inequality as can be seen in the figure below.
This is rich in implications.
Consider that economic growth, depending on the data series used, showed
that Americans enjoyed income increases that averaged between 1.9% and
2.0% per annum between 1870 and 1910. By that point in history, never
had such fast growth been observed. And when there had been growth that
nearly matched that one, it was clearly marked by rising inequality.
Finding that the bottom 90% got a
bigger part of the pie implies that the bottom 90% probably saw
improvements that were larger than the average gains. Given the numbers I
obtained, this means that the income of the poorest 90% increased
between 2.0 and 2.2% every year.
This difference implies that a period
often characterized as one of rising capital concentration and
inequality was, in fact, not only the fastest and most sustained growth
ever observed by that time but also the first in history where the poor
saw their incomes grow faster than average, experiencing significant
improvements in their standard of living.
Some contemporary writers of the 19th
century noted that there were exceptional gains at the bottom of the
income ladder. It seems we overlooked them, in part, because we relied
on data that misled us, obscuring the real progress made by those at the
lower end of the income distribution which contemporaries saw with
their own eyes."