With Greece and its debt
problems still in the news five and a half years after it began and four years
after it reached the critical point in June 2011, the country still has to find
a long-term solution to its $374.5 billion potential debt default.
As it stands now, Greece's debt is 168 percent of GDP and it is accruing
interest at $28.1 billion annually.
A paper by Nikolaos Artavanis, Adair Morse
and Margarita Tsoutsoura at the Booth School of Business at the University of
Chicago examines one of the key issues that worsened Greece's fiscal health.
The authors use an interesting approach to estimate income tax evasion
from Greece's private sector by examining the amount that banks lend to
individuals. They note that banks are most likely to lend to all
individuals based on the banks' perception of true income meaning that
tax-evaders will be granted credit far in excess of what they would normally be
given if their incomes were as low as they reported to the government.
The authors used
household credit data from tens of thousands of applications by wage and self-employed workers for
credit products between 2003 and 2010; this data includes credit cards,
mortgages, term loans, overdraft facilities, appliance loans and refinancing, with all data sourced from
a large Greek bank, to estimate the true income of individuals. The bank
being used in the study is one of ten large Greek banks that has branches
throughout Greece. Mortgage data, in particular, is useful for
determining real household income since individuals that take out a mortgage
generally choose to buy as much house as their household income permits and the standard rule of thumb states that mortgage payments should not exceed 30 percent of monthly income.
The authors note that they only had mortgage data from 2006 onward,
however, 80 percent of Greek households end up owning a home so the sample size
is reasonable. The authors also use a
standard tax evasion assumption which states that for wage workers, reported
income is generally equal to real income. On the other hand, those that are
self-employed will find it much easier to declare less income than what they
earn since the income paper trail is less robust.
Now, let's look at the
findings which vary somewhat depending on the credit facility used (i.e.
refinancing, credit cards, mortgages).
From the data on refinancing,
lawyers, engineers, accounting, finance and medicine are identified as
professions in which the self-employed neglect to declare at least half of
their income. Surprisingly, refinancing data shows that education is a
significant tax-evading industry. This is because many families in Greece
hire private tutors for their school-aged children. As well, those who
are employed in media, particularly journalists, are high tax-evaders, largely
because they have influence over political decision-making and have enjoyed
relatively little scrutiny regarding their incomes.
From the data on credit
cards, the authors looked at credit card limits with the largest being 35,000
euros. This data shows that the biggest tax evaders are employed in
education, construction, law, the media and the arts. Accounting,
financial services and medicine also appear, however, at rates that are
slightly lower than for other types of credit since the credit card model is
less robust for high income individuals.
From the data on mortgage
payments, the authors found that accountants, financial service professionals,
doctors and engineers are the biggest tax evaders. Lawyers have slightly
lower tax evasion that what is shown for other types of credit but still appear
high on the list of income under-reporting.
The authors found that,
in general, tax evasion increased as wealth increased as shown on this graph
which shows the difference between reported income and real income for each 5th
of a percentile:
Overall, the biggest
reported-to-true income multipliers by industry in Greece are as follows:
1.) Education.
2.) Medicine.
3.) Engineering.
4.) Law.
5.) Media.
6.) Fabrication.
7.) Accounting and
Financial Services.
On average, these occupations reported well less than half of what is actually earned. It is interesting to see that these occupations require advanced degrees and that revenue depends on reputation.
In terms of the amount of
tax evaded as measured in euros, the ranking is as follows:
1.) Doctors.
2.) Private Tutors.
3.) Engineers.
4.) Lawyers.
5.) Accounting and
Financial Services
Here is a table showing
the level of tax evasion in euros by occupation:
As an aside, Transparency
International's National Survey on Corruption in Greece for 2010 showed that
Greeks reported paying the largest bribes to hospitals, followed by lawyers,
doctors, banks, vehicle inspection centers, clinics, civil engineers and other
engineers. The payment of bribes is the most significant way that wage
earners can evade taxes.
For the sake of
completeness, here is a map showing the percentage of tax evasion by Greek zip
code with the darker colours showing a higher level of tax evasion:
The red circled area is
Larissa which, coincidentally, has the largest number of Porsche Cayennes in
Europe.
One of the biggest
problems facing Greece is its inability to collect income taxes owed by some of
the nation's wealthiest and most highly educated professionals. Using the
data in this study, the authors estimate that, in 2009 alone, 28 billion euros
in self-employed income went untaxed which amounted to 31 percent of the
government's deficit in 2009 or 48 percent of the deficit in 2008.
Without more a more robust tax collecting mechanism, all of the actions
by the EU, IMF and World Bank will obviously not solve Greece's long-term debt problems.