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α: calibrated so average coauthorship-adjusted count equals average raw count
Self-employed individuals have arguably greater opportunities than wage earners to underreport their incomes. This article uses recent Swedish income and expenditure data to examine the extent of underreporting of income among self-employed individuals. A key hypothesis is that underreporting of incomes among the self-employed would be visible in the data as 'excess food consumption', for a given level of observed income. Our results confirm the underreporting hypothesis. In particular, we estimate that households with at least one self-employed member underreport their total incomes by around 30%. Under-reporting appears to be much more prevalent among self-employed people with unincorporated businesses as among those with incorporated businesses.