Individual income tax returns were due for 2010 yesterday. A large number of these tax returns are now filed electronically. In 2010 e-filing accounted for 69.3% of all individual income tax forms filed for the tax year 2009. Today’s market size is the number of those returns filed as of December 31, 2010. The IRS expects this figure to rise for coming tax years. Of the returns filed electronically last year, 35.3% were filed by the filer him or herself and the remaining 64.7% were filed by a professional preparer.

Geographic reference: United States
Year: 2010
Market size: 98,740,000 individual tax returns for tax year 2009
Source: “2010 Filing Season Statistics,” an online report made available online by the
IRS here.
Original source: U.S. Internal Revenue Service