Electronic Filings via Online Tax Software Companies
# Filings
Company
TurboTax
H&R Block
TaxAct
TaxHawk
Credit Karma
TaxSlayer
All Other Companies
TOTAL DIY ONLINE FILINGS

2017
2018
35,949,033 38,217,751
7,427,430 8,064,548
4,466,370 3,995,113
2,899,583 3,406,487
892,926
986,776
814,538
844,417
1,426,433 1,894,280
53,876,313 57,409,372

Mid-Year
2019
38,866,050
8,517,202
3,245,838
3,656,385
1,493,802
813,832
1,684,008
58,277,117

Online DIY Market Share %
Mid-Year
2017 2018 2019
66.7% 66.6%
66.7%
13.8% 14.0%
14.6%
8.3%
7.0%
5.6%
5.4%
5.9%
6.3%
1.7% 1.7%
2.6%
1.5%
1.5%
1.4%
2.6%
3.3%
2.9%

Source: ProPublica analysis of electronic filing data in the IRS’ External Customer Data Store database. For 2019, the “mid-year” data comes from
an extract produced in July 2019.