Winner: TurboTax

1 of 7 from Tax app showdown (photos)

What's different among TurboTax, TaxAct, and H&R Block At Home tax prep applications? Their interview processes may be similar, but the quality of their additional tools, help and support features, and language are key.

Turbo Tax (Windows|Mac|Online) was our top pick for offering the most complete feature set, a strong Help system, and clear language. H&R Block At Home (Windows|Mac|Online) followed closely, offering strong live support but was weaker importing information,  and at times had  slightly more confusing explanations. Tax Act (Windows|Online) may be cheapest app, but it also lacks adequate help measures and importing. Read our full tax app roundup.