The program has also seen success outside of the U.S. Programs in Sweden and Denmark claim participation rates of over 75% (downloads as a pdf). Could the IRS duplicate those kinds of results? I'm not so sure. Notwithstanding the costs - which would be huge - to convert to such a system in the U.S., I don't think that U.S. taxpayers would embrace a system where the government prepared their returns. For one, U.S. taxpayers aren't enthralled with the feds these days. Most are seeking less government interference, not more. I don't think many taxpayers would trust the government with their own finances; after all, the government can barely manage its own. Further, if you've ever seen a substitute return (one prepared by the IRS for a taxpayer), you know that there's a financial incentive to prepare a return that produces the most revenue for the government, not what's most advantageous to the taxpayer. And the benefit of that to taxpayers is what, exactly? The underlying problem isn't that taxpayers don't have the wherewithal to fill out a simple tax form (and keep in mind that this option would only be available to taxpayers with simple returns): it's that the Tax Code is far too complicated as it stands. The simple tax forms aren't the problem and yet, those are the very returns the IRS seeks to make more, well, simple with this kind of plan. We keep skirting the real problem: a tangled, confusing Tax Code. I would suggest that reform, not pre-filled returns, is a better, more economical answer. What do you think? What you think about pre-filled tax returns?