“The return on investment for what the Internal Revenue Service reports to be a $2.7 million government system that allows citizens to obtain previous year tax returns, so far, looks to be about negative $42.7 million. The ROI could fall deeper into the red, based on revelations about a breach of the online service — although exact cost estimates for the IRS system remain hard to pin down.”
Source: The IRS Spent $2.7 Million on a Tool That Shelled Out $39 Million to Crooks – Nextgov.com