[Thom Pain]

"...pay estimated income tax quarterly"

So, do you think using IRS filings (quarterly for self-employed, monthly for employees) would be more accurate, similarly in-accurate, or even less accurate than the current system?

Alternatively, do you (or anyone) have a suggestion for a more trustworthy, accurate system?

[csmusaret]

Including all tax filings would probably improve accuracy, but it would also include retired people reporting investment income. I guess no system is perfect.