The IRS quality review rules sound ideal--the volunteer who prepares the return makes a few judgement calls re filing status etc and enters the data. Then a person more knowledgeable goes over everything before the taxpayer leaves the office and the return is filed. EXCEPT THAT the knowledgeable person isn't there every minute the site is open. And when there's a line out the door, those checklists aren't always followed to the T. IRS's own audits have shown that.
The situation reminds me of my days at HRB. The computer locked certain returns for quality review, either because they had something unusual (even a K-1) or the client bought the peace of mind guarantee. At the end of the day, those returns were checked and the checker's code entered so they could be released to efile. Problem was that the client and his/her original documents were long gone. There was no way to verify that the client really qualified for HOH status or was entitled to claim that dependent. All you could do at that late date was check that the W-2s etc that we retained were entered correctly. And often when the original preparer was a respected colleague, you just signed off on it without questioning anything. Out of the hundreds I reviewed, I can only think of a dozen that I continued on hold because something seemed out of whack. What a waste of time and false sense of security. And that's exactly what I think of the IRS rules for its VITA sites. Sound good on paper but....
I too know many really good preparers who pride themselves on volunteering for VITA. Several EAs, others with 20+ years tax prep experience, even a former IRS agent. I'm sure they do a really good job with those clients who are lucky enough to see them. That said, a very experienced pro I know left VITA because she was the one who checked returns and said that 90% of them were wrong. She thought they were harming rather than helping their clients.
The problem reflects the fact that so many people think they know how to do taxes. (How many returns have you corrected that were done by someone's coworker or brother in law?) The IRS reinforces the idea by giving people a brief training session and a rulebook, and then certifying them as "trained" volunteers. Yet filing status and EITC are among the most complicated parts of the tax code. at times stumping even those of us with extensive training. As much as they'd like to make it seem that anyone can quickly learn how to do a "simple" return, I don't think there is such a thing as a simple return anymore.
We do few EITC returns where I work, but I confess that I have referred to VITA a couple of them where I suspect unreported income. The unpaid volunteers don't have to answer the due diligence questions on Form 8867, nor are they subject to the huge fines.