I completely understand why you'd be grouchy. That running tally in the upper left hand corner of Turbo Tax is a bit annoying, isn't it? I'd prefer to be shocked all at once, not continuously throughout preparation. Watching the amount owed barely move no matter how many deductions I entered was demoralizing.
My bottom line was an additional $2700. I guess I'll file quarterly next year. :-(
What galls me is that I also prepared my son's tax return for his part-time jobs last year and he's getting 27 cents MORE than he had withheld because of the rounding rule. He pays nothing, gets a refund, and I'm here sweating on April 15. I'm hoping I'll suddenly remember a $10,000 donation to a charitable organization that I somehow forgot. I don't think it's going to happen.