On the contrary, the IRS's interpretation of your income is going to be very uncharitable. My tax liability last year has 6 figures of variability depending on who you ask, and I assume the button-clicking machine will decide on the high end. That's what their automated letter-writing machine does too, and it's very annoying to get letters from it.

The last one I got claimed I owed $10,000 and I had to write a very nice letter back explaining that they actually owed me $45. I got my check 6 months later.