So, I had all my taxes estimated and such, but I hadn't filed, because my estimates indicated I'd be owing about $5 grand.
Well, I just filed, and instead I'm getting back about $2500, between federal and state.
Apparently I'd estimated my schedule 179 deductions improperly. My initial estimate was off by $2500, and that was before recalc ulating my AMT etc... I also overpaid my SSN by $490 because I had multiple employers.
I ended up with 5 grand worth of offsets against Federal, AMT (which I would have otherwise owed $1250 of), and state taxes (which I would otherwise have owed about $240).
I've been over it 1000 times, and I'm absolutely sure I've got it correct... which is kinda funny, because I deliberately maximize my witholding allowances so that I owe a bit.