I filed my taxes (should have visited a tax service) myself for tax year 2010. Big mistake. I'm being charged a inaccuracy penalty in the amount of $4600 plus interest. I have no tax due yet because of an error on my return I'm being hit with a huge penalty fee. I spent an hour & a half with a CPA yesterday morning. CPA was beyond astounded at the amount of that penalty. CPA is capping his fee at $1000 to make this go away ~ no guarantees tho. Brain injury & tax accounting do not mix. Never again. Geez.