Start-up costs from prior years
I officially formed my business in 2012, however, was working on it and incurring start-up costs in 2011 and 2010. When I filed my tax returns in 2011 and 2010, I filed only my personal tax return and did not files one for the business. In other words, I have never told the IRS how much money I spent on my business in 2011 and 2010. How do I now properly handle this in order to get my full deduction?