For tax year 2014, we submitted our tax return through TurboTax in early 2015.
We received our refunds (Federal/State) a few weeks later.
In the summer of 2015, we received a letter from the IRS saying we hadn't paid enough taxes and that we still owed $2,000. I should have researched it some more since I wasn't sure what mistake I had made, but I ended up setting up a $50/month payment plan.
Just a few days ago, I realized I neglected to include medical related tax deductions in our 2014 return.
We'd like to file a 1040x to recoup the additional refund we believe we're due, but we're not sure how to fill out the forms taking into account the $2,000 amount the IRS thinks we still owe them. The 1040x lets you fill in the "original" numbers you filed along with your amended numbers. How should we include the $2,000 amount in those figures? I'm guessing we'll need to include a note about it as well, explaining all about it.
When you do your amendment, you can include the details in the description of why you're filing an amendment; attaching a cover letter when you mail it in would also be a good idea.
Here's how to get started on your amendment: