Sorry, but even after running Taxcaster a few more times, I'm still confused.
Entering on Taxcaster:
-Married filing jointly with one dependent
-Total taxable income - $0
-Total tax withholdings - $0
-Estimated total state/federal taxes paid - $0
-LTCG - $5K
-Qualified dividends - $13K
-Interest - $150
-Charitable contributions - $50
-tIRA to Roth conversion - $10K
Taxcaster 2018 Estimated Federal Refund: $1,400
WTF? Why? When I raise the tIRA to Roth conversion amount to $20K, Taxcaster still says we'll get a $1,400 federal refund. When I raise the tIRA to Roth conversion amount to $30K, Taxcaster says we'll receive a $1,382 refund from the federal government. Raising the tIRA to Roth conversion amount to $40K, Taxcaster predicts we will get a $382 refund from the federal government. Refund of what? We haven't paid anything to get refunded. Is Taxcaster predicting a tax credit? My understanding is, we don't qualify for the EITC, because we've got too much investment income, right?
Do Taxcaster's predictions for our 2018 taxes make sense, or am I doing something wrong in the way I'm inputting our data?