In that case, I can only suggest you print your return in draft form and compare it line by line with last year. I can't see your returns and can't do the comparison for you. It sounds high unless there are other factors I am missing. Sometimes, certain kinds of income can disqualify you from other tax deductions or credits.
For example, having income from real estate will disqualify you from the earned income credit. That could be part of the change if you had EIC and no real estate last year.
