Deductions & credits

I had the same thing happen...... Si now we owe around $1700 on top of the $2000 already paid.  I retired on 12/30/19 and I kind of think TT did not cpmplete our taxes properly..So, now having to pay the additional $1700! I found other issues with TT this year as well regarding clarity of a transfer if funds from my 403B to an IRA.  I almost think that is where the oroblem possibly lies. I contacted IRS, and of course got NO assistance. Nothing online either.... Typical.