Why did my 2019 taxes due jump from 6,329 in 2018 to a staggering 17,017 this year

[rjs]

The only way to answer that question is to compare your 2018 and 2019 tax returns line by line and see where the major differences are, starting at the top of the Form 1040. The line numbering is different, though, so go by the descriptions, not the line numbers.

[mesquitebean]

Be sure you didn't put a comma or decimal in the wrong place.