I worked four jobs last year(2016), why so I owe so much money to both federal and state??

[j_luchetta]

I also had to amend my return because I forgot I had more than one W-2 coming to me. Is that why I owe? I always thought anything I owe was taken out of my paychecks. Also, saying I'm getting every tax break, then telling me I owe money tells me I'm not getting every tax break.

[ChrisV]

Often times when you receive multiple W2s, the combined income pushes you into a higher tax bracket. However, each individual W2 assumes you're in a lower tax bracket because it doesn't know about the income from other sources, and therefore under-withholds what is necessary for taxes. This is likely what is occurring in your situation.

In future years, if you expect to receive multiple W2s, you can use a free tool such as Intuit TaxCaster to help estimate what your tax liability will be, and can adjust your W4 accordingly so that it withholds to appropriate amount.