If you and your spouse are both withholding as married, taxes are withheld as if this paycheck is your family's only source of income. That's why everything looks fine and dandy with only one W-2 put into your online tax preparer, but there's a sudden massive liability when you put your spouses in. Your spouse didn't mess up, the same thing would happen if you put their's in first and your's in second. Both of you should be withholding as either single or dual income.
Similarly, each job withholds as if it is your only job. If you have 3 jobs where you each make $12k a year, each job assumes you'll have no tax liability. It looks fine when you put the first W-2 in, but increases as you add the others. Your second and third job didn't mess up, the same thing would happen if you started with either of the two other W-2s. Use the IRS's official tax burden estimator to figure out how much extra you should be withholding through one of these jobs to compensate for the other two.
Submitted January 29, 2019 at 07:49AM by TCFNationalBank http://bit.ly/2CVt0Cn
