It's very common and normal for box 5 to be more than box 1. The difference is sometimes hard to figure out but it is usually because of 401k contributions and other pre-tax deductions.
Are you trying to enter in your 2015 W2 info before getting the actual W2 in January? DO NOT DO THAT! ? Wait for the W2! We can't stress that enough. You have to wait for your employer to send you the W2. It is the tax summary of your wages for the year. They have to send it to you by Feb 1. You can't use your last paystub because there might be differences in the taxable amounts sent to the IRS. And you don't know what amounts to put in which boxes. There are several items that are deducted pre-tax that will affect your taxable gross income. Usually your last paystub does NOT match your W2! And you can't file until you get the actual W2.
See this article….
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