Employers have until January 31 to provide your W-2 to you. Some employers make W-2's available for import--but you need information from the paper W-2 in order to access it. Wait for your W-2-- do not try to prepare your tax return using a pay stub! You have time--the IRS will not begin accepting returns until January 29, and the filing deadline is April 17, 2018.
https://ttlc.intuit.com/questions/1934390-how-do-i-import-my-W-2
https://ttlc.intuit.com/questions/2588751-why-can-t-i-import-my-w-2
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