Do not try and file your tax return using your last paystub. The IRS does NOT have your last paystub, they have the W-2 that was provided by your employer and will, in most cases, not match what is shown on the paystub.
Wait for the W-2. Employer have until January 31 to provide a W-2. The IRS will not be accepting any 2016 tax return until January 23.
See this TurboTax support FAQ about last paystubs - https://ttlc.intuit.com/questions/1899643-can-i-use-my-last-paystub-if-i-don-t-have-my-w-2-yet
