Without all the detailed information, the 2017 TurboTax program cannot calculate your 2018 taxes precisely. However, it can roughly estimate your 2018 taxes. If you want to estimate your 2018 taxes by adjusting your 2017 information ( including if you need to pay any estimated taxes for 2018), please see instructions below.
https://ttlc.intuit.com/replies/6620004
If you want to use your 2017 information to roughly estimate 2018 taxes (refund or owe), you may do so by using this estimator tool:
https://turbotax.intuit.com/tax-tools/calculators/taxcaster/
