If I added on my W4 for an additional $100 to be removed from my check each payday, on top of my taxes, will I get that money back next tax season?

[MichaelL1 · Accepted solution]

2018 and 2019 tax laws are the same (barring no changes from Congress).

Yes, if you have a small refund or balance due, and income stays exactly the same in 2019, then you could expect your refund to go up by the $100 X the numbers of paychecks that you add the extra amount to in 2019.