It depends. Due to the lower income tax rates in several tax brackets, the withholding tables were lowered for 2018 and employers were instructed to take out less taxes. This impact is affecting many tax returns in 2018 and is part of the reason the IRS lowered the underpayment penalty threshold to 80% of the tax amount due in March of this year (as opposed to the original 90% of tax due threshold).
See more information here:
https://ttlc.intuit.com/replies/3301788
You may want to consider changing the allowances on your W-4 forms,
you
can do this utilizing TurboTax’s W-4 Withholding Calculator.
