Hi guys I recently resigned from my job and I'm wondering about withdrawing from my 401k how does that impact my tax bracket?

Early withdrawals are subject to a 10% penalty if you are younger than 59 1/2, and the distribution is also subject to ordinary income tax at the tax rate for your income level.  You would receive a 1099R in January that would have to be entered on your 2019 tax return.

add $25,000 to your 2018 Taxable Income.
Subtract the Income you're not going to get because you're out of work,
and look it up in the Tax Tables.
That will be an estimate.

Then add on another $2,500 penalty tax.

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