Can someone confirm if a distribution under $200.00 from a 401(k) plan would be taxable income? I know that the 20% Federal Withholding is not required to be withheld from total distributions of less than $200.00.

Thank you!

Generally yes. Possible that all or a part could be basis, such as defaulted loan that was subsequently repaid, or qualified Roth distribution, for example. But the 200.00 threshhold does not prevent an otherwise taxable distribution from remaining a taxable distribution.

There is nothing "magic" about the $200 threshold. It is merely the point on the IRS table at which tax withholding begins.