[Jemian]

By increasing exemptions, a person is, in essence, giving the government an interest-free loan for a year. Better still, figure out how much those fictional exemptions would be and plunk that money in the booming stock market. Better return for your dollar (the government will NOT pay interest) and you control, in theory, your money.

[NonValueAdded]

Actually, you have that backwards. Increasing the number of exemptions you claim on the W-4 reduces the federal withholding. When you decrease the number of exemptions claimed, i.e. claim Single and zero, you maximize the federal withholding rate and then you are giving the gubermint that interest-free loan.

For 2018 it is best to wait for the revisions to Form W-4 and, of course, consult a tax professional as everyone's situation is different. But the strategy proposed by the original poster has merit.

[CptnObvious]

By increasing exemptions, a person is, in essence, giving the government an interest-free loan for a year.

Don't your mean Decreasing the number of Personal Exemptions?. Decreasing them or leaving them the same can have the effect you describe.

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