It depends on your age and your tax bracket.
In addition to the distribution being included as taxable income, the IRS will also assess a 10% early distribution penalty if the participant is under age 59½. The IRS will waive this penalty with some exceptions, including first time home purchase (up to $10,000), higher education expenses, death, disability, unreimbursed medical expenses, health insurance, annuity payments and payments of IRS levies, all of which must meet certain stipulations.