The IRS has announced that the interest rates applicable to overpayments and underpayments of federal taxes for the fourth quarter of 2019 are the same as for the third quarter of the year (Rev. Rul. 2019-21). The rates are:
An amount taken from income as a prepayment of an individual’s tax liability for the year. In the case of wages, the employer withholds part of every wage payment. Backup withholding from dividend or interest income is required if you do not provide the payer with a correct taxpayer identification number. Withholding on pensions and IRAs is automatic unless you elect to waive withholding.