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:
For calendar year 2007, taxpayers covered by an HDHP may contribute up to the lesser of the annual deductible or $2,850 ($5,650 for family coverage).