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:
Test for determining deductibility of IRA deductions. Active participants in employer retirement plans are subject to IRA deduction phase-out rules if adjusted gross income exceeds certain threshold.