Retirees Risk 10% Tax Hit on Roth Conversions if January 15 Payments Are Missed
Updated
Updated · Yahoo Finance · Aug 30
Retirees Risk 10% Tax Hit on Roth Conversions if January 15 Payments Are Missed
3 articles · Updated · Yahoo Finance · Aug 30
Summary
January 15 is the key tax deadline for retirees who made Roth conversions by December 31, because unpaid estimated taxes can trigger IRS underpayment penalties before an April return is filed.
IRS rules treat the conversion as ordinary income and assess the penalty like interest—federal short-term rates plus 3 percentage points—accruing from each missed quarterly installment rather than as a one-time filing charge.
Late-year withholding can blunt that risk: tax withheld from wages, pensions or IRA distributions is generally credited evenly across all four quarters, while a January estimated payment covers only the fourth quarter.
Safe-harbor payments based on 100% or 110% of the prior year's tax can avoid penalties, but waivers require Form 2210 and are limited; states may impose separate underpayment charges.
Using the converted funds themselves to pay the tax also cuts the Roth balance, and for savers under 59½ the withheld amount can be treated as an early distribution subject to an additional 10% tax.