Roth IRA Conversions and Estimated Tax Payments
We are currently making estimated tax payments every quarter, paying equal amounts totaling the prior year’s tax. Our reason for doing this is so that we can do at least one Roth IRA conversion every year. Our only other income is my pension and soon, regular monthly payments from a Traditional IRA. My question is, if I started having tax withheld from my pension every month, enough to cover the tax I would owe on the pension and IRA payments, and later in the year do a Roth conversion, can I make an estimated payment that would cover the tax for that conversion at that time, and avoid having to file Form 2210? I’m trying to figure what our options are if we wanted to avoid making quarterly payments, and weighing that against making tax filing simpler (and avoid filing Form 2210). I’ve read Publication 505 and am still unclear about having to file Form 2210. Also, instead of going by the prior year’s tax, is it possible to make unequal estimated taxes every quarter if those amounts equaled the amount of tax we would owe for that quarter, assuming we were doing Roth conversions, and again avoid filing Form 2210? I hope my questions are clear enough. Thank you for any help.
Permalink Submitted by Alan - IRA critic on Tue, 2018-03-13 00:20
You can combine withholding and quarterlies, but doing so correctly adds complexity. Equal quarterly estimates for the amount remaining after any withholding must meet one of the safe harbors (100% of last year’s tax liability, 110% for higher incomes, or 90% of the current year tax liability. If you instead want to pay as you go because you are converting toward year end, you will have to use the 2210 annualized income installment method to split your income and deductions into the proper quarterly time period. This is the form most people want to avoid. If your IRA RMD is large enough to have your entire safe harbor withholding done from the RMD, you will not need to pay quarterlies, and if you take your RMD late in the year, that is OK because withholding is deemed to have been paid equally throughout the year even though you paid at the end. You could also use your pension for withholding if it is large enough, but that source would be paid monthly, but if your pension allows you to make one change a year, you could backload your pension withholding as well, for example have the amount you need taken from just the last 3 months payments. Remember, if you meet any of the safe harbors using the prior year taxes, you will never pay a penalty even though you may have a large tax bill in April.