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Here is the thing about Roth conversions.
People sell them like magic money machines for retirees who want tax-free cash later. Sometimes they work. Sometimes they explode.
The strategy that builds a fortress of savings for one household? It triggers higher Medicare premiums and lost deductions for another. It depends. Always depends.
Cristina Wiebelt-Smith is a CPA at Gertsema Wealth Advisors. She says the goal is simple: cut Uncle Sam out of the picture. Keep your hard-earned cash.
But the path to keeping that cash is narrow. Here is where it works.
Pay the Dues Now to Win Later
The basic math is straightforward. If you pay a low tax rate today, but expect to face a higher one tomorrow, you convert.
Wiebelt-Smith notes this happens often with required minimum distributions (RMDs). Your portfolio grows. Taxes go up. Maybe your spouse dies and you file single, which usually means higher tax brackets.
By converting, retirees prepay the tax. All future growth stays tax-free.
Simple, right?
Not exactly. Matt Hylland from Arnold and Mote Wealth Management adds a wrinkle. Income tax is just one line on the spreadsheet. You have to look at the net investment income tax. Capital gains. Dividends. Taxes on Social Security benefits.
Income tax is the main driver, yes. But it’s not the only player in the arena.
Don’t Jump Over the Cliff
Here is where Roth conversions backfire. Spectacularly.
There are cliffs. Income thresholds where a tiny jump in taxable income causes a massive spike in costs.
Hylland points out the first trap. Just over $100k in taxable income for married couples. You cross that line? The 22% bracket kicks in instead of 12%. Another jump sits at $403k, moving you from 24% to a steep 32% marginal rate.
Ten percent difference. A big jump.
But the real pain comes from Medicare. Specifically, IRMAA.
Cross that income threshold by even a dollar and the surcharge applies in full. Hylland says in the worst-case scenario that single extra dollar of income costs a couple over $2k in annual premium hikes.
That hurts.
There is a trade-off though. Paying that surcharge today might mean saving decades of higher premiums later. The math gets fuzzy fast.
The Art of Partial Conversions
Advisors agree on one thing.
Do not convert your entire account at once. Ever.
Full conversions are rarely the play. Partial conversions, spread out over several years, give you control.
Wiebelt-Smith says most retirees have enough in traditional IRAs to make a lump-sum conversion “prohibitively expensive.” Too painful.
Instead, find those low-income windows. Spread the pain out.
Manage the brackets. Preserve the deductions. Limit the Medicare creep. Reduce the future RMD pressure. It is a balancing act.
Tax planning cannot be done in a vacuum. Decisions ripple.
Timing the Market (And The Tap)
Markets matter too.
Jennifer Kohlbacher at Mariner Wealth Advisors points to market dips as opportunities. When assets drop, converting IRA shares at temporarily lower values can save serious cash.
She cites a client who timed a dip. Converted a large chunk. Saved $300k in income taxes. That is real money.
Then there is the faucet problem.
Wiebelt-Smith calls RMDs a tap you can’t turn off. They just flow out, forcing income whether you need it or not. Roth conversions reduce the pressure.
Make it manageable.
So is it worth it?
It isn’t about avoiding taxes completely. It never was. It is about deciding which tax bill you prefer to pay. Today. Or tomorrow. When the bill might be heavier.
Nobody has the perfect answer.
But if you don’t think about the cliffs… well. Good luck with that.
