Roth Conversions Are a Luxury Good. Can You Actually Afford One?

The financial media loves Roth conversions. Tax-free growth. No RMDs. Legacy planning. It sounds like a no-brainer — especially if you’re planning to start conversions in 2037 — a year when your income may drop and you could land in a lower tax bracket.

But here’s the part nobody puts in the headline: a Roth conversion is not free. Every dollar you move from a traditional IRA to a Roth generates a tax bill. And that tax bill has to come from somewhere.

If that somewhere is the same account you’re planning to live on, you’re not doing tax planning — you’re just paying taxes earlier.

The luxury test

A Roth conversion only makes sense if you have more money than you actually need to fund your retirement income. That’s it. That’s the test.

If your portfolio is already stretched to cover your spending, converting pulls cash straight out of the income-producing pool. Your withdrawal rate goes up. Your safety margin goes down. And the money you handed to the IRS is no longer growing to support you.

There are two ways this usually shows up:

1. You don’t have enough assets to begin with.
Your withdrawal rate is already high just to cover the basics. Adding a conversion tax bill on top means withdrawing even more from an already-thin base. The math doesn’t care how good the idea sounded in a podcast.

2. You have assets, but your income target is too high.
Even a solid portfolio can crack under a high spending goal. If you need $120,000 a year and your plan only supports $100,000 safely, converting doesn’t help — it makes it worse. You pay the tax bill today, shrink the base, and now need an even higher withdrawal rate to hit the same income number.

The tax bill isn’t just the tax. It’s the future growth and income that money would have generated.

The conversation to have before 2037

If you’re considering conversions starting in 2037, start here:

• What withdrawal rate do you need right now to cover your spending?
• If we paid the conversion tax bill this year, how much would that raise your withdrawal rate going forward?
• Is there a real surplus here, or is every dollar already spoken for?

If the answer is that every dollar matters, converting isn’t a tax move. It’s a drawdown accelerator.

The bottom line

Roth conversions are a powerful tool — for people who can afford to pay the tax bill without touching the money they need to live on. If your spending is already close to or above what your portfolio can safely support, converting doesn’t save you taxes. It just forces you to draw down faster to make up for what you handed to the IRS.

Do the math first. The conversion will still be there after you prove you can actually afford it.