Every year around this time, we get the same question in coaching sessions. Someone has heard about Roth conversions, likes the idea of tax-free growth, and wants to know if they should move money from their traditional IRA or 401(k) into a Roth account.

The short answer is that it depends. Roth conversions can be a smart move. But they come with a catch that trips up a lot of investors, and it usually shows up months after the decision was made.

What Is a Roth Conversion?

A Roth conversion means moving money from a pretax account, like a traditional IRA or traditional 401(k), into a Roth account. In a Roth, you pay tax on your contributions today, the money grows tax deferred, and as long as you keep the funds in the account for at least five years, all of the growth comes out tax free when you eventually withdraw it.

That tax free growth is the appeal. If you have money sitting in a pretax account that you know you’ll owe tax on eventually, converting it to Roth now can mean paying tax once and never again on the growth.

Why the Timing of Taxes Matters

Here’s where it gets tricky. When you convert money from a pretax account to a Roth, that conversion counts as income in the year you do it. If the money has never been taxed before, it gets taxed at your ordinary federal and state income tax rates for that year.

That means before converting, you need to think about how the converted amount stacks on top of your regular income for the year, and whether it pushes you into a higher tax bracket, both federally and at the state level. A conversion that looks great on paper can get a lot more expensive once you factor in the actual bracket it puts you in.

The Blind Spot Most Investors Miss

One of the biggest issues we see is timing. A lot of investors do their Roth conversion early in the year, maybe in the first quarter or sometime in the first half, and then simply move on with life. The conversion is done, so it feels finished.

Then the following January, a 1099-R tax form shows up in the mail reporting the taxable amount from that conversion. By then, it’s easy to have forgotten there’s extra tax owed on top of a normal tax bill. That can create a real shortfall if you weren’t planning for it.

The fix is simple but often overlooked. If you convert funds, set aside money to cover the additional tax, and keep that conversion in mind when you’re estimating what you’ll owe the following spring.

What Is the Pro Rata Rule?

If you’re converting money from an IRA, there’s another wrinkle to understand called the pro rata rule. This rule can affect how much of your conversion actually gets taxed, especially if you have a mix of pretax and after tax dollars across your IRAs. It’s not something to guess your way through. It’s worth understanding clearly, or working with someone who can walk you through it, before you convert.

Are Roth Conversions Worth It?

We’re big believers in Roth accounts as a savings vehicle. Tax free growth and tax free withdrawals in retirement are powerful tools for long term financial security. But a conversion isn’t a decision to make casually.

Before you convert, you want clear answers to a few questions. How much are you converting, and what tax bracket does that push you into this year? Do you have the cash on hand to pay the tax bill, ideally without pulling from the retirement funds themselves? Do you have a mix of pretax and after tax money in your IRAs that could trigger the pro rata rule?

Getting these answers ahead of time is the difference between a smart, planned conversion and an unpleasant tax surprise the following January.

Talk to Someone Before You Convert

A Roth conversion can be a great tool for the right situation. But it’s not one size fits all, and the tax implications are real. If you’re considering converting pretax retirement funds to Roth, or you’ve already done a conversion and want to make sure you’re prepared for the tax bill, reach out to our team. We talk through these decisions with people every day, and it’s always better to plan for the tax hit before it arrives than to be surprised by it later.