Roth Conversions With an Annuity: How They Work and What They Cost

A Roth conversion is one of the few retirement-tax moves where you decide when to pay the tax bill, and then never pay tax on that money's growth again. It's also one of the easier moves to get wrong, because the rules around timing, withholding, and paperwork are unforgiving. Here's how a conversion actually works, what it costs, what you get for it, and why a fixed annuity can be a very comfortable place to do one.

What a Roth Conversion Is

A Roth conversion moves money from a pre-tax retirement account, such as a traditional IRA, into a Roth IRA. You owe ordinary income tax on the amount you convert, in the year you convert it. In exchange, that money (and everything it earns afterward) can come out tax-free later, as long as the Roth rules are met. You're choosing to pay tax now, at a rate you know, instead of later, at a rate you can't.

Two points that surprise people: there is no income limit on conversions, and only pre-tax retirement money qualifies. A non-qualified annuity (one bought with after-tax dollars) can't be converted to a Roth.

How the Mechanics Work

1. Decide how much to convert. You can convert all of an IRA or just a portion. Partial conversions, spread over several years, are common because they let you fill up a tax bracket without spilling into the next one.
2. Open or confirm a Roth IRA. The receiving account must be a Roth IRA. It can be held at the same company or a different one.
3. Move the funds. This is done as a direct trustee-to-trustee transfer, an in-account conversion, or a rollover. A direct transfer is cleanest, since no check is ever cut to you.
4. Report it. The company holding the traditional IRA issues a Form 1099-R for the year, and the Roth side reports the receipt on Form 5498. Your tax return reports the conversion, and any after-tax basis in your IRAs is tracked on Form 8606.

The Tax Consequences

• The converted amount is added to your taxable income that year. A $50,000 conversion in a year when you're in an assumed 24% bracket means roughly $12,000 of federal tax on that conversion. Your actual number depends on your full return.
• Pay the tax from outside the IRA if you can. Withholding tax out of the conversion shrinks the amount that lands in the Roth, and if you're under 59½, the withheld portion can be treated as an early distribution subject to an additional 10% tax.
• The pro-rata rule. If you hold both pre-tax and after-tax money across your traditional IRAs, a conversion is taxed proportionally across all of them, not just the dollars you'd prefer to convert.
• It can't be undone. Since 2018, a conversion can no longer be recharacterized back to a traditional IRA. Once it's done, the tax bill stands.
• The ripple effects. A higher income year can push up Medicare Part B and D premiums (IRMAA, which looks back two years), increase the portion of Social Security that's taxable, and reduce ACA subsidies. These are the costs that don't show up on the conversion form, and they're the reason timing matters.
• Each conversion has its own five-year clock. If you're under 59½, converted dollars withdrawn within five years of the conversion can be hit with the 10% additional tax.

What You Get in Return

• Tax-free growth. Qualified Roth distributions (generally after age 59½ and once the Roth has been open five years) are tax-free, including all the growth.
• No required minimum distributions. Roth IRAs have no RMDs during the original owner's lifetime, so the money can stay put as long as you like. See our guide to annuities and RMDs for how that compares with traditional accounts.
• Tax diversification. Having both pre-tax and tax-free buckets gives you control over your taxable income in retirement, which matters for the very ripple effects above.
• A cleaner inheritance. Beneficiaries generally must empty an inherited Roth within ten years, but those withdrawals are typically income-tax-free.

Why an Annuity Can Be a Good Place to Convert

A traditional IRA can hold a fixed annuity, and so can a Roth IRA. Using a MYGA or other fixed annuity inside the conversion has a few practical advantages:

• No market timing risk. The worst-case conversion is paying tax on a balance and then watching the market drop, with no way to reverse it. A fixed annuity's value doesn't swing with the market, so the amount you convert is the amount you're credited.
• Partial conversions are easy to build in. You can split an IRA across several annuities with different terms and convert one at maturity each year, which turns a multi-year conversion plan into a schedule instead of a guess. This pairs naturally with the laddering approach we've written about.
• Known growth inside the Roth. A MYGA's rate is guaranteed for the full term, so you know what the converted money will be worth when the term ends, and that growth is tax-free once it's inside a Roth.
• Full or partial, your choice. You can convert an entire annuity IRA, or only the slice that fits your bracket this year.

One caution: whether a conversion triggers a surrender charge depends on the contract and on how the move is structured, for example whether it stays with the same carrier or goes to a new one. That's something to confirm before anything moves, not after. Our surrender charges explainer covers how those schedules work.

How We Handle Conversions

Roth conversions are a regular part of the work we do with clients, and we take care of the administrative side with you from start to finish: reviewing your existing contracts for surrender and conversion terms, coordinating the transfer paperwork with the carriers, and making sure the conversion amount and year line up with the plan you've built with your CPA. We don't give tax advice, and a conversion should always be sized with a tax professional who sees your whole return, but we make sure the annuity side is done correctly and on schedule.

This article is for educational purposes only and is not tax, legal, or investment advice. Tax rules, brackets, and thresholds change, and individual results depend on your full financial picture. Consult a qualified tax professional before making a Roth conversion decision. Guarantees are backed by the claims-paying ability of the issuing insurance carrier.