What is the best time to do a Roth conversion?

The best time to do a Roth conversion is when your current marginal tax rate is lower than the rate you expect to pay on those dollars in the future, making the tax cost of converting smaller than the long-term benefit of tax-free growth.

The Most Valuable Conversion Window

For most people, the strongest opportunity falls between retirement and the start of required minimum distributions (RMDs). Once you stop working, your taxable income often drops significantly. Social Security may not yet be fully in play, and RMDs have not yet started adding to your income. This window, commonly between your early 60s and age 73 (or 75 for those born in 1960 or later), gives you room to convert at lower brackets before RMD income forces you into higher ones.

Other years with temporarily reduced income can be equally valuable at any age. Good examples include a mid-year retirement, a business loss year, or a year with unusually large deductions.

When Within the Year to Act

Calendar timing matters less for taxes than it does for planning accuracy. Converting early in the year gives you flexibility, but many advisors prefer the fourth quarter, when your full-year income picture is clearer and you can convert precisely up to a bracket ceiling without overshooting. Converting during a meaningful market decline is another consideration: moving assets at temporarily depressed values means more future recovery happens inside the Roth, where it grows without further tax.

One More Factor: Asset Valuation

If your IRA or 401(k) holds privately held business interests, LLC interests, or other illiquid assets without a publicly available market price, conversion timing also involves securing an independent Fair Market Value appraisal as of the conversion date. The appraised value determines the income you recognize. Our Roth IRA Conversion Appraisal specialists can help ensure that valuation is in place before you convert. You can also use our IRA Conversion Tax Calculator to model different conversion amounts and tax scenarios before deciding when and how much to convert.