Converting tax-deferred assets in low-income years
A Roth conversion ladder converts traditional IRA or 401k balances to Roth in tranches over multiple years, ideally during low-income years (like the gap between retirement and Social Security). Converted amounts are taxable in the year of conversion, but then grow tax-free forever.
The strategy is most valuable when the conversion happens in a year with zero or very low income, minimizing the tax bill.
Five-year wait and early access
Each Roth conversion is subject to a five-year holding period before the converted amount can be withdrawn penalty-free. Someone converting at age 55 cannot tap that conversion until age 60, though contributions themselves can be withdrawn earlier.
This timing creates a ladder effect: conversions done in years 1-5 are accessible starting in year 6, allowing penalty-free withdrawals before Social Security or RMDs begin, effectively creating a bridge between retirement and traditional income sources.