Converting to a Roth creates a separate five-year clock for every conversion — and untouched conversion principal is always available tax-free, while the earnings on it are not. Use this to check what a withdrawal this year would really cost.
| Scenario | No-Penalty Withdrawal | 10% Penalty |
|---|---|---|
| Convert $50,000 at age 45, withdraw $30,000 after 2 years | $30,000 | $0 |
| Convert $50,000 at age 45, withdraw $60,000 after 2 years | $50,000 | $1,000 |
| Convert $50,000 at age 62, withdraw $60,000 after 1 year | $50,000 | $0 |
Key point most people miss: conversion principal is penalty-free the moment it lands in the Roth. Only the earnings grown on that converted money carry the five-year penalty clock. In row two the $10,000 above the converted principal is treated as earnings, which is where the $1,000 penalty comes from — and once you are past 59½, as in row three, that clock stops costing money.
Roth IRAs have two five-year rules and confusing them is the single most common Roth mistake:
The IRS treats Roth withdrawals as coming out in a fixed order: regular contributions first, then conversions (oldest first), then earnings. That means a withdrawal up to the amount of your original contributions is always tax- and penalty-free, no matter what the clock says.
If you are 58 and convert $100,000, then need money at 60, the per-conversion clock still has three years to run. You will pay a 10% penalty on any earnings you remove — not on the $100,000 itself. Waiting until 59½ removes the age-based penalty entirely; waiting the full five years removes the clock.
Without a holding period, a Roth conversion would be a free tax dodge: convert a large balance at a known low tax rate, then pull the money out a month later with no penalty and no tax. The five-year clock forces conversions to be genuine long-term retirement moves rather than a revolving door. It also means the rule punishes exactly one behaviour — converting money you will need soon.
This is why conversion planning usually starts with a liquidity check: keep an emergency fund outside the Roth, and only convert amounts you can leave untouched for five years.
A common strategy is to convert smaller amounts over several years rather than one large lump. Converting $20,000 a year for five years means the oldest conversion matures first, giving you a rolling ladder of penalty-free access. A single $100,000 conversion leaves nothing accessible for five years. The tax bill is identical if your bracket is stable; only the flexibility differs.
⚠️ Important: This calculator models the 10% early-withdrawal penalty on conversion earnings only. It does not compute income tax on earnings withdrawn before the account-level five-year clock and age 59½ are both satisfied, and it does not handle inherited Roth IRAs or non-qualified distributions with basis. Verify with IRS Publication 590-B and a tax adviser.