What is a Bridge Account? A Bridge Account is a taxable brokerage account built specifically to fund living expenses between an early retirement date and the age when retirement accounts like a 401(k) or IRA become penalty-free to withdraw, generally 59½ in the US. It exists because most tax-advantaged retirement accounts are optimized for a traditional retirement age, leaving a gap for anyone who retires earlier.
Worked example: you plan to retire at 45 with a $1,200,000 total net worth, $900,000 in tax-advantaged accounts and $300,000 in a taxable brokerage. At a 4% withdrawal rate, $300,000 covers $12,000/year for 14.5 years until age 59½, when the remaining $900,000 becomes accessible penalty-free. If $12,000/year is not enough, you need alternatives: Roth Conversion Ladder, SEPP/72(t), or the Rule of 55.
| Age range | Funding source |
|---|---|
| 45-59½ | Bridge account (taxable) |
| 59½+ | 401(k) / IRA, no penalty |
Sizing a bridge account is one of the most common early-retirement planning mistakes: FIRE practitioners often over-fund tax-advantaged accounts for the tax break, then discover they cannot touch that money for years without a penalty or a bridging strategy. Building the bridge account deliberately, alongside retirement contributions, avoids the gap entirely.