Roth IRA Drawdown Calculator
Will your Roth IRA last as long as you do? Model different withdrawal rates and see exactly when your portfolio runs out — or if it keeps growing. Build a drawdown plan you can trust.
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Finding Your Personal Safe Withdrawal Rate
The commonly cited 4% rule originated from the Trinity Study, which analyzed historical market data and found that a 4% initial withdrawal rate, adjusted for inflation, sustained a diversified portfolio for at least 30 years in approximately 95% of historical scenarios. However, your personal safe withdrawal rate depends on your specific circumstances — retirement length, asset allocation, tax situation, and flexibility.
Roth IRA holders have a distinct advantage: since withdrawals are tax-free, a 4% Roth withdrawal provides the same spending power as roughly 5-5.5% from a Traditional IRA in the 22-24% tax bracket. This means Roth IRA retirees either need a smaller portfolio or can withdraw less as a percentage while maintaining the same lifestyle, increasing portfolio survival probability.
Dynamic Drawdown Strategies
Static withdrawal rates (the same percentage every year) are simple but inflexible. Dynamic strategies adjust your withdrawal based on portfolio performance. The guardrails approach increases withdrawals by 10% when the portfolio rises above its target value and decreases by 10% when it falls below. This flexibility dramatically increases portfolio longevity while allowing you to enjoy more income in strong markets.
Another approach is the floor-and-ceiling method: set a minimum withdrawal for basic needs and a maximum for good years. Your Roth IRA is ideal for this because there are no required minimums forcing you to withdraw more than you need. During market downturns, you can temporarily reduce Roth withdrawals and rely on other income sources, preserving your tax-free portfolio for recovery.
Frequently Asked Questions
The 4% rule remains a reasonable starting point for a 30-year retirement. However, recent research by its creator, Bill Bengen, suggests that 4.5% may be safe for diversified portfolios. For longer retirements (40+ years), a more conservative 3-3.5% rate is recommended. The key is flexibility and willingness to adjust.
Roth IRA withdrawals do not count as taxable income, so your effective spending from each dollar withdrawn is higher. A $40,000 Roth withdrawal equals $40,000 of spending. A $40,000 Traditional IRA withdrawal might only provide $30,000-$34,000 after taxes. This means your Roth IRA portfolio can be smaller and still support the same lifestyle.
Sequence of returns risk means that large withdrawals during market downturns early in retirement can permanently impair your portfolio. If markets drop 20% and you withdraw 5%, your portfolio drops 25% — requiring a 33% gain just to recover. This is why flexible withdrawal strategies are so important.
Most advisors recommend spending taxable accounts first, then Traditional IRA/401(k), and Roth IRA last. This maximizes the Roth IRA compounding advantage and preserves the most tax-efficient asset for later years when healthcare costs and tax rates may be higher.
At 3% inflation, $50,000 of purchasing power today requires $67,200 in 10 years and $90,300 in 20 years. If your withdrawals do not increase with inflation, your real spending power declines significantly. Our calculator lets you model inflation-adjusted withdrawals to maintain your lifestyle.