One of the most common questions in financial planning — and one of the most poorly answered — is "how much do I need to retire?" The number that gets thrown around most often is $1 million. Sometimes $2 million. Occasionally someone cites a specific figure with false precision: $1,247,000. None of these answers mean much without context.
The right answer is: it depends on what you spend, what income you have, when you retire, and how long you live. Here is a framework for thinking through it seriously.
Start With Spending, Not a Number
The most common mistake in retirement planning is starting with an asset target — "I need $X" — rather than starting with expenses. Your retirement number is derived from your spending. Get the spending right first, and the number follows.
There are two main approaches:
Bottom-up: List every expense you expect in retirement — housing, food, utilities, transportation, healthcare, travel, entertainment — and add them up. This is the most accurate method but requires honest self-reflection about how you actually live and want to live.
Top-down: Start with your current income, subtract what you won't spend in retirement (commuting costs, work clothes, retirement contributions, mortgage if paid off), and add what may increase (healthcare, travel, leisure). Most financial planners estimate retirees need 70-90% of their pre-retirement income, though this varies significantly by lifestyle.
The Number That Actually Matters
The most important number in your retirement plan is not your total portfolio size — it's your monthly gap. Your monthly gap is the difference between what you spend and what you receive from guaranteed income sources (Social Security, pension, annuity). Your portfolio only needs to fund the gap, not your entire lifestyle.
Guaranteed Income Changes Everything
Before you can calculate how much portfolio you need, you need to know what income you'll have that doesn't depend on your portfolio.
- Social Security. Your benefit depends on your earnings history and claiming age. Claiming at 70 instead of 62 can increase your monthly benefit by 75% or more. For a couple, coordinating Social Security claiming can generate $500,000 or more in additional lifetime income.
- Pension. If you have a defined benefit pension, this dramatically reduces the portfolio you need. A $2,000/month pension is equivalent to having roughly $500,000 in additional retirement assets at a 4% withdrawal rate.
- Part-time work. Even $1,000/month of part-time income in early retirement reduces portfolio withdrawals significantly and can add years to portfolio longevity.
| Monthly Gap to Fund | Portfolio Needed (4% Rule) | Portfolio Needed (3.5% Rate) |
|---|---|---|
| $1,000/month ($12,000/yr) | $300,000 | $343,000 |
| $2,000/month ($24,000/yr) | $600,000 | $686,000 |
| $3,000/month ($36,000/yr) | $900,000 | $1,029,000 |
| $4,000/month ($48,000/yr) | $1,200,000 | $1,371,000 |
| $5,000/month ($60,000/yr) | $1,500,000 | $1,714,000 |
Beyond the 4% Rule
The 4% rule — withdraw 4% of your portfolio in year one and adjust for inflation each year — is a useful starting point but not a complete answer. Several factors can push your safe withdrawal rate higher or lower:
Factors that support a higher withdrawal rate:
- Shorter retirement horizon (retiring at 70 rather than 55)
- Flexibility to reduce spending in down markets
- Significant guaranteed income covering basic needs
- Active management that limits drawdowns during bear markets
Factors that require a lower withdrawal rate:
- Longer retirement horizon (retiring early, long family history)
- Inflexible spending (large fixed costs)
- Heavy reliance on the portfolio for all expenses
- Passive buy-and-hold approach without downside protection
"Your retirement number is not a fixed target. It's a range determined by your spending, your income sources, your flexibility, and how your portfolio is managed."
The Healthcare Variable
Healthcare is the most underestimated expense in retirement projections. Industry research estimates the average retired couple will need $300,000 or more in today's dollars for healthcare expenses in retirement — and that figure doesn't include long-term care, which can easily add $100,000 to $500,000 more depending on need.
Most retirement income projections either ignore healthcare or underestimate it significantly. Build in a realistic healthcare budget from day one, and consider whether an HSA investment strategy can help fund it tax-free.
A Practical Framework
Estimate Your Annual Retirement Spending
Use your current budget as a starting point. Adjust for expenses that will go away (mortgage, commuting, retirement contributions) and those that will grow (healthcare, travel, leisure).
Calculate Your Guaranteed Income
Add up Social Security (at your expected claiming age), any pension, and any other income that doesn't depend on your portfolio.
Find Your Monthly Gap
Subtract your guaranteed income from your spending. This is the only amount your portfolio needs to generate.
Apply a Withdrawal Rate
Divide your annual gap by your withdrawal rate (3.5-4% is a reasonable range depending on your situation) to get your portfolio target.
Stress Test It
What happens if you live to 95? What if healthcare costs double? What if the market drops 40% in year one of retirement? A well-constructed plan should survive reasonable stress scenarios.
The Bottom Line
There is no universal retirement number. $1 million is not enough for some people and far more than enough for others. The right number comes from your spending, your income, your flexibility, and how your portfolio is managed. The most important thing you can do is start with an honest picture of what you actually spend — and build from there. Use our Retirement Calculator and Portfolio Withdrawal Calculator to model your specific numbers.