How Much Do You Need to Retire?
Retirement planning comes down to two numbers: the nest egg you are on track to build, and the nest egg you will need. This calculator estimates both. It grows your current savings and monthly contributions until your chosen retirement age, converts the result into today's money so it is easy to understand, and compares the income that balance can support with the income you say you want.
Step 1 — Project your savings
Your current balance and monthly contributions grow at the expected annual return, compounded monthly, exactly as in our compound interest calculator. The result is shown in nominal dollars — the number you would actually see on a statement in the future.
Step 2 — Adjust for inflation
A million dollars in 30 years will not buy what a million dollars buys today. At 2.5% inflation, prices roughly double over 28 years. We divide the future balance by the cumulative inflation factor to express it in today's purchasing power, which is the only fair way to compare it with an income goal stated in today's money.
Step 3 — Apply a withdrawal rate
The "4% rule" comes from research by financial planner William Bengen (1994) and the later Trinity Study (1998). They found that, historically, a retiree who withdrew 4% of a balanced portfolio in the first year and then adjusted that amount for inflation each year would rarely have run out of money over 30 years. Dividing your desired income by the withdrawal rate gives the nest egg you need: $40,000 ÷ 4% = $1,000,000.
| Desired yearly income | Nest egg at 4% | Nest egg at 3.5% |
|---|---|---|
| $20,000 | $500,000 | $571,000 |
| $40,000 | $1,000,000 | $1,143,000 |
| $60,000 | $1,500,000 | $1,714,000 |
| $80,000 | $2,000,000 | $2,286,000 |
Savings benchmarks by age
Several large retirement-plan providers publish rule-of-thumb milestones expressed as multiples of your annual salary. A commonly cited set is roughly 1× your salary saved by 30, 3× by 40, 6× by 50, 8× by 60 and 10× by 67. These are guides rather than rules — your target depends on when you retire, your expected lifestyle and other income such as pensions or government benefits.
Levers you control
- Start or increase contributions now. A dollar saved at 30 has roughly twice as long to compound as a dollar saved at 45.
- Capture any employer match. A matching contribution is an immediate, guaranteed return.
- Retire a little later. Each extra working year adds contributions, adds growth and shortens the period your savings must cover.
- Keep investment fees low. Fees compound against you just as returns compound for you.
- Plan your spending. Many retirees spend less on commuting and work costs but more on travel and health care.
What this calculator does not include
Pensions, government retirement benefits, taxes, investment fees, changing contribution levels and market volatility are not modelled. Sequence-of-returns risk — a market crash right at the start of retirement — can matter as much as the average return. For a full plan, combine this estimate with an official benefits statement from your country's pension authority and, ideally, advice from a qualified planner.
Frequently Asked Questions
Is the 4% rule still safe?
The 4% rule is a historical guideline based mainly on US market data for a 30-year retirement. Some researchers suggest 3–3.5% for early retirees or in low-return environments, while others argue flexible spending allows higher rates. Try both 3.5% and 4% to see a range.
What return should I assume?
Many planners use 5–7% for a diversified, stock-heavy portfolio before inflation, and lower figures for more conservative portfolios. Using a modest number protects you from overestimating.
Should I include social security or a pension?
Enter only the income you need from your own savings. For example, if you want $50,000 a year and expect $20,000 from a pension or government benefit, enter $30,000.
Why show results in today's money?
Because $1,000,000 in 30 years will buy much less than $1,000,000 today. Converting to today's money lets you compare the projection directly with the lifestyle you can picture now.
Disclaimer: This calculator is for educational purposes only and does not constitute financial, tax or investment advice. Results are estimates based on the assumptions you enter; real returns, rates, fees and taxes vary. Consider speaking with a licensed financial professional before making decisions.
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