Retire With Confidence, Not Guesswork.
A complete planning system that projects your retirement nest egg, tests different retirement ages side by side, and shows exactly how long your savings will last.
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Build your financial toolkit — save up to 34% →This spreadsheet is for anyone who wants to understand where they stand on the path to retirement — not in vague terms, but with specific numbers. Whether you're in your 30s just starting to think about it, in your 40s wondering if you're behind, or in your 50s trying to decide whether you can actually afford to stop working, this gives you the real picture.
It's especially valuable for people who want to compare different retirement ages before making any decisions, anyone who has never calculated their "retirement number" — the amount they actually need to retire — and people who want to understand the difference between their nominal nest egg and what it will actually buy in 20 years after inflation.
On the Your Profile & Inputs sheet, enter your current age, target retirement age, life expectancy (planning age), current retirement savings, and monthly contribution. Then enter your expected annual return rate — 6–7% is a commonly used long-term assumption for a diversified portfolio, though you should adjust this based on your own investment strategy and risk tolerance.
Enter your target retirement age. The projector instantly calculates your projected nest egg at that age. Then use the retirement age comparison to see how the number changes if you retire at 55, 60, 65, or 70 — the difference is often larger than people expect.
Enter your expected inflation rate (2–3% is commonly used) to see the inflation-adjusted value of your projected nest egg in today's purchasing power. A $1.24M nest egg in 22 years is worth considerably less in today's dollars — this view shows you exactly how much.
The withdrawal calculator shows the retirement number you need and how long your nest egg lasts at 3%, 3.5%, 4%, and 5% withdrawal rates — plus a custom rate of your own. The 4% rule is a widely referenced starting point, but the right rate depends on your expected retirement length, other income sources, and risk tolerance.
Enter your desired annual retirement income and any guaranteed income (such as Social Security or a pension). The gap analyser compares your retirement number against your current trajectory and shows exactly how much more you'd need to save each month to close it. This is often the most actionable number the calculator produces.
The single most powerful lever in retirement planning is time. Increasing your monthly contribution by $200 at age 35 has roughly twice the impact of the same increase at age 45, purely due to compound growth over a longer period. Run both scenarios in this spreadsheet to see the difference — it's one of the most motivating things the projector can show you. Also note that inflation-adjusted projections matter more than nominal ones: plan around what your money will actually buy, not just the number in the account.
6–7% is a commonly used long-term assumption for a diversified equity portfolio before inflation. Run the projections at both a lower (5%) and higher (8%) rate to see the range of outcomes — retirement planning is inherently uncertain, so understanding the spread matters as much as the central estimate.
The safe withdrawal rate is the percentage of your nest egg you can withdraw annually with a low risk of running out of money. The 4% rule is a widely used starting point, meaning a $1M nest egg could support roughly $40,000/year. This workbook lets you model 3%, 3.5%, 4%, and 5% — plus your own custom rate — to see the income and sustainability implications of each.
Yes. Upload the .xlsx file to Google Drive and open it with Google Sheets. All formulas, projections, and charts are fully compatible at no extra cost.
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