Net Worth Milestone Calculator
Years to next wealth milestone.
Calculate years until reaching your next net worth milestone at current savings pace and expected return. Enter target net worth to see years to target.
What this tool does
This calculator estimates how many years it will take to reach a net worth target based on your current net worth, annual savings contributions, and expected investment return. The result shows the timeline to your milestone at your current savings pace and assumed growth rate. The calculation compounds your existing net worth and adds annual savings year by year until the target is reached. The time horizon is most sensitive to the gap between your current and target net worth, along with your annual savings amount and expected return rate. For example, a larger savings contribution or higher return assumption will shorten the timeline, while a bigger wealth gap extends it. This estimate assumes consistent annual savings and steady returns; actual results may vary based on market conditions, changes in savings behaviour, and economic factors. The output is for illustration purposes only.
Enter Values
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Formula Used
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Calculations or display — let us know.
Disclaimer
Results are estimates for educational purposes only. They do not constitute financial advice. Consult a qualified professional before making financial decisions.
150,000 current, target 500,000, 20,000 annual savings, 6% return: 9.3 years. Changing any lever shifts the timeline. Savings rate dominates in the first half; return dominates in the second. Milestones (first 100k, first 250k, first 500k, first 1m) motivate consistent behaviour.
A worked example
Try the defaults: current net worth of 150,000, target net worth of 500,000, annual savings of 20,000, expected return of 6%. The tool returns 9.3 years. You can adjust any input and the result updates as you type — no submit button, no reload. That's the real power here: seeing how sensitive the output is to one or two assumptions.
What moves the number most
The result responds to Current Net Worth, Target Net Worth, Annual Savings, and Expected Return. Not every input has equal weight. Adjusting one input at a time toward extreme values shows which ones move the result most.
The formula behind this
Year-by-year compound growth of current net worth plus annual savings. Stop when target reached. Everything the calculator does is shown in the formula box below, so you can check the math against your own spreadsheet if you want.
The annual review habit
Plug new numbers in every year. Income changes, expenses shift, markets move. A plan that isn't revisited quietly drifts out of date. This tool is cheap to re-run — so re-run it.
What this doesn't capture
Real plans get re-run against new information every year or two. The result here is a reasonable direction, not a destination. It is a starting point for thinking, not a commitment to a specific future.
What to calculate alongside this
One figure by itself is fragile. The wealth building rate calculator, the annual net worth tracker, and the frugal vs lifestyle inflation path calculator cover adjacent ground — the answer to any one of them changes how you read the output from this tool.
Reaching £500,000 from £150,000 with £20,000 annual savings takes approximately 9.3 years years.
Inputs
This example uses typical values for illustration. Adjust the inputs above to match a specific situation and see how the result changes.
Sources & Methodology
Methodology
This calculator models year-by-year compound growth to determine when a net worth target is reached. Starting from your current net worth, it applies your expected annual return rate each year and adds your annual savings contribution. The computation continues iteratively until the projected net worth equals or exceeds your target figure. The model assumes a constant annual return rate, consistent annual savings amounts, and no withdrawals or changes to these inputs over time. It does not account for fees, taxes, inflation, market volatility, or variations in actual returns. Results represent a simplified projection based on these steady-state assumptions and should not be interpreted as a forecast of actual outcomes.
References
Frequently Asked Questions
Why not a simple formula?
Good milestones to target?
What if I'm already past?
How to hit milestones faster?
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