Decade Financial Plan Calculator
Where will you be in 10 years?
Project where your savings will be in 10 years vs your target. Enter current balance, annual contribution, return rate, and goal.
What this tool does
This tool projects your financial position over a 10-year period. You enter your current savings, yearly contribution amount, expected annual investment return, and a target figure. The calculator compounds your starting balance and contributions at the return rate over 10 years, then measures the outcome against your target. Results show your projected value at year 10, any shortfall or surplus relative to the target, how close you are to your goal as a percentage, and total amount contributed over the decade. The projection assumes contributions stay constant each year and investment returns remain steady throughout the period. This is a simplified model for illustration and does not account for taxes, fees, market volatility, or changes in contribution capacity. Use it to explore different scenarios and understand how time, regular contributions, and assumed returns interact.
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.
Ten years is long enough for compounding to do something, short enough that the projection still feels concrete. This tool takes current savings, an annual contribution, an assumed return, and a target amount, then shows whether you're on track for the decade.
The output is three numbers: the 10-year projected value of your current savings plus annual contributions, the gap to your target, and your on-track percentage. Someone with 20,000 saved adding 6,000 a year at 7% ends up with around 122,000 - on track if the target is 100,000, well short if it's 250,000. The tool shows the gap directly so you can decide whether to contribute more, aim lower, or accept the shortfall.
The projection uses flat annual contributions and a single return rate. In reality, contributions grow with income, returns vary year to year, and targets change with circumstances. The output functions as a planning baseline, not a commitment. Run it again each year with updated numbers.
Quick example
With current savings/investments of 20,000 and annual contribution of 6,000 (plus annual investment return of 7% and 10-year target amount of 100,000), the result is 122,241.71. Change any figure and watch the output shift — it's often more useful to see the pattern than to memorise the formula.
Which inputs matter most
You enter Current Savings/Investments, Annual Contribution, Annual Investment Return, and 10-Year Target Amount. Not every input has equal weight. Adjusting one input at a time toward extreme values shows which ones move the result most.
What's happening under the hood
Current savings grown at compound return for 10 years, plus annual contributions grown as an ordinary annuity. Gap calculated vs target. The formula is listed in full below. If the number looks off, you can retrace the calculation by hand — that's the point of showing the working.
Using this to think, not predict
Financial plans are wrong by month six — new information arrives and reshapes the picture. The point of running projections isn't to be right in ten years; it's to be less wrong in the decision you're making this week.
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.
With £20,000 now plus £6,000/year at 7%%, you'll have 122,241.71 in 10 years vs a £100,000 target.
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 computes your projected financial position after 10 years using compound growth. It takes your current savings and grows them at your specified annual investment return rate over the full decade. Separately, it models your annual contributions as an ordinary annuity—each contribution grows at the same rate for the remaining years until the end of the period. The two amounts are then summed to produce your total projected balance. The calculator assumes a constant annual return, contributions made at consistent intervals, and no withdrawals or fees. It does not account for taxes, inflation, market volatility, or variation in actual returns over time. The final gap is computed by comparing this projected total against your stated 10-year target amount.
Frequently Asked Questions
Why 10 years specifically?
What return rate is realistic?
What if my contributions can grow?
Aim for the exact target?
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