Calculate the power of compound growth on your wealth. Enter your starting amount, monthly contribution and expected return — or, with an account, start from your real portfolio.
Inflation and box 3 included · By year and by month
Already have an account? Open this calculator with your own numbers. Open in the app
That amount grows every month with the return.
Every contribution counts from that month on and grows too.
Earlier years' return itself earns a return too, so the line gets steeper every year.
end value = start × (1 + r)ⁿ + contribution × ((1 + r)ⁿ − 1) ÷ r, where r = annual return ÷ 12 and n = number of months
The calculator opens at 8% a year and shows a band from 5% to 11% around it. That's an assumption, not a promise: past returns are no guarantee for the future.
Turn on 'in today's euros' and the calculator converts everything back to today's euros, using 2.5% inflation a year by default.
If you want. Turn on box 3 and the calculator deducts the estimated levy every year, under both today's system and the proposal from 2028.
No. It's a worked example with a fixed return per year. In reality the market fluctuates.
Upload your transactions. StockQuarters fills in your current value and average monthly contribution, and shows your own return so far alongside.
Try 7 days free