Work out how much to set aside each month to reach a financial goal, taking into account the return and your starting amount.
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Enter the target amount, starting amount, period and the estimated annual return.
We calculate how much to deposit monthly to reach the goal, assuming a constant annual return.
Monthly amount needed = 662.08 £/monthStandard financial formulas (time value of money). Instant in-browser calculation, no account, no data sent. Rates are indicative — check the provider’s actual offer. Last updated: 11 July 2026 · Bank of England base rate.
⚖︎ Results are for informational purposes and do not constitute tax advice. For specific situations, consult a licensed accountant or the relevant tax authority.
From the goal, period and return, we find the required monthly deposit via the future-value-of-an-annuity formula:
For a goal of £50,000 in 5 years, with £5,000 to start and 4% return, you need to deposit ≈ £660 per month.
From the target amount, period and annual return, the future-value-of-an-annuity formula finds the required monthly deposit, also accounting for your starting amount.
An annual return (from interest or investments) lowers how much you must deposit, because part of the goal is covered by the compound growth of money already saved.
It depends on the instrument: a UK savings account offers a few percent, while a diversified long-term investment historically returns more but with risk. Use a prudent, realistic estimate.
At 0% return, the monthly deposit is simply the gap between goal and starting amount, divided by the number of months — plain saving without interest.
The starting amount also grows through interest over the whole period, so it reduces the required monthly deposit. The more you start with, the less you deposit each month.
By raising the monthly deposit, extending the period, or choosing a higher return (with higher risk). A standing order that moves money automatically on payday helps with consistency.
No. The goal is stated in nominal terms. To preserve purchasing power, raise the target by the inflation estimated over the period.
Yes. Before saving for long-term goals, many experts recommend an emergency fund of 3–6 months of expenses, kept liquid and accessible in an easy-access account.