Savings goal calculator

Use this calculator to estimate how long it could take to reach a savings target based on your current balance, monthly contributions, and expected interest. You can also test an annual increase to your monthly saving amount and add a time horizon to check whether your target looks achievable on your schedule.

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What this assumes
  • Interest rate stays constant for the whole projection.
  • Contributions are added at the end of each month.
  • Compounding follows the frequency you choose.
  • No withdrawals, tax, fees, or missed contributions.
Use this as a planning estimate rather than a guaranteed outcome.

Your details

Enter your target, current balance, regular saving amount, and interest assumptions.

Enter the amount you want to reach.
Use the balance you already have set aside.
Add the amount you expect to save each month.
Use your expected annual rate before tax.
Choose how often interest is added to the balance.
Increase your monthly saving amount once each year.
Leave blank to calculate the time needed. Enter a horizon to check if you reach the goal by that point.

Results

Time to reach goal
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Total contributed
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Your total added savings
Total interest earned
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Estimated growth from interest
Final balance
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Balance at the target point
Savings timeline —
Checkpoint Contribution Interest Balance
How this calculator works
  • Starts with your current savings balance.
  • Adds interest using your chosen compounding frequency.
  • Adds monthly contributions, with optional yearly increases.
  • Stops when the goal is reached or your chosen horizon ends.
Calculate to see your savings plan
Enter your assumptions and press Calculate. Results appear here without shifting the layout.

How to use this savings goal calculator

A simple way to plan towards a target amount.

  • Enter the savings balance you already have and the target you want to reach.
  • Add the amount you plan to save each month and any annual increase you expect.
  • Choose an interest rate and whether interest compounds monthly or yearly.
  • Leave the time horizon blank to estimate the time needed, or set a horizon to test whether your target is achievable by then.

Assumptions

Keep these limits in mind when interpreting the result.

  • The calculator assumes a constant annual interest rate for the whole period.
  • Monthly contributions are treated as consistent and made at the end of each month.
  • Optional contribution increases are applied once per year to the monthly amount.
  • It does not account for tax, account fees, access restrictions, or inflation.
  • Real savings accounts can change rate over time, so rerun the numbers when rates change.

Worked example

A realistic example to sense-check the calculator.

  • Savings goal: £10,000.
  • Current savings: £1,500.
  • Monthly contribution: £250.
  • Interest rate: 4.5% with monthly compounding.
  • Contribution increase: 3% per year.
  • On these assumptions, the goal is reached faster than saving £250 flat with no interest.

FAQs

Common questions about savings targets and timelines

What happens if I leave the time horizon blank?

The calculator works out how many months it may take to reach your goal under your current assumptions.

What does the time horizon override do?

It checks the balance at a chosen number of years so you can see whether your goal is reached by that date and how far ahead or behind you may be.

Should I choose monthly or yearly compounding?

Choose the option that best matches the account you are modelling. Many savings accounts calculate or credit interest monthly, while some fixed products credit yearly.

Can I use this for an ISA or regular saver?

Yes. It is a planning tool for any savings pot where you want to model a starting balance, regular contributions, and a rate of return.

Does it include inflation?

No. Results are shown in nominal pounds, so the real spending power of the final balance could be lower if inflation stays high.

Why is interest earned lower than I expected?

Interest depends on both the rate and the size of the balance over time. A lower starting balance means much of the growth comes later in the plan.

What if I will increase my savings over time?

Use the contribution increase field to model an annual rise in the monthly amount you save, such as after a pay increase.

Is this a guaranteed forecast?

No. Savings rates, contribution patterns, and access to funds can all change, so treat the result as an estimate for planning.

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