Skip to content
IfSketchChange the question. See what happens.

Money

What If I Started Saving 10 Years Earlier?

What if I started saving 10 years earlier?

Time does more to a monthly standing order than a slightly higher rate does, which is easy to say if the time is still ahead of you and annoying if it is not. This experiment is not a scolding. It places two sketches side by side: the same monthly amount, the same illustrated rate, one running for the years you still have, the other given extra years at the front. Defaults are £200 a month, 20 years from now, 10 extra years, and 4%. The earlier pile is larger because more contributions went in and because any illustrated compounding had longer to work. Neither pile is a forecast. Starting now is the only lever this page can still pretend to offer.

Change this

Results update as you move the controls.

200£
20years
10years
4%

Optional. Not guaranteed.

Your result

£65,455

gap between the two sketches

£24,000 extra put in · £41,455 extra illustrated growth

Starting now (20 years)
£73,355

£48,000 put in

10 years earlier (30 years)
£138,810

£72,000 put in

Extra contributions
£24,000
Extra illustrated growth
£41,455

Not guaranteed

What does that mean?

The same £200 a month, illustrated at 4% — not guaranteed — is £73,355 over 20 years and £138,810 if it had also run for 10 years before that. The gap of £65,455 is mostly extra deposits (£24,000) plus extra illustrated growth (£41,455). The earlier start cannot be booked from today; a larger monthly amount can.

At a glance

  • Start now£73,355
  • 10 years earlier£138,810

Compare

Later contributions£48,000
Earlier contributions£72,000
Gap£65,455Deposits plus illustrated growth

Compare scenarios

The extra years are extra deposits first

Ten years of £200 a month is £24,000 of contributions before anyone mentions interest. A lot of the famous “start early” gap is that stack, not magic. The model is honest about it: you will see contributions and illustrated growth separately. If the rate is zero, the whole gap is deposits.

Compounding is a long fuse

When a rate is applied, the earlier scenario compounds those extra deposits for the whole longer horizon. That is the school-book result people remember from posters. Real rates move, products charge fees, and people withdraw money. The Bank of England’s explainers on interest are the right tone: a percentage is a price that changes.

You cannot start in 2014 from here

If the earlier start is unavailable, the useful comparison is a higher monthly amount from today, or a rising contribution each year. Those experiments sit next door. Treating a missed decade as a personality flaw is not a calculation and is not what this page is for.

How we calculated this

Two monthly annuities are compared. “Later” runs for laterYears. “Earlier” runs for laterYears + extraYears, at the same monthly amount and the same annual rate / 12, compounded monthly. This experiment provides estimates for educational purposes and is not financial advice. Actual results vary depending on rates, fees, taxes, inflation and individual circumstances. The rate is an illustration and not guaranteed. The extra years cannot be recovered; the comparison is educational.

Go further

A curated rabbit hole from this question. Each link is a real experiment, not a random suggestion.

  1. 01 · MoneyWhat If I Increased My Savings Every Year?
  2. 02 · MoneyWhat If I Saved £100 Every Month?
  3. 03 · Your LifeWhat If You Lived to 100?
  4. 04 · MoneyWhat If I Saved £5 Every Day?
  5. 05 · MoneyWhat If I Saved Every £1 Coin?

You might also like

Your LifeEditor's pick

What If You Lived to 100?

Count the years, weeks, weekends and birthdays between now and a hundred — as a remainder, not a warning.

Explore

MoneyTry this

What If I Saved £5 Every Day?

Turn a small daily amount into a running total over the years, with optional illustrated interest.

Explore

Still curious?