See what everyday spending could be worth in the future. Compare the money you spend today with what it could become if saved or invested instead.
Choose a common spending habit or enter your own. The calculator shows the total cash spent, the potential future value, and the opportunity cost gap between spending and building wealth.
Enter your spending habit to see the future wealth impact.
Equivalent to 0 months of income
These examples use a 20-year period and a 5% annual return. They are estimates, not guarantees, but they show why repeated spending deserves attention.
| Habit | Cost per year | Cash spent over 20 years | Potential value at 5% |
|---|---|---|---|
| Daily coffee at £3.50 | £1,278 | £25,550 | About £42,400 |
| Weekly takeaway at £25 | £1,300 | £26,000 | About £43,100 |
| £60/month subscriptions | £720 | £14,400 | About £23,800 |
| £200/month car upgrade | £2,400 | £48,000 | About £79,300 |
Normal savings calculators show growth. This tool shows the difference between spending the money and redirecting it towards your future.
See the total cash spent compared with the potential future value if that same money was saved or invested instead.
The opportunity cost gap shows the growth you may miss out on by letting small habits continue for years.
Inflation reduces future purchasing power. The real terms toggle shows what the future figure may feel like in today’s money.
A coffee, subscription or takeaway does not look expensive in isolation. The real impact appears when the habit repeats every week or month for years. This calculator helps you decide which spending is genuinely worth it and which spending quietly slows your future down.
An opportunity cost calculator shows what you give up by choosing one option over another. In this case, it compares spending money now with saving or investing that same money for the future.
No. Investment returns are not guaranteed and can go down as well as up. The result is an estimate based on the annual return you choose.
Inflation reduces the buying power of money over time. Showing a future figure in today’s money makes the result more realistic.
The annual ISA limit is £20,000 for the 2026 to 2027 tax year. ISA rules can change, so always check current guidance before making decisions.
It depends on your situation. Many people prioritise an emergency fund first, then consider longer-term saving, investing, pensions or ISA allowances once short-term security is in place.
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