What bugs me is this kind of advice given on this website:
'Jack is 30. He makes a £50 contribution to his pension pot every month and earns 5% investment growth each year.
When Jack comes to retire at age 60, he’ll have been contributing to his pension for 30 years. That’s a total of £18,000 in contributions. When he comes to take the money out, his pension pot value will have increased to £41,000. More than double!'
Sounds great. But if you check the Bank of England inflation calculator you'll realise than thirty years ago £50 was equivalent in value to £103 now. More than double!
Forgetting about the compound interest on both your investments and inflation is a more useful rule of thumb guide to how much you want to pay into your pension over how long than claiming the power of compound interest but not thinking about the corroding power of inflation.