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£1 million sounds like a massive amount of money, and today it absolutely is. But if you're retiring in 20, 30 or 40 years, the better question is: what will £1 million actually be worth by then?
That is the bit I think people miss when they set a retirement target. If inflation averaged around 2.5% over the long term, £1 million in 30 years would have spending power closer to roughly £477,000 in today's money. In 40 years, it would be closer to £372,000. That's not a prediction of future inflation, but it shows why simply saying "I need £1 million to retire" doesn't tell us enough.
Housing, bills, tax, energy, food and healthcare all matter too. Someone entering retirement mortgage-free will be in a completely different position from someone still renting or paying a mortgage.
The latest UK Retirement Living Standards estimate that a single person currently needs around £32,700 a year for a moderate retirement and around £45,400 for a comfortable one. For a couple, those figures rise to around £45,400 and £62,700. These figures don't include housing costs, which makes that mortgage-free question even more important.
So where does £1 million fit into this?
The 4% Rule
This is where the famous 4% rule normally comes in. The basic idea is that if you had a £1 million portfolio, you could withdraw around 4% in the first year £40,000 and then increase that amount with inflation over time.
It's a useful guideline, but I wouldn't treat it as a guaranteed retirement formula. Your outcome depends on how markets perform, inflation, fees, how long you live and when market crashes happen. A major fall in the first few years of retirement can be far more damaging than a crash later on because you're withdrawing money while the portfolio is down.
That doesn't mean the 4% rule is useless. It just means retirement needs flexibility.
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Why I Like Building Income Early
This is one reason I personally like building an income-producing part of my portfolio while I'm still investing.
Dividends aren't free money and I'm not interested in chasing crazy yields just because they look attractive. Total return still matters. But while I'm accumulating wealth, I can reinvest the income I receive.
Those dividends buy more investments, which can then generate more dividends, which can then be reinvested again. Over long periods, that can become a useful compounding engine alongside the money I'm putting in myself.
I also like watching my yield on cost increase over time. It isn't something I would use to decide whether an investment is currently cheap or expensive, but it shows me how much income my original capital is now producing.
The bigger benefit is choice. When I eventually reach retirement, I might have pension income, ISA withdrawals, dividends and potentially the State Pension. I don't necessarily have to rely entirely on selling investments every month.
You can experiment with this yourself using my Investment Calculator, which shows how investing and reinvesting over long periods can change the numbers.
