Investing After 40: Higher Contributions Beat Early Small Savings

A common chart circulating in personal finance, often shared to induce regret about delayed investing, compares two individuals: Sarah and Mike. Sarah starts investing £200 a month at age 25, stops at 35, having contributed £24,000. Mike starts at 35, invests £200 a month until 65, contributing £72,000. At age 65, Sarah's investment is worth approximately £263,000, while Mike's is around £244,000. This chart suggests Sarah, who invested less and stopped earlier, ends up with more, leading many over 40 to believe it's too late for them.

The Misleading Nature of the Chart

While the math in this chart is accurate, it's highly misleading because it assumes both individuals can invest the same amount of money monthly, which rarely happens in real life.

The Reality of Contribution Levels

• At 25: Investing £200 a month is often a significant sacrifice. It might mean delaying a house deposit or a car purchase. Most 25-year-olds who invest typically put away smaller amounts, like £50-£100, which is commendable but still a stretch.
• At 40: The financial picture is usually different. Between ages 30 and 50, most people's incomes roughly double. By 40, finding £500 a month for investment is often feasible, and with some adjustments, even £700-£800 can be palatable.

A More Realistic Scenario

Consider starting at 40 with no prior investments, contributing £500 a month until age 68. In this scenario, you could accumulate around £519,000, surpassing both Sarah and Mike, despite starting 15 years after Sarah and 5 years after Mike. This demonstrates that the power lies not just in early investment, but in the amount invested and the duration it works.

The True Power of Compounding

The common belief that early contributions are overwhelmingly powerful due to compounding is often misunderstood. While compounding is crucial, its effect on small numbers is limited. For someone who started investing at 20 or 22 and never stopped, more than half of their final wealth often comes from contributions made after turning 40.

Compounding is a percentage, and a percentage of a small number is still a small number. For example, 7% of £2,000 accumulated by age 24 is only £140, which is a negligible amount in the grand scheme of a lifetime of investing. The "snowball effect" analogy is accurate, but in your 20s, that snowball is often pea-sized. What makes it grow significantly later is consistently adding larger amounts of "snow" (contributions) when you can genuinely afford to.

Rethinking the Investment Horizon

Many 40-year-olds mistakenly believe they only have 25 years until retirement at 65. However, retirement is rarely a single moment; it's often a slow drawdown over decades. If you retire at 67 and live to 88, the money for your final year of retirement has been invested for nearly 50 years. On average, a pound invested at age 40 works for closer to 35 years, not 25.

The Danger of Premature De-risking

Believing in a rigid 25-year deadline can lead to another costly mistake: de-risking too early. This involves moving investments out of the stock market into less volatile assets that offer lower growth potential. This is akin to changing winter tires on March 1st regardless of the actual weather. De-risking based on a calendar date rather than actual need can turn a 40-year asset into a 20-year one, costing late starters more than the delay itself.

Finding the Money to Invest Later in Life

The question then becomes, where does that £500 a month come from if you don't think you have it?

The Power of Expiring Bills

A significant source of investable income for those in their 40s and 50s comes from bills that expire. Between these ages, many people have several large monthly commitments that simply end, such as:

• Car finance payments
• Childcare costs (often the largest household expense, even more than a mortgage)
• Student loan repayments
• Mortgage terms ending

These expiring bills often disappear into the "noise of life," and spending quietly expands to fill the gap, a phenomenon known as lifestyle inflation. The money, once available, is quickly forgotten.

The most reliable "wealth event" for a late starter isn't a pay rise, but a bill ending. A pay rise requires negotiation, taxation, and then deciding what to do with the remainder. An expiring bill, however, frees up a fixed amount on a predictable schedule, which can be immediately redirected to investments.

Actionable Advice: Create a list of all your financial commitments with end dates. For each, note the month it finishes. Then, proactively set up an automatic increase in your investment contributions for that month, before the money has a chance to be absorbed by other expenses.

Leveraging Tax-Efficient Accounts

When freeing up funds, prioritize investing in tax-efficient accounts. In the UK, this means workplace pensions or personal pension accounts, and ISAs. Most countries have similar versions.

• Tax Relief: The government effectively hands back the tax you've already paid on that money.
• Employer Match: If available, your employer contributes to your pension, further boosting your investment.

These benefits mean your contribution is worth significantly more the moment it lands in a tax-efficient account compared to sitting in a current account. Late starters often feel the urge to chase higher returns, but the "better returns" are often found in these unclaimed, "boring" tax relief accounts.

The Honest Costs of Starting Late

While starting at 40 is far from too late, it does come with certain costs:

1. Reduced Margin for Error: You will experience fewer market cycles. A single bad decision, particularly selling during a downturn, can have a much larger impact. Someone who started at 25 might have lived through three market crashes and learned to ride them out. A late starter might experience their first significant downturn and be tempted to sell, locking in losses. This is an emotional, not mathematical, fragility.
2. Potentially Working Longer: You might need to work a few extra years than initially planned. Working an additional 2-3 years significantly impacts your financial outcome by adding more contributions to your largest pot and reducing the number of years your retirement fund needs to cover.

The Most Expensive Mistake

The most expensive mistake for a 40-year-old is not starting late, but delaying starting. Many people, even those who know they need to invest, spend years "being careful"—reading, comparing options, waiting for a market dip, or waiting to "feel ready." This careful deliberation can be incredibly costly. For example, a couple who delayed investing £500 a month for three years lost out on an estimated £108,000 by age 68, including growth. They spent more money on being careful than most people lose in a genuinely bad investment.

Conclusion: Is It Too Late?

The question "Is it too late?" often implies a missed deadline to become the person in the misleading chart. But that person never truly existed. Investing isn't about a missed deadline; it's about the rate at which you invest and how long that money works for you.

The math doesn't care how old you are; it only cares about the amount invested, the duration, and whether you let it grow. In fact, the 40-year-old who is worried enough to ask this question often ends up wealthier than the 25-year-old who, fueled by optimism, never considers the question. Worry can be a powerful motivator to take action.