What happens if your investment returns are two points lower than expected?
A two-point shortfall in return is not a bad year, it is a different plan. Across thirty years of accumulation it roughly halves the final pot; across a drawdown it removes years from how long the money lasts. The uncomfortable part is that charges produce the same effect and are entirely within your control.
- In accumulation: two points over thirty years roughly halves the final value.
- In drawdown: the same shortfall removes years from how long the portfolio lasts.
- The controllable half: charges reduce net return pound for pound and are chosen, not suffered.
- The response: contribute more, work longer, spend less, or accept more risk — there are no other levers.
01 What two points does
Compounding makes small rate differences enormous over long periods. £500 a month for thirty years at 7% produces roughly twice what the same contributions produce at 5%, and the gap is entirely in the compounding rather than in the amounts saved.
In drawdown the effect appears as duration rather than value. A portfolio supporting a given withdrawal for thirty years at one return supports it for materially fewer at a lower one, and the shortfall arrives at the end when there are no options left.
The asymmetry matters: a return shortfall discovered at 55 can be met by contributing more or working longer. The same shortfall discovered at 80 cannot be met at all.
Shows: the final pot at two different net returns, on the same contributions. Ignores: inflation, tax, contribution increases, and the sequence in which returns arrive.
On the defaults above, the worked example shows £416,129. At 7% the same contributions produce £609,985 — the shortfall is £193,856, or 32% of the plan.
Source: FCA consumer information
02 How much of it is charges
Charges reduce net return directly. A total cost of 1.5% against 0.35% is a 1.15-point difference — more than half the two-point gap this post is about, and chosen rather than suffered. That difference compounds exactly as returns do.
This is the part of the answer that people find least interesting and that is most actionable. You cannot make markets return more; you can pay less for access to them, and the effect on the final figure is arithmetically identical.
Transaction costs, adviser charges and platform fees all stack. The relevant number is the total you pay each year, not the headline fund charge, and it is disclosed if you look for it.
03 The four levers, and their honest sizes
A shortfall can be met four ways: contribute more, work longer, spend less in retirement, or take more risk. There is no fifth, and each has a different cost.
Working longer is the most powerful and the least welcome, because it adds contributions, shortens the drawdown period and delays the first withdrawal all at once. A year or two often does more than a decade of extra saving.
Taking more risk is the one that looks like a solution and is not. Raising the equity weighting raises the expected return and widens the range of outcomes, which for someone already behind on a plan increases the chance of being much further behind. It is a reasonable lever at 45 and a poor one at 62.
Source: Plan your retirement income
The honest thing to say about a two-point return shortfall is that half of it is often self-inflicted. Charges of 1.5% against 0.35% is 1.15 points, and that is a decision rather than a market outcome. Fix that first, because it is free. After that there are four levers and no others: save more, work longer, spend less, or take more risk — and the last one is the trap, because raising risk when you are already behind widens the range of outcomes in both directions. At 45 that is a reasonable bet. At 62 it is not.
FAQ
How much difference does two points make?
Over thirty years of accumulation, roughly half the final pot on the same contributions. In drawdown it shows up as duration — the portfolio supports the same withdrawal for materially fewer years.
Are charges really that significant?
Yes. Charges reduce net return pound for pound, so a total cost of 1.5% against 0.35% is a 1.15-point difference — more than half a two-point shortfall, and entirely within your control.
Should I take more risk to make up a shortfall?
Cautiously and not late. Raising the equity weighting raises expected return and widens the range of outcomes, which increases the chance of falling further behind. It is a reasonable lever in your forties and a poor one in your sixties.
Sources
Regulator references
- FCA consumer information · Financial Conduct Authority · 2025The regulator's own consumer guidance on the products discussed here.Last verified: 2026-09-07
- What you, your employer and the government pay · GOV.UK · 2025The 8% minimum split and the qualifying earnings band it applies to.Last verified: 2026-09-07
- Plan your retirement income · GOV.UK · 2025The government's own sequence for turning pension pots into income.Last verified: 2026-09-07
Calculator unit tests · the assertions this page's worked example is checked against, and their last result
Changelog
- 2026-09-07 — initial publish (new format)
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Jordan Reeves
Founder of Talk Through Wealth. A software engineer for over a decade before turning to retirement planning, Jordan built the projection engine after watching family members get fragmented, country-by-country advice that never reconciled. He writes about retirement the way the engine computes it: month-by-month, lifetime-long, and skeptical of any rule of thumb that hasn't been run through the math.