Why inflation matters when funding pension funds

by Aitch, posted in Pension

When planning pension funding, inflation is often acknowledged but not always fully reflected in contribution decisions. Using an average inflation rate of around 5% over recent years helps to illustrate why this matters so much. Even when inflation appears to be easing in the short term, its long-term effect on retirement income can be significant.

Inflation erodes purchasing power. A pension pot that looks comfortable today may buy far less in real terms by the time retirement arrives. At an average inflation rate of 5%, prices double roughly every fourteen years. This means that someone planning to retire in twenty years’ time will need close to twice the income they might intuitively expect, just to maintain the same standard of living. Ignoring inflation risks building a pension fund that appears adequate on paper but falls short in practice.

Inflation also affects investment returns. Pension growth is often discussed in nominal terms, but what really matters is real growth, that is growth after inflation. A fund growing at 6% per year sounds healthy, but if inflation is averaging 5%, the real increase in value is modest. This has implications for asset allocation, contribution levels and the balance between growth and lower risk investments as retirement approaches.

For those making regular contributions, inflation should influence both the starting level and how contributions increase over time. Flat contributions that are not reviewed regularly lose real value year by year. Linking contribution increases to inflation or at least reviewing them periodically in light of inflation trends, can make a material difference to the eventual outcome.

Finally, inflation uncertainty reinforces the importance of flexibility. Retirement may last twenty or thirty years, during which inflation will vary. Building in a margin of safety, through higher contributions or diversified investments, can help protect against prolonged periods of higher inflation.

Taking inflation seriously is not about pessimism. It is about realism. Factoring an average inflation rate of 5% into pension planning leads to better informed decisions and a greater chance that retirement income will meet expectations when it is most needed.

Source:Other | 22-02-2026
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Aitch
I'm Aitch, the Founder and CEO of CIGMA Accounting Ltd. As a Chartered Management Accountant and as a CIMA member, I've spent more than 16 years helping businesses, entrepreneurs, landlords, and individuals with tax planning, accounting, and HMRC compliance. As a chartered accountant in London, I'm passionate about making complex tax matters easier to understand and helping clients make confident financial decisions. Over the years, I've advised start-ups, SMEs, established companies, and high-net-worth individuals across a wide range of tax and accounting matters. My expertise includes Corporation Tax, Self-Assessment, Capital Gains Tax, Inheritance Tax planning, R&D tax relief, capital allowances, international tax, and resolving complex HMRC compliance issues. Whether clients need a business accountant, tax accountant, or strategic tax advisor, my focus is always on delivering practical advice that creates long-term value. One of my specialist areas is Making Tax Digital (MTD). I've worked extensively with businesses preparing HMRC's digital reporting requirements, helping them move to cloud accounting, improve financial processes, and adopt technology that makes compliance more efficient. I regularly speak at Making Tax Digital roadshows, industry events, and educational sessions in collaboration with Zoho Books, sharing practical insights into digital accounting, tax legislation, and the future of the profession. Many business owners looking for the best accounting firm in London are not simply searching for an accountant they're looking for trusted advice, responsive support, and long-term value. That's the approach I've taken in building CIGMA Accounting. My team and I work closely with businesses across London and the UK, providing accounting services, tax advisory, bookkeeping, payroll, VAT, company accounts, and strategic tax planning tailored to each client's goals. Through this website, I share practical guidance on UK taxation, Making Tax Digital, HMRC updates, Corporation Tax, Self-Assessment, and business finance. My aim is to provide reliable, straightforward information that helps business owners understand changing regulations, reduce compliance risks, and make informed financial decisions with confidence.
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