Research published by Money Marketing in August 2025 found that UK adults associate drawing down their pension savings with anxiety (26%), fear (18%) and guilt (15%) far more often than excitement (15%), security (17%) or relief (10%). That’s a striking gap for a milestone that’s supposed to be something to look forward to, and it’s usually not really about the money itself – it’s about not being able to see it clearly. A cashflow model exists specifically to close that gap.
What a cashflow model actually does
It takes what you already have – pensions, savings, investments, property, other assets – along with what you spend and what you’re likely to need in future, and projects it forward, often to the end of your life, under a set of stated assumptions about growth, inflation and withdrawals. The output is a visual, whole-of-life picture of your finances rather than a single static figure. It’s worth being clear about what it isn’t: cashflow modelling isn’t itself a regulated activity, and the FCA is explicit that any outcome it shows can’t be guaranteed. What the FCA does expect is that the assumptions behind it are reasonable and can be explained, and that the model gets reviewed regularly rather than treated as a one-off answer.
You can see our video on cashflow modelling here.
A straight line isn’t how markets actually behave
Most cashflow tools, including many still in common use, apply a single average growth rate every year of the projection – say 5% – which produces a smooth, reassuring line that real investment returns never actually follow. Some tools now offer Monte Carlo, or stochastic, modelling as an alternative, running thousands of randomised return sequences to show a range of plausible outcomes rather than one straight path. It isn’t yet standard across the industry, but it’s a meaningful difference worth asking about: a single-line projection tells you what happens if returns behave exactly as assumed, every single year, which they won’t.
Test-driving decisions before you make them
The genuine strength of a good model is letting you try things out without committing to them first. Retiring two years earlier than planned, taking a larger income in the first few years of retirement, funding a sabbatical, covering school fees, stepping back from work for a period, or a future care need later in life – all of these can be modelled against your actual finances, so you’re deciding from a clear picture rather than a guess. It works in both directions too: plenty of people discover they’ve been more cautious than they needed to be, and that their plan supports more than they assumed.
Sustainable income, properly stress-tested
A model can show whether your current lifestyle is actually sustainable over the long run, what a higher withdrawal rate does to how long your money lasts, and how the plan holds up against inflation, a market downturn, or an unexpected cost landing at the wrong time. For a sense of scale, the Pensions and Lifetime Savings Association puts a moderate retirement income at £31,700 a year for one person or £43,900 for two, and a comfortable one at £43,900 and £60,600 respectively, as of its most recent 2025 figures – useful benchmarks to model your own plan against rather than numbers to aim at blindly. We’ve also written separately about how withdrawal decisions affect how long your pension actually lasts, which sits well alongside this.
What happens to what you leave behind
Guilt was the third most common feeling in that Money Marketing research, and it often comes from not knowing whether spending more now would come at a cost to family later. A model can project the effect of lifetime gifting and show what’s likely to remain as part of your estate, which tends to turn a vague worry into a specific, answerable question. If gifting a property is part of that picture, we’ve covered the tax and practical implications of that separately, since it carries its own set of considerations beyond what a cashflow model alone will show.
Let’s build your own picture
We work with clients across Poole, Bournemouth and the wider Dorset area to build and regularly review cashflow models that reflect their actual circumstances, not a generic assumption. If you’d like to see your own finances mapped out this way, get in touch and we’re happy to have a no-obligation conversation.
This article is for general information only and does not constitute financial advice, which should be based on your individual circumstances. The information is aimed at retail clients only. All information is correct at the time of writing (September 2026) and is subject to change in the future.
A pension is a long-term investment not normally accessible until 55 (57 from April 2028). The fund value may fluctuate and can go down, which would have an impact on the level of pension benefits available. Past performance is not a reliable indicator of future performance.
The tax implications of pension withdrawals and estate planning will be based on your individual circumstances. Thresholds, percentage rates, and tax legislation may change in subsequent Finance Acts.
The Financial Conduct Authority does not regulate cashflow planning or cashflow modelling.