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Retire UK — Retirement decision engine · United Kingdom

Retire UK

Monte Carlo retirement modelling for advisers — built to answer the only question the client actually asks: will the money last?

A retirement projection built on a single average return is a straight line, and a straight line is a promise nobody can keep. Real markets deliver their returns in a sequence, and the sequence matters as much as the average — a poor first decade in drawdown is very hard to recover from.

Retire models that directly. Every scenario is run a thousand times or more against sampled market behaviour, and the output is not a number but a distribution: in how many of those futures does the money hold, and in the ones where it fails, when does it fail?

What the engine actually does

Each run walks the portfolio forward year by year, drawing the client's income, growing what is left according to sampled returns, and applying inflation and tax as it goes. The success rate is simply the share of runs where the portfolio outlives the client.

  • State Pension captured straight from a gov.uk State Pension forecast PDF
  • A minimum of a thousand paths behind every reported result
  • Multi-segment historical bootstrap, including overseas exposure held in sterling
  • Sequence-of-returns risk modelled explicitly, not averaged away
  • Confidence bands, median path, and best and worst cases

Tax is in the loop, not bolted on afterwards

The withdrawal the client asks for is the amount they want in hand. The engine grosses that up through the HMRC bands inside the simulation loop, so the drawdown taken from the portfolio is the real one. Estimating tax after the fact understates the drawdown and flatters the projection.

  • HMRC income tax bands and the personal allowance applied per year
  • Net-to-gross conversion inside the simulation loop
  • Per-year tax shown alongside the income schedule

Portfolios as they really are

A retiree rarely holds one product. Scenarios carry multiple assets — living annuities, discretionary unit trusts, fixed deposits, offshore holdings and cash — each with its own asset mix, drawdown rules and ordering, so the model draws down in the sequence the adviser intends.

  • Drawdown pension, ISA and GIA, fixed deposit, offshore and cash asset types
  • Per-asset equity, bond and cash weightings
  • Drawdown ordering and locked assets
  • Fund-level allocation by SEDOL, classified against IA sectors

Something to hand the client

The output leaves the system as a report an adviser can put in front of a client: the projection, the assumptions behind it, the income by year, and the trailing performance and risk of the funds involved.

  • PDF and CSV export of any completed run
  • Income-by-year schedule
  • Trailing performance and risk statistics per fund
  • GDPR-aligned handling — client identifiers encrypted at rest, subject access and consent withdrawal built in

About this demo

You will be signed into the real product against a sandbox advisory practice — six client plans, each with a Monte Carlo projection that was produced by the actual engine, not written by hand. It is read-only: every screen, projection and report is open, but starting a new simulation or changing a plan is held back with a note explaining what the live system would have done.

Important

The clients, portfolios and projections in this demonstration are entirely fictional and are shown to illustrate how the software works. Nothing here is financial advice, a recommendation, or a forecast of any actual investment outcome.