Projections

How projections work

The projection engine steps forward month by month from your latest real balances. Each month it applies income (with growth and tax), budget spending, contributions and payments, and interest — compounded monthly from the annual rate you entered. Net surplus carries forward as the next month's opening balance.

Because the engine runs on your device, the chart redraws instantly as you change an assumption — no server round-trip.

Time horizons

Pick the timescale that matches the question: short-term (12 months) for cash flow planning, medium-term (around 5 years) for goals like a deposit, or long-term (up to 40 years) for retirement. The same engine powers all of them.

What-if sliders

Drag a contribution or payment slider and watch the projection redraw in real time: pay £100 more onto the card and the payoff date moves; shift it into the ISA instead and the curves trade places. When a set of adjustments is worth keeping, save it as a named scenario (see Scenarios).

Pension projections

Projections → Pensions focuses on retirement: your contributions, employer contributions and assumed growth compound over decades, so small changes — a 1% employer match increase, retiring two years later — show their full long-range effect.

Assumptions that feed the model

Projections respect the assumptions you've set across the app: income growth per source, UK tax and NI bands for gross income, inflation by category, recorded interest-rate changes, and credit minimum payment rules (percentage of balance or a fixed floor, whichever is greater) so a "minimum payments only" scenario is realistic.

If you hold accounts in other currencies, a toggle switches the projection between your base currency and each account's native one, and an exchange-rate sensitivity row shows the outcome with rates 10% worse and 10% better than you've configured — so you can see how much of the plan rests on the exchange rate.