Set the asset-class mix once per unique fund name. Changes apply to all instances of that fund across wrappers and platforms (e.g. Vanguard Global Tracker held in your ISA at HL and SIPP at AJ Bell — both update together).
Where your money sits today and what your guaranteed-income floor looks like. The same fund can appear on multiple platforms — each row in the Assets table is a separate holding.
Each asset has a wrapper. Tax behaviour: ISA tax-free · SIPP 25/75 (UFPLS) or PCLS upfront · GIA CGT + dividends · Rental yield-only (held forever, or set a disposal year) · Cash interest (PSA) · Gold-LT sovereigns/Britannias CGT-free. Assets are grouped by platform. For DB pensions, add them to the Incomes table instead — they're income streams, not drawable capital.
| Asset | Platform | Owner | Wrapper | Class | Value | Ret % | Yld % | Order | Sale yr |
|---|
Annual amounts in today's £. Taxable income flows into the income tax calc. Current age: — auto-updates linked income start years (State Pension at age 67).
| Source | Category | Owner | Annual (real) | Real g% / yr | Start yr | End yr | Taxable |
|---|
Extra spending beyond your normal SWR. For a recurring expense (e.g. care costs), set End yr > Start yr.
| Description | Amount / yr (real) | Start yr | End yr |
|---|
Annual contributions added to a specific wrapper. Use for modelling accumulation years before retirement, or ongoing top-ups (e.g. £20k/yr ISA subscriptions while still working).
| Description | Wrapper | Annual £ | Start yr | End yr |
|---|
Roughly 70% of UK retirees will need some long-term care, typically £30-50k/yr for 2-4 years late in life. This toggle injects a lumpy expense in the final years of your horizon (Off = no care cost; Light = £40k × 3 yrs; Heavy = £60k × 4 yrs). For a couple, double these amounts.
Permanent reductions in real spending from a given year onward — e.g. mortgage paid off, downsizing, transitioning from active to slower retirement. Multiple step-downs compound (a 20% then 15% cut leaves you at 0.85×0.80 = 68% of original spend). Step-downs also rebase the GK / Vanguard withdrawal-rate baseline so those strategies don't try to undo the cut.
| Description | Year | Reduction % |
|---|
Side-by-side comparison with common retirement-planning rules of thumb. These are general guidance, not personalised financial advice — your specific circumstances (risk tolerance, other income, dependants, health, etc.) may justify deviating from any of them.
Manual rebalance uses the risk band's class targets (or your Custom %). Allocation only finds the best class mix at your current settings — fast. Allocation + settings also searches strategy/mode/Bed&ISA. Both produce three picks (best Yr-1 SWR, best lifetime net, best balanced) and a scatter chart. Save first if you want a backup before applying.
Inverts the formula using your current weighted real return, horizon, and an iterative gross-up via the UK tax engine using your simulation's stream mix. PWR assumes constant real return forever (no volatility) — treat as a planning floor, not a sequence-of-returns proof. SWR drains the portfolio to zero over the horizon. Real-life tax is non-linear, so cross-check the result against the main KPIs.
Approximate split. Streams are attributed by removing each in turn and rescaling to the total, so band-interaction effects (PA taper, dividend-allowance crossover, CGT spilling into higher rate) can shift attribution slightly between streams.
Each line is a complete scenario with its own binary-searched SWR. "Your current setup" reflects whatever options you have selected; the others are fixed reference cases that ignore your step-downs and SIPP-mode choices for a clean comparison. Real GBP throughout.
| Scenario | Yr 1 | Yr 15 | Yr 30 | Avg net / yr | Lifetime tax | Lifetime net |
|---|
Single-variable swings around your current setup, ranked by impact on lifetime real net spending. Bars to the right = positive impact (more spending); bars to the left = negative. The widest bars are the assumptions worth most scrutiny.
Applies UK IHT to the projected terminal estate at the end of your horizon. Nil-rate band £325k + Residence NRB £175k per person (RNRB assumes you leave a home to direct descendants; tapers £1-per-£2 over £2m). Joint household doubles both. Lifetime gifts, trusts, and BPR/APR are not modelled.
Replays your portfolio against the actual sequence of REAL (inflation-adjusted) returns from a chosen historical decade. Returns are applied uniformly across all your assets — the test is sequence risk, not asset-allocation specifics. If your plan survives the worst decade in living memory, you can have more confidence in it. Source: Shiller (US equity proxy), UK gilts approximations, UK CPI; conservative interpretation for a 60/40 blended path.
Year-by-year instructions in priority order. Each line: amount · fund · wrapper · platform · owner. Assets with £0 draw that year are skipped.
gf_new = (gf + priceRet) / (1 + priceRet). Fiscal drag: tax bands are frozen in nominal terms and erode each year in real terms by your inflation assumption. Joint mode computes tax PER PERSON using the owner attribution on each asset and income line (each spouse gets their own PA, CGT allowance, and bands). For asymmetric households this is the realistic model; for symmetric splits it equals the old "double the bands" approximation. SIPP: three modes — UFPLS blends 25/75 on every withdrawal; PCLS upfront takes the 25% lump sum (= 25% × starting SIPP) tax-free first, then 100% taxable; PCLS already taken assumes the tax-free 25% was crystallised in the past — the current SIPP balance is the post-PCLS pot, so all withdrawals are 100% taxable. Vanguard CDR uses the canonical rule: target = balance × initial WR, clamped to [-1.5%, +5%] year-over-year. UK tax 2024/25: Personal Allowance £12,570 (tapered £1-per-£2 above £100k income), basic rate 20% to £50,270, higher 40% to £125,140, additional 45%. CGT: £3,000 allowance, 18%/24% (post-October 2024). Dividend allowance £500 at rates 8.75/33.75/39.35%. PSA £1,000/£500/£0 by band. Monte Carlo samples per-year additive return shocks (perfect-correlation across assets) and re-runs the full simulator including taxes, State Pension and lumpy expenses. The starting-rate-for-savings (£5k at 0%, tapered £1-per-£1 by non-savings income above PA) IS modelled. PCLS is capped at the £268,275 Lump Sum Allowance per person (since April 2024); users with LTA protections will have a higher cap. For DB pensions, use the Incomes table. Not financial advice; tax rules change and your circumstances will differ.