Inputs

Household composition

IndividualCouple

Income

Monthly income (take home pay) (£)

Monthly expenses (excluding mortgage) (£)

Monthly gross salary (£)

Current assets

ISA assets (£)

Non-ISA assets (£)

Growth assumptions

ISA interest rate (%)

Non-ISA interest rate (%)

Forecast period (years)30 years

Advanced inputs

Property & mortgage

Home value (£)

Remaining mortgage balance (£)

Remaining mortgage term (years)

Mortgage interest rate (%)

Home appreciation rate (%)

Pension

Contribution type

Current pension pot (£)

Workplace personal contribution (% of pensionable pay or £)

Employer contribution (% of pensionable pay)

Pension interest rate (%)

Pension tax relief

SIPP contribution (£ per month, net)

Forecast assumptions

Inflation rate (%)

Wage increase rate (%)

Extraction rate (%)

Recompute latency: 5.6ms

Financial independence forecaster

Model your path to financial independence with scenario-based projections

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Financial independence (FI) date

Aug 2060

Years until FI

34.3

Passive income at FI (3.9%)

£31,803

Savings rate at FI

36.6%

Passive income

This compares projected annual withdrawal capacity against annual inflation-adjusted spending (including mortgage) to highlight your FI crossover.

Financial independence (FI) achieved year: 2060
Mortgage paid off year: No mortgage balance in forecast
Coverage ratio in 2056: 0.77x
Withdrawal minus total spending in 2056: £-6.9k

Insights

Your projection is short of full coverage by £6.9k in 2056; closing this gap through higher contributions or lower annual spending is the highest FI lever here.
At the current settings, FI is reached in 2060; focus on keeping expenses growth below income growth to bring that date earlier.

Assumption: monthly surplus is directed to tax-efficient ISA contributions first, up to your selected annual ISA allowance (£20,000); any remaining surplus is invested outside ISA wrappers.

Potential passive income vs projected expenses

Metric	Current	1Y	5Y	10Y	20Y	FI
Liquid runway (years)	0.0y	0.1y	0.9y	2.4y	7.8y	25.7y
FI coverage ratio	0.00x	0.01x	0.03x	0.09x	0.31x	1.00x

Assets

Stacked areas show how ISA, non-ISA, pension, and home equity contribute to your overall net worth path.

Projected total assets (2056): £783.6k
Largest component at end of forecast: ISA (£577k)
Growth from first to final year: 321.4x

Insights

ISA is your largest projected asset at £577k (73.6% of total), so changes affecting this bucket are currently the biggest net-worth driver.
Your leading asset is an investment bucket, which supports FI flexibility; keep contributions and risk assumptions aligned with your target timeline.

Assumption: ISA, non-ISA, pension, and home values grow using constant annual rates from Inputs (before inflation adjustments shown in separate real-value metrics).

Asset breakdown over time

Metric	Current	1Y	5Y	10Y	20Y	FI
	£0	£2,301	£15,962	£46,718	£188,556	£815,454
Pension pot	£0	£2,052	£12,035	£29,397	£87,923	£268,748
Home equity	£0	£0	£0	£0	£0	£0
Total net worth	£0	£4,354	£27,997	£76,115	£276,479	£1,084,202
Real net worth (today's £)	£0	£4,268	£25,357	£62,441	£186,063	£550,243

Savings

This breaks down monthly cash flow into income, core outgoings, and the surplus allocated between ISA and non-ISA investing.

Active income at FI (post-tax / pre-tax): £4.2k / £4.5k
Total committed monthly outflow at FI: £-2.6k
Total monthly surplus at FI: £1.5k
Total monthly pension contribution at FI: £282

Insights

Your projected surplus is £1.5k per month (about 439.0% of annual take-home), making surplus retention one of your strongest controllable FI drivers.
You currently model ISA contributions at £20k yearly; reaching this cap consistently before adding non-ISA funds improves tax efficiency on the path to FI.

Assumption: monthly income is modeled as take-home pay; monthly surplus shown here is allocated to ISA first (up to the ISA cap) and then to non-ISA.

Monthly cash flow allocation

Metric	Current	1Y	5Y	10Y	20Y	FI
	£1,529	£1,575	£1,773	£2,055	£2,762	£4,177
Living expenses	-£1,351	-£1,378	-£1,492	-£1,647	-£2,008	-£2,649
Mortgage	£0	£0	£0	£0	£0	£0
	£103	£106	£120	£139	£186	£282
	£0	£197	£281	£408	£754	£1,528
	£0	£12	£91	£269	£1,089	£4,720

Assumptions

This section documents the calculation assumptions currently active in your model. Where possible, values are pulled directly from your current input panel settings.

ISA-first contribution rule: monthly surplus is allocated to ISA up to the annual ISA limit, then overflow goes to non-ISA.
Couple-mode tax efficiency: in couple mode, the model assumes both ISA allowances are fully used before non-ISA investing.
FI asset scope: FI withdrawals are based on ISA + non-ISA assets only (pension and home equity are excluded).
Non-ISA tax at extraction: realized gains are modeled with UK basic-rate CGT (18%) after the annual exempt amount.
FI test basis: annual withdrawal at your extraction rate (3.9%) must cover inflation-adjusted annual spending, including mortgage where relevant.
Projection horizon for FI checks: FI timing is evaluated on a dedicated 40-year run, even if your visible chart horizon is shorter.

Assumption	Current setting	How it is used in calculations
Household mode	Individual	Controls household-level tax and allowance assumptions in projection math.
Forecast horizon	30 years	All projections run monthly over this period.
Monthly take-home income baseline	£1.5k/month	Starting post-tax income used for monthly surplus calculations.
Monthly living expenses baseline	£1.4k/month	Core spending before mortgage, inflated through time.
Wage growth	3.0%	Used to grow active income over time.
Inflation	2.0%	Used to grow spending and convert real-value metrics.
ISA growth rate	7.0%	Applied to ISA balances in asset and gain projections.
Non-ISA growth rate	3.5%	Applied to taxable investments outside ISA wrappers.
Pension growth rate	5.0%	Applied to pension pot growth over the forecast.
Home appreciation rate	3.0%	Used to project home value and home-equity series.
ISA annual contribution cap	£20k/year	Monthly surplus is allocated to ISA first up to this cap, then to non-ISA.
Surplus allocation order	ISA first, then Non-ISA	Each month, surplus is directed to ISA up to the allowance limit before any excess is assigned to non-ISA investments.
No negative monthly investing	Floor at £0 for investable surplus	When monthly cash flow is negative, the model does not create negative ISA/non-ISA contributions.
Workplace pension personal contribution	5.0% of pensionable pay (£2.1k/month)	Contributes to pension accumulation according to selected contribution type.
Employer pension contribution	3.0%	Added from pensionable pay into pension projections.
SIPP contribution (net)	£0/month	Paid from take-home cash flow and added to pension investing.
Pension tax relief	20.0%	Applied to SIPP contributions when calculating pension inflows.
Mortgage terms	£0 balance, 3.8% rate, 0 years	Drives monthly mortgage cash outflow and payoff timing.
FI extraction rate	3.9%	Annual ISA + non-ISA withdrawal rate used for FI checks and passive-income projections.
Non-ISA withdrawal tax treatment	18.0% CGT rate with £3k annual exempt amount	At extraction, CGT is applied only to realized gains on non-ISA withdrawals, assuming basic-rate CGT treatment.
Extraction income-tax context	Basic-rate CGT assumption (no salary at extraction)	Withdrawal tax treatment assumes no active salary income at extraction point, consistent with basic-rate CGT modeling.
FI asset basis	ISA and Non-ISA only	Pension and home equity are excluded from FI withdrawal coverage.
FI spending basis	Inflation-adjusted annual expenses, including mortgage where applicable	FI is reached when projected withdrawal covers projected annual spending.
FI evaluation window	Up to 40 years (independent FI run)	FI date and related FI metrics are evaluated using a dedicated 40-year projection, separate from chart display horizon.
Current model outcome under these assumptions	FI: 2060; Mortgage paid off: No mortgage balance in forecast	High-level outcome resulting from the above parameter set.