Wealth Tools / Sustainability Model
Wealth Runway Calculator
Estimate how long accessible wealth may support a lifestyle. Separate illiquid wealth, protect a reserve, add recurring income and stress-test spending against return and inflation assumptions.
Stress scenarios
01
Build the runway
Use current annual amounts. The model compounds each year in sequence.
Results update automatically as assumptions change
What this model includes
Each year applies the selected return, adds that year’s recurring income, subtracts annual spending and any scheduled major expense, then updates income and spending for the next year. The protected reserve remains outside runway capital.
