Quick guide
How to use this calculator
- Enter the cash flows, values, rates, timing, or portfolio assumptions named in the fields.
- Use one consistent period and currency convention throughout the scenario.
- Read the calculator-specific model limits before interpreting the result.
Calculation method
Calculation method
Solve the starting contribution from the future value of an initial investment plus annually escalating monthly contributions.
Model, simulation, root, square-root, and compounding outputs are estimates and are visibly marked approximate.
Worked example
Worked example
A target of 20,000 from 5,000 over 60 months can be solved with 6% nominal return and a 3% annual contribution increase.
Solve the starting contribution from the future value of an initial investment plus annually escalating monthly contributions.
Supported inputs
Precision and limits
Visible input limits
Inputs support up to 12 decimal places and lists support at most 1,200 rows. Iteration and simulation bounds are displayed in their fields.
International scope
No exchange, tax system, reporting standard, currency, fund rule, trading calendar, or market convention is selected automatically.
Decision boundary
Outputs are entered scenarios, not valuations, forecasts, risk limits, executable trades, suitability decisions, or recommendations.
Calculator-specific assumptions
Contributions occur at month end and increase after each completed 12-month block; investment returns are constant and spread evenly across months.