// multi-utility computation suite · offline · instant · precise
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finance.retirement-tax-efficiency Calculator
Calculates the tax efficiency of a retirement planning strategy from pre-tax and after-tax return, accounting for all applicable taxes. Tax-efficient investing can add 0.5–1.5% per year in after-tax return — achieved through asset location, tax-loss harvesting, and holding period management.
Inputs
Savings
Rate of charge flow (A). I = V/R. Above ~100 mA through the body can be lethal. Fuses protect against overcurrent.
Contrib
Reference formula or conversion factor shown for context.
Rate
Reference formula or conversion factor shown for context.
Years
Reference formula or conversion factor shown for context.
Results
total contributions
The combined total across all inputs and components.
nest egg
The projected total savings or investment portfolio value at the target date — the fund you will draw from in retirement.
growth
The absolute increase in value over the period. Growth = final value minus initial value.
growth multiple
Final value divided by initial investment. A 3x growth multiple means the investment tripled. Also called MOIC (multiple on invested capital).