// multi-utility computation suite · offline · instant · precise
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finance.investment-tax-drag Calculator
Calculates the annual tax drag on investment portfolio management returns from the effective tax rate applied to income, dividends, and capital gains. Tax drag is the return reduction from taxes on investment income — a 30% tax rate on 7% gross returns reduces the net return to approximately 4.9%.
Inputs
Principal
Upfront cost — the negative cash flow at time zero in NPV/IRR analysis.
Rate
Reference formula or conversion factor shown for context.
Years
Duration of the process. Make sure units match the rate inputs (seconds, minutes, or hours).
Results
initial investment
The upfront capital deployed at time zero. This is the negative cash flow from which all future returns are measured.
future value
What your investment will be worth at the end of the period. The power of compounding: $10,000 at 8% for 30 years grows to about $100,000.
total gain
The combined total across all inputs and components.
CAGR
Reference formula or conversion factor shown for context.