Calculate your ROI quickly and easily with the Gemini 4 Calculator.
Formula
const netProfitPreTax = inputs.finalValueOfInvestment - inputs.initialInvestment - inputs.feesAndExpenses; const taxAmount = netProfitPreTax > 0 ? netProfitPreTax * (inputs.taxRate / 100) : 0; const netProfitAfterTax = netProfitPreTax - taxAmount; const roi = (netProfitAfterTax / inputs.initialInvestment) * 100; const annualizedRoi = (Math.pow(1 + (roi / 100), 1 / inputs.holdingPeriodYears) - 1) * 100; return { netProfit: netProfitAfterTax, roiPercentage: roi, annualizedRoiPercentage: annualizedRoi };Initial Investment
1,000
Final Value of Investment
1,200
Holding Period (Years)
1
Total Fees & Expenses
50
Tax Rate on Gains (%)
20
Use the result to compare providers, request quotes, or send the scenario to a specialist when the numbers matter.
Gemini 4 Return on Investment Calculator projects Net Profit, ROI (Return on Investment), Annualized ROI using Initial Investment, Final Value of Investment, Holding Period (Years), Total Fees & Expenses. Investment returns are never guaranteed — historical averages don't predict future results, and fees, taxes, and inflation reduce real returns. Use this as a planning tool, not a promise of outcome, and consider professional advice for large decisions.
Use this finance calculator to compare scenarios before committing money, time, or a provider conversation.
The estimate combines Initial Investment, Final Value of Investment, Holding Period (Years) and returns Net Profit, ROI (Return on Investment), Annualized ROI.
If the result changes your decision, verify the current quote, rate, eligibility rule, or provider term before acting.
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This calculator provides estimates based on the inputs provided. It does not constitute financial advice, investment recommendations, or tax guidance. Past performance does not guarantee future results. Consult a qualified financial advisor, accountant, or tax professional before making financial decisions.
Reviewed by the CalculateThis.ai editorial team. Updates: check back for latest parameters. Tools are for estimation only — verify with current provider terms.