Investing Calculators

Compounding, fee drag, and portfolio comparison calculators.

• Rental Property Cash-on-Cash Return CalculatorCalculate cash-on-cash return, cap rate, and cash flow for a rental property investment.
• Bond Yield to Maturity CalculatorCalculate the exact yield to maturity of a bond given its price, coupon rate, face value, and time to maturity.
• CD Ladder CalculatorCalculate returns and maturity schedule for a CD ladder strategy with customizable rungs and rate assumptions.
• Coast FIRE CalculatorCalculate the Coast FIRE number — the lump sum you need invested today so that compound growth alone reaches your retirement target, with no further contributions required.
• Compound Growth CalculatorCalculate the future value of your investments with compound interest and regular contributions. See how time, rate, and compounding frequency affect your wealth.
• Dividend Reinvestment (DRIP) CalculatorSee how reinvesting dividends compounds your wealth over time. Compare a DRIP strategy against taking dividends as cash with a year-by-year simulation.
• Dollar-Cost Averaging vs. Lump Sum CalculatorCompare investing a lump sum immediately against spreading it via dollar-cost averaging. See the final value difference, opportunity cost, and month-by-month breakdown.
• Expense Ratio Lifetime Cost CalculatorQuantify the lifetime dollar cost of high expense ratios versus low-cost index funds. See exactly how much fee drag costs you over your entire investment horizon.
• Financial Independence Number CalculatorCalculate your Financial Independence (FI) number using the 4% rule and safety margins for early retirement planning.
• Margin Interest Cost CalculatorCalculate the interest cost of borrowing on margin, break-even required return, and net gain after interest.
• Options Break-Even CalculatorCalculate the break-even price, max profit, max loss, and P&L at expiration for long call and put options.
• Portfolio Rebalancing Bands CalculatorCalculate how far your asset allocation has drifted from its target, whether a rebalance is triggered by your chosen band, and the exact trade amounts needed to realign your portfolio.
• Safe Withdrawal Rate CalculatorCalculate the maximum annual withdrawal your portfolio can sustain over your retirement horizon, based on expected return, inflation, and additional income sources.
• Sharpe Ratio CalculatorCalculate the Sharpe ratio and Sortino ratio to measure risk-adjusted portfolio performance versus the risk-free rate.