Financial calculators
Every calculator shows more than the answer: the formula it used, the working step by step, and a chart.
Investing
- AdvancedBinomial modelPrice a European option with a binomial tree, step by step: from the payoff at expiry through the risk-neutral probability to the price today, compared against Black–Scholes.
- BeginnerCompound interestWork out how an investment grows under compound interest, including regular contributions, the effect of inflation, and a year-by-year breakdown.
- IntermediateDiscountingWork out the present value of future cash flows, with the discount factor, a year-by-year breakdown, the effect of inflation and the whole method explained.
- AdvancedInvestment appraisalJudge an investment project on NPV, IRR, MIRR, the profitability index and the payback period, with your own cash flows, charts and every step explained.
Loans
- IntermediateEarly repaymentFind out how much an overpayment on your mortgage could save, and whether shortening the term or lowering the payment serves you better.
- BeginnerMortgageWork out your monthly mortgage payment, the total interest and the LTV, with a full amortisation schedule, overpayments and side-by-side scenarios.
Personal finance
- BeginnerInflationSee how inflation will affect the value of your money: how much you will need, and what today's amount will really buy.
- BeginnerNet salaryWork out how much of your gross salary actually reaches your account, with the contributions and tax broken down step by step.
- BeginnerSavingsSee how much you can save through regular investing, and how inflation affects the result.