Free Financial Calculators for Americans
Whether you're planning retirement, evaluating a business, or deciding if a stock is worth buying — get clear answers without the jargon.
Americans face a set of financial decisions that sound complicated but have clear, calculable answers. Should you take the 401(k) match and how much will it compound to by retirement? Is the small business you're considering buying actually worth what the seller is asking? When you're looking at individual stocks — whether a large-cap S&P 500 name or a small regional company — is the price fair given the earnings and risk? These questions are what FinanceSheep is built to answer.
The US stock market context is baked into every calculator. The S&P 500 has historically returned around 10% annually before inflation, and that figure — the expected market return — is the foundation of the CAPM formula that tells you what return any individual stock should deliver based on its risk. The 10-year Treasury yield (currently around 4.5%) is the risk-free baseline that every discount rate gets built on top of. These defaults are set for you — just enter your numbers.
For American business owners, the federal corporate tax rate of 21% (set by the 2017 Tax Cuts and Jobs Act) means debt costs less after tax than the headline interest rate suggests. The WACC calculator uses this to find the true blended cost of capital for a business you're buying or funding. For retirement planning, the math is even simpler: $10,000 invested today at a 7% real return becomes roughly $76,000 in 30 years. The Future Value calculator runs that in seconds — try different contribution amounts, rates, and time horizons.
One of the most common decisions Americans face is whether to buy a small business. The US has over 33 million small businesses and thousands change hands every year. Valuing one the right way — using discounted cash flow analysis to convert future earnings into today's dollars — is exactly what the DCF calculator is built for. Input the expected cash flows, a realistic discount rate, and a terminal value, and you'll get a defensible number you can take into negotiation.
Every calculator on this site is free, works without an account, and is built for real decisions — not finance class. If you want to save your work or unlock full worked answers to practice questions, a Pro account is available, but everything core is free.
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Use the Future Value calculator. Enter your current balance as PV, your expected annual return (7% is the S&P 500 long-run real average), and the years until retirement. The result is what your pot will be worth. Then work backwards with Present Value to see how much you need today to hit your target.
Use the DCF calculator. Enter the annual free cash flows you expect the business to generate, a terminal value (typically 4–6x final-year cash flow for a small US business), and a discount rate of 10–15% depending on the risk. If the result is higher than the asking price, the deal makes financial sense.
Use the CAPM calculator with rf = 4.5% (US 10-year Treasury), the stock's beta (available on any brokerage platform), and rm = 10% (long-run S&P 500 return). The result is the minimum annual return you should demand. Compare it to what the stock is actually expected to return to decide if it's worth the risk.
Everything is free — no account required
Every calculator on this site is free to use without creating an account. All results are calculated in your browser — nothing is sent to a server. If you want to save your calculations, track your learning progress, or access full worked answers to practice questions, a Pro account is available — but everything core is and always will be free.