Business and real estate calculators

Price a product, judge a project and check a loan with the measures lenders and investors use.

Which business calculator should I use?

Use more than one measure

No single number tells the whole story. A project can pay back quickly and still add little value, or show a high IRR on a small amount of money. Lenders and investors read several measures side by side for that reason. Benchmarks also vary widely by industry, so compare your results with businesses like yours rather than with a general rule.

Frequently asked questions

What is the difference between margin and markup?

Both describe the same profit from two angles. Markup is profit as a share of cost. Margin is profit as a share of the selling price. A 50% markup gives a 33.3% margin, so mixing them up leads to underpricing.

Should I trust NPV or IRR?

When they disagree, NPV is usually the safer guide because it measures value added in money terms at your own cost of capital. IRR is useful for a quick comparison but can mislead for projects of different size or timing.

What discount rate should I use?

Many businesses use their weighted average cost of capital, then add a margin for riskier projects. If you do not have one, test a range of rates and see how sensitive the result is.