Category Finance

Albert Einstein supposedly called it the eighth wonder of the world. Here's the formula, why time matters more than rate, and how to model it for any goal.

Every SaaS founder eventually faces an investor question they can't answer. This guide is the cheat sheet for every metric — formula, benchmark, and gotcha.

Knowing your break-even point tells you the minimum you need to sell to keep the lights on. Here's how to calculate it and the traps to avoid.

Confusing margin with markup is the most common pricing mistake in retail. The same number means very different things — and it shows up in your P&L.

NPV tells you how much value an investment creates in dollars. IRR tells you the percentage return. Here's how to use both — and which wins when they disagree.

A 5% monthly churn rate sounds small. It means losing 46% of customers in a year. Here's how to measure churn and retention correctly.