Finance

Calculate break-even units and sales revenue from fixed costs, price and variable cost, with worked examples and common errors.

Learn how the 50/30/20 budget divides take-home pay, calculate each category and adapt the percentages when costs do not fit.

P&L means profit and loss. Learn what the statement contains, how profit is calculated and how to read its main...

Download a free P&L spreadsheet and learn how to enter revenue, cost of goods sold and operating expenses correctly.

Calculate an emergency-fund target from essential expenses, income risk and insurance, then choose where to keep the cash.

Make a monthly budget from real income, bills, variable costs and goals, then track it with a simple weekly review...

Estimate 2026 US self-employment tax from net profit, Social Security wages and filing status, with formulas and limits explained.

Plan income, bills, spending and savings week by week with a free weekly budget template and a simple rollover method.