FinFormulas

Insights & How-Tos

Actionable finance advice paired with calculators so you can decide with confidence.

Calculators

How Much Should You Save by Age 30, 40, or 50?

Benchmarks you can actually use — with a free savings calculator.

Debt payoff

Snowball vs. Avalanche — Pay Off Debt Faster

Pick the method you’ll stick with and run the numbers.

Rent vs buy

Should You Rent or Buy in 2025?

Compare monthly cost, equity, and opportunity cost with our tools.