🌊 Monthly Money Flow

Cash Flow Calculator

Calculate monthly cash flow, savings rate, annual surplus, and how much money is left after expenses.

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Cash flow calculator guide

This calculator separates fixed expenses, variable spending, debt payments, and automatic saving so you can see whether your monthly money flow is healthy.

What changed in this version

  • Separates fixed and variable costs.
  • Calculates savings rate and annual free cash flow.
  • Grades cash flow as risky, tight, healthy, or excellent.

Calculation method

Free cash flow = income − expenses − automatic saving

Savings rate includes automatic saving plus remaining free cash flow when it is positive.

FAQ

Is free cash flow the same as savings?

Not exactly. Free cash flow is what remains after bills and planned saving. It can become extra saving, debt payoff, or discretionary spending.

What is a good savings rate?

For normal personal finance, 10–20% is a common target. FIRE plans often require much higher rates.