Part of the Finance collection — 4 tools available
Cash Flow Calculator
Calculate your monthly cash flow by comparing income to expenses. Identify surplus or deficit and see how much you can save or invest each month.
About This Calculator
Positive cash flow is the foundation of financial stability — it means you earn more than you spend each month, creating a surplus that can be saved, invested, or used to pay down debt. Without tracking it, it's easy to wonder where your money goes month after month while making no progress toward your goals. Even high earners can have negative cash flow if lifestyle expenses consistently exceed income. Our cash flow calculator breaks down your income and expenses to show your monthly surplus or deficit, your savings rate, and where adjustments are needed.
The Formula Behind This Calculator
Net = Inflows - Outflows Operating = Revenue - OpEx Free = Operating CF - CapEx.
Understanding the math helps you verify results and make better decisions for your project.
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How to Use
- 1Enter your monthly take-home (after-tax) income.
- 2Fill in each expense category with your average monthly spending.
- 3Review your monthly cash flow and savings rate.
When to Use
- →Building a monthly budget and identifying areas to cut spending.
- →Checking if you have enough surplus to start investing or increase savings.
- →Preparing for a major financial change like buying a house or having a child.
Tips
- ✓Aim for a 20%+ savings rate — 10% minimum for financial stability.
- ✓Track expenses for 2-3 months to get accurate numbers — most people underestimate spending.
- ✓If you have a deficit, start by cutting the largest expense category first for the biggest impact.
FAQ
What is a good savings rate?
Financial experts recommend saving at least 20% of take-home income. The FIRE (Financial Independence) community targets 50%+. Even 10% is a strong start if you are currently at zero.
Should I include irregular expenses?
Yes. Average annual expenses (car insurance, holidays, medical) into monthly amounts. For example, $1,200/year car insurance = $100/month.
What if I have a negative cash flow?
A deficit means you are accumulating debt or depleting savings. Cut non-essential spending first, then look at increasing income. Even small monthly deficits compound into major problems.
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