Business Cash Flow Calculator
Cash flow is business oxygen. Project cash movements to avoid crunches and optimize working capital with comprehensive flow analysis.
How the Business Cash Flow Calculator works
Enter starting cash, revenue timing, expenses, and payment terms. Generate monthly cash flow projections, identify shortfalls, calculate working capital needs, and model different scenarios.
Profitable businesses fail from poor cash flow. This calculator prevents cash crunches by projecting flows, helping you manage the lifeblood of your business.
How it works
Tutorial
Cash flow is the lifeblood of business—profitable companies fail from poor cash management. Projecting monthly cash movements helps prevent shortfalls, optimize working capital, and make informed decisions about growth investments and financing needs.
You have two options: use the calculator above for automated monthly cash flow projections, or follow this guide to manually forecast your business cash flows.
The Formula
| Component | Formula |
|---|---|
| Beginning Cash | Previous Month Ending Balance |
| Cash Inflows | Collections + Other Income |
| Cash Outflows | Operating Expenses + Capital Purchases + Debt |
| Ending Cash | Beginning + Inflows – Outflows |
Step-by-Step Calculation
Here’s a monthly cash flow projection example.
Step 1: Start with Beginning Cash
Identify cash position at month start:
| Item | Amount |
|---|---|
| Beginning Cash Balance | $45,000 |
| Available Credit Line | $25,000 |
| Total Available | $70,000 |
Calculation: Starting position is $45,000 cash + $25,000 backup
Step 2: Calculate Cash Inflows
Project all money coming in during the month:
| Inflow Source | Amount |
|---|---|
| Customer Collections | $82,000 |
| Previous Month Receivables | $18,000 |
| Other Income | $3,000 |
| Total Inflows | $103,000 |
Calculation: $82,000 + $18,000 + $3,000 = $103,000
Step 3: Calculate Cash Position
Subtract all outflows to determine ending cash:
| Step | Calculation | Result |
|---|---|---|
| Beginning Cash | Starting balance | $45,000 |
| Add Inflows | $45,000 + $103,000 | $148,000 |
| Subtract Operating Expenses | $148,000 – $65,000 | $83,000 |
| Subtract Payroll | $83,000 – $28,000 | $55,000 |
| Subtract Debt Payment | $55,000 – $5,000 | $50,000 |
Final Answer: Ending cash balance is $50,000
What This Means
Ending with $50,000 shows positive cash generation this month. Projecting 3-6 months ahead reveals when cash might get tight, allowing you to arrange financing or adjust spending before problems occur.
Meet the fastest voice-to-text for professionals
WriteVoice turns your voice into clean, punctuated text that works in any app. Create and ship faster without typing. Your first step was Business Cash Flow Calculator; your next step is instant dictation with WriteVoice.
A blazing-fast voice dictation
Press a hotkey and talk. WriteVoice inserts accurate, formatted text into any app, no context switching


Works in any app
Press one hotkey and speak; your words appear as clean, punctuated text in Slack, Gmail, Docs, Jira, Notion, and VS Code—no context switching, just speed with writevoice


Accurate, multilingual, and smart
97%+ recognition, smart punctuation, and 99+ languages so your ideas land first try, built for teams and pros.


Private by default
Zero retention, audio and text are discarded instantly, with on-device controls so you can dictate sensitive work confidently.

