Free cash flow forecast calculator. Project monthly inflows, outflows, and balances for 12 months. Identify negative cash months before they happen.
The Cash Flow Forecast Calculator projects your business cash position month by month for up to 12 months. Enter your opening balance, expected monthly inflows, and monthly outflows to see when cash gets tight — or when you'll have surplus to invest.
Cash flow is the lifeblood of any business. Profitable companies go bankrupt due to cash flow problems, and this tool helps you see potential crunches months in advance. Negative balance months are flagged immediately so you can arrange financing or adjust spending.
The forecast supports growth and seasonality adjustments, letting you model realistic scenarios with increasing revenue or varying expense patterns. By modeling multiple scenarios, you can see how changes in payment timing, seasonal revenue dips, or unexpected expenses affect your cash position weeks or months into the future. This proactive approach replaces last-minute scrambling with deliberate planning, giving you time to arrange credit lines or adjust spending before shortfalls materialize.
Most business failures are caused by cash flow problems, not lack of profitability. This calculator gives you forward visibility into your cash position, so you can make informed decisions about hiring, purchasing, and borrowing before a crisis hits. Companies that forecast cash flow monthly are significantly more likely to survive economic downturns and capitalize on growth opportunities when they arise.
Ending Balance[n] = Opening Balance[n] + Inflows[n] − Outflows[n] Opening Balance[n+1] = Ending Balance[n] Net Cash Flow = Inflows − Outflows Cumulative Net = Σ Net Cash Flow
Result: Month 12 ending balance: $81,319
Starting with $50,000, receiving $30,000/month (growing 2%/month) and spending $28,000/month, cash grows steadily. No negative months occur. The 2% growth compounds inflows from $30,000 to $33,471 by month 12.
Cash enters through customer payments, loans, and investments. It exits through payroll, rent, suppliers, taxes, and debt service. The timing mismatch between inflows and outflows creates the cash flow cycle. Managing this cycle is critical — even a single month of negative cash can trigger missed payments, damaged credit, and supplier disruptions.
Start with a conservative base case, then model optimistic and pessimistic scenarios. Update monthly with actual figures. Separate recurring from one-time items. Track forecast accuracy over time to improve your assumptions.
If your forecast shows negative cash within 3 months, start exploring financing options immediately. A business line of credit secured while cash-positive is cheaper and easier than emergency funding during a crisis.
Cash flow forecasting projects future cash inflows and outflows to estimate your cash balance over time. It helps businesses anticipate cash shortages, plan investments, and make informed operational decisions weeks or months in advance.
Profit is an accounting concept (revenue minus expenses). Cash flow is actual money moving in and out. You can be profitable on paper but cash-poor if customers pay slowly, or cash-rich but unprofitable due to depreciation. Cash flow forecasting tracks real money movement.
Most businesses benefit from a rolling 12-month forecast, updated monthly. Short-term (1-3 months) forecasts are most accurate. Longer forecasts are useful for strategic planning but should be revisited frequently as conditions change.
Common causes include: seasonal revenue dips, large quarterly payments (taxes, insurance), customer payment delays, inventory buildup, equipment purchases, and payroll for new hires before revenue catches up. Identifying these in advance is the whole point of forecasting.
Yes. Large one-time expenses (equipment, deposits, annual payments) should be included in the specific month they occur. This is where many forecasts fail — they model only steady-state flows and miss lumpy payments.
Use your actual month-over-month revenue growth from the past 6-12 months as a starting point. For new businesses, be conservative: 0-2% monthly growth. For rapidly growing startups, 5-10% may be realistic but ensure you can support the expenses too.