Cash Flow Forecast Calculator
Closing balance over the next months.
Enter your values
Enter the opening cash in $.
Enter the monthly inflow in $.
Enter the monthly outflow in $.
Enter the months to project you are working with.
Enter the inflow growth in %.
Results update instantly as you type — no submit needed. Your values are remembered on this device, and the shareable link reopens the calculator with exactly these numbers.
- Closing balance
- $63,680.34
- Lowest balance
- $51,405.00
- Net change
- $3,680.34
- Cash negative?
- No
| Month | In | Out | Balance |
|---|---|---|---|
| Month 1 | $42,000.00 | $47,000.00 | $55,000.00 |
| Month 2 | $44,100.00 | $47,000.00 | $52,100.00 |
| Month 3 | $46,305.00 | $47,000.00 | $51,405.00 |
| Month 4 | $48,620.25 | $47,000.00 | $53,025.25 |
| Month 5 | $51,051.26 | $47,000.00 | $57,076.51 |
| Month 6 | $53,603.83 | $47,000.00 | $63,680.34 |
Quick answer
Cash flow forecasting projects the closing balance each month from expected inflows and outflows.
Closing = opening + inflow − outflow
At a glance
| What it does | Closing balance over the next months. |
|---|---|
| Category | Business |
| Inputs needed | Opening cash, Monthly inflow, Monthly outflow, Months to project, Inflow growth |
| Main output | Closing balance |
| Formula | Closing = opening + inflow − outflow |
| Cost | Free — no sign-up, no download |
How to use the Cash Flow Forecast Calculator
- 1Enter your opening cash balance.
- 2Enter typical monthly inflow and outflow.
- 3Set the projection window and growth.
Inputs explained
- Opening cash($)
- Enter the opening cash in $.
- Monthly inflow($)
- Enter the monthly inflow in $.
- Monthly outflow($)
- Enter the monthly outflow in $.
- Months to project
- Enter the months to project you are working with.
- Inflow growth(%)
- Enter the inflow growth in %.
Worked example
Using the values the calculator loads with:
Inputs
- Opening cash60000 $
- Monthly inflow42000 $
- Monthly outflow47000 $
- Months to project6
- Inflow growth5 %
Results
- Closing balance$63,680.34
- Lowest balance$51,405.00
- Net change$3,680.34
- Cash negative?No
Frequently asked questions
Why watch the lowest point?
You need financing before the trough, not at the end of the year.
Should VAT be included?
Yes — treat it as an outflow in the month you pay it.
What do I need to enter into the Cash Flow Forecast Calculator?
Just 5 values: opening cash, monthly inflow, monthly outflow, months to project, inflow growth. Every field starts with a realistic example, so you can change one number at a time and watch the result update instantly.
How does the Cash Flow Forecast Calculator work out the answer?
Cash flow forecasting projects the closing balance each month from expected inflows and outflows. It applies the formula Closing = opening + inflow − outflow and shows the working so you can check each step by hand.
Is the Cash Flow Forecast Calculator free, and do I need an account?
It is completely free with no sign-up, no download and no usage limit. Everything is calculated in your browser, so the numbers you type never leave your device.
Results are estimates for general information. For medical, legal, structural or financial decisions, confirm with a qualified professional.