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Service Cash Flow Calculator

The Service Cash Flow Calculator estimates ending cash for a selected period by combining opening cash, customer collections, operating payments, capital purchases, and debt-related cash flows. It focuses on when money enters and leaves the bank account rather than when revenue or expenses are recognized for accounting purposes.

Service businesses can use the result to anticipate a cash shortfall, test the effect of delayed collections, or decide whether a planned purchase fits within available liquidity. Because one period can conceal timing issues inside the month, businesses with tight cash should also prepare a weekly schedule of expected receipts and payments.

Service assumptions

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Result
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Estimated ending cash balance
Net operating cash flow—
Net change in cash—
Cash coverage of outflows—

1. Enter opening cash
Use the bank and cash balance available at the start of the forecast period.

2. Add expected collections
Enter customer payments expected to clear during the period, regardless of the invoice date.

3. List operating payments
Combine payroll, contractors, rent, software, taxes paid, and other operating cash outflows.

4. Include capital and financing flows
Add equipment or other capital spending. Enter borrowing as positive and debt repayment as negative.

5. Check ending liquidity
Review the ending balance and cash change; a negative result signals the need to adjust timing, spending, or financing.

Net operating cash flow = Cash receipts − Operating cash outflows
Net change in cash = Net operating cash flow − Capital spending + Net borrowing or debt repayment
Ending cash = Opening cash + Net change in cash

A positive debt entry represents new borrowing; a negative entry represents net repayment. The model excludes noncash expenses such as depreciation.

What the result means

The main result is the estimated cash balance remaining at the end of the selected period.

A positive ending balance does not guarantee every payment can be made on time if receipts arrive late within the period.

Given: $25,000 opening cash, $42,000 in customer receipts, $35,500 in operating outflows, $4,500 in capital spending, and no net debt flow.

Calculation: Net operating cash flow = $42,000 − $35,500 = $6,500. Net cash change = $6,500 − $4,500 + $0 = $2,000. Ending cash = $25,000 + $2,000 = $27,000.

Result: Estimated ending cash is $27,000.

Cash rises by $2,000 even after the capital purchase, but the timing of collections should still be monitored.

Why are sales different from cash receipts?

Sales may be invoiced before or after payment. This calculator uses only cash expected to be collected during the selected period.

How do I enter a loan repayment?

Enter net debt repayment as a negative number. New borrowing should be entered as a positive number.

Should owner distributions be included?

Yes, when they will reduce cash during the period. Include them in operating outflows or adjust the debt/financing field consistently.

What does cash coverage mean here?

It compares opening cash plus receipts with operating and capital outflows. It is a simple period-level liquidity indicator, not a formal debt-service ratio.

Can this replace a full cash flow statement?

No. It is a planning estimate. A formal statement classifies operating, investing, and financing cash flows under applicable accounting rules.