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1Scan for outdated or missing drivers - takes under a minute2Clear out junk files and repair common Windows errors3Fix the driver behind crashes, sound loss and screen glitchesA useful cash-flow forecast shows when money is expected to enter and leave your business—not just whether it is profitable on paper. Start with the cash in your bank, estimate receipts and payments in the periods they will actually occur, and carry each closing balance into the next period. Then compare a base case with scenarios for higher borrowing payments, changing supplier costs, or both.
What a cash-flow forecast tells you
A cash-flow forecast tracks the timing of cash receipts and payments. That timing can differ from accounting revenue and expenses: a sale may be recorded before the customer pays, and a bill may be incurred before its due date. A business can therefore show sales or profit while still facing a cash shortage when payments fall due.
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Customer collection habits, supplier terms, payroll dates, seasonal sales, tax remittances, annual bills, and loan-payment dates all affect the cash balance. The aim is to spot when cash may fall below zero or below an operating buffer you choose—not to guarantee that a particular balance will occur.
Choose the forecast periods and horizon
Monthly periods are a practical starting point for an operating forecast. Use weekly periods, or another shorter interval, when monthly totals could conceal a near-term shortage—for example, if payroll is due before a large customer payment arrives. Choose a horizon long enough to include the rate reset, supplier-price change, seasonal low point, or funding decision you need to plan for. There is no single horizon that fits every business.
Set up the spreadsheet
Use one row per period and keep assumptions separate from the cash-flow calculations. A simple layout is:
| Column | What to enter |
|---|---|
| Period | Month, week, or other interval, with dates where useful. |
| Opening cash | Cash available at the start of the period. |
| Cash receipts | Customer collections and other expected cash inflows. |
| Cash payments | Supplier payments, payroll, operating costs, taxes, assets, owner payments where relevant, and debt service. |
| Net cash movement | Cash receipts minus cash payments. |
| Closing cash | Opening cash plus receipts minus payments. |
In spreadsheet terms, if opening cash is in column B, receipts in C, and payments in D, the net movement can be calculated as =C2-D2 and closing cash as =B2+C2-D2. The next row’s opening cash should link to the prior row’s closing cash, such as =E2. Adapt cell references to your own layout.
For an Australian business, business.gov.au provides a cash-flow statement template and guidance; its guidance says to label estimates and state whether amounts include or exclude GST. Apply the relevant tax treatment consistently for your jurisdiction.
Gather the records that drive the forecast
Start the first period with the actual cash balance in your bank accounts that is available to the business. Then map when cash normally moves, using records rather than relying on invoice dates alone.
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- Customer invoices, collection history, payment terms, and known seasonal patterns.
- Supplier invoices, purchase orders, contracts, quoted price changes, and payment terms.
- Payroll dates and amounts, rent, subscriptions, insurance, utilities, and annual charges.
- Tax or GST remittance dates and other statutory payments relevant to your business.
- Planned asset purchases, expected grants, tax refunds, loan proceeds, or owner contributions—include an inflow only when it is genuinely expected.
- Loan statements, agreements, due dates, and lender notices.
Keep sales assumptions distinct from cash collection timing. For example, estimate the period in which a customer is likely to pay, not simply the period in which you issue the invoice. List payments in the period they are expected to leave the account. Business Victoria emphasizes that cash flow is about timing and recommends accurate estimates of when inflows and outflows occur.
Forecast receipts and payments without hiding timing
Receipts
Estimate customer receipts from available sales and collection history, adjusted for known changes and seasonality. Record other real inflows separately so you can see what depends on trading and what depends on a one-off event.
Payments
Break payments into useful categories rather than placing everything in one expense line. Include supplier purchases, wages, operating expenses, taxes, asset purchases, relevant owner payments, and loan repayments. Schedule each by its expected payment date or period. A bill due annually can create a cash dip even if the underlying cost looks small when averaged across the year.
Make changing input costs visible
Separate fixed costs from variable costs. Fixed costs are less directly tied to sales volume over the forecast period; variable costs change with volume, supplier prices, or both. For every material input that may change, record the current assumption, the alternative cost, when the change is expected to take effect, and when the resulting bill is likely to be paid.
If a purchase cost depends on units sold or produced, link it to the volume assumption instead of burying the change in a general expense line. Base an increase on a supplier quote, contract clause, purchase order, or a clearly labeled planning assumption. Avoid applying an unexplained across-the-board percentage. Replace estimates with confirmed prices when available.
Model a variable-rate loan from its actual terms
Gather the outstanding balance, the loan’s index or base rate, contractual spread, any caps or floors, reset dates and frequency, payment due dates, and the lender’s revised payment schedule. Use the actual payment amount in the period it is due; do not assume that every lender recalculates payments on the same timetable or with the same formula.
The U.S. Small Business Administration notes that payment amounts may change when the rate changes on a variable-rate 7(a) loan. That is specific to the program and is not a universal rule for every loan. Check your agreement and lender notices for the terms that apply to your borrowing. For a fixed-rate loan, keep the scheduled payment unchanged unless the agreement or lender gives you a reason to alter the assumption.
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Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Compare a base case with downside scenarios
Keep the assumptions for each case identifiable—either in separate scenario columns or separate spreadsheet tabs. Change only the assumptions that define each scenario so you can see what is driving a different cash result.
| Case | Assumptions to change |
|---|---|
| Base | Current known supplier costs and the loan payment currently expected. |
| Rate case | Use the lender’s revised payment schedule from the relevant rate reset. |
| Input-cost case | Change only the affected material supplier costs, starting in the period the new price is expected to apply. |
| Combined downside | Apply both the rate and input-cost changes. If sales or customer payment timing may also change, add that as a separately explained assumption. |
These labels are a practical way to organize the comparison, not a prescribed official framework. For every case, check:
- The lowest closing cash balance and the period in which it occurs.
- The first period cash falls below zero or below your chosen operating buffer.
- The size of any cash gap and how many periods it lasts.
A buffer is a planning threshold you choose for your business, not a legal or universal reserve requirement. Scenario testing helps show whether a proposed change could improve cash flow and where contingency may be needed.
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Update the forecast against actual cash
At the end of each period, replace estimates with actual receipts and payments. Compare the two, note the reason for material differences, and revise future assumptions. A customer paying late, a supplier changing terms, or a seasonal pattern differing from expectations may matter more than a small arithmetic variance.
Choose a review cadence that matches how quickly cash moves in your business. Some retailers or contractors may need daily or weekly attention; another business may be able to review less often. The forecast is a living planning aid, not a guarantee.
Questions to ask while reviewing cash
- What is my cash position?
- How much do I need to pay in tax and super commitments?
- How much does my business have available to spend?
- Has my business improved?
These questions reflect prompts in an Australian small-business cash-flow resource; adapt tax terms and obligations to your jurisdiction.
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