The management decision

Know the lowest cash balance, the week it occurs and the action needed before the buffer is breached.

A profitable company can run short of cash while its income statement still looks healthy. Customers pay after payroll is due, inventory is purchased before orders are delivered, and a new project consumes working capital before it produces receipts. A 13-week cash flow forecast makes those timing differences visible. Its purpose is to help management decide what to collect, pay, defer or finance while there is still time to act.

The annual budget remains important, but a monthly average can hide an uncomfortable Friday. A rolling weekly forecast complements the budget by showing identifiable cash movements. It is useful for growing businesses as well as companies facing liquidity pressure: growth itself can create a funding requirement.

1. Establish the cash that is actually available

Start with reconciled bank balances at a consistent cutoff. Identify restricted deposits, customer funds that cannot be used freely and amounts already committed. Keep undrawn borrowing facilities separate from bank cash. A facility is useful only if it remains available when needed and its conditions can be met.

Use a simple weekly calculation: opening cash plus receipts, less payments, equals closing cash. The following week opens with that closing balance. Show financing draws and repayments explicitly rather than using a balancing figure that automatically removes every shortfall. Where accounts use different currencies, retain the underlying currency detail and state the exchange-rate assumption used for the management view.

2. Build receipts and payments from evidence

For customer receipts, begin with outstanding invoices, contractual terms, collection history and the account owner's latest conversation. A due date is not always a reliable payment date. Separate confirmed collections from expected receipts on orders that have not yet shipped. Concentrated customer exposure deserves individual attention because one delayed payment can change the whole forecast.

For payments, map payroll, taxes, rent, loan service, suppliers and committed capital expenditure to their expected settlement weeks. Distinguish unavoidable obligations from spending that management can genuinely reschedule. Avoid spreading every monthly expense evenly across four weeks: that smooths the model while concealing the very timing risk it should reveal.

Record an owner and supporting evidence for each material assumption. Sales owns the collection conversation; procurement checks supplier commitments; operations explains production requirements; finance reconciles the combined view. Disagreements should be resolved through evidence, not by silently choosing the most optimistic number.

3. Read the cash trough, not just the ending balance

The illustrative chart compares two possible paths for weekly closing cash. All amounts are in thousands of U.S. dollars and are hypothetical. The base case stays above a management cash floor of 100. Under delayed collections, cash falls below that floor in week five and reaches 55 in week seven, before recovering later.

Illustrative scenarios, not company results or a prediction. The cash floor is a management assumption.

The implied buffer gap is 45 in week seven. A positive week-thirteen balance does not solve that earlier problem. Equally, breaching a management buffer is not the same as reaching zero cash or breaching a loan covenant. Those thresholds must be assessed separately. The useful question is whether a feasible action can deliver cash before the first affected week.

4. Translate the gap into a funded action plan

Suppose management can bring forward 20 of receipts through a customer-agreed payment arrangement, reschedule 15 of discretionary investment and secure 10 of available financing. Together, those actions would cover a 45 gap if their timing and availability are confirmed. This is a worked example, not a recommendation to delay contractual obligations or assume borrowing will be approved.

• Collections: confirm the amount, payer, agreed date and responsible relationship manager.

• Spending: assess the operating impact and obtain agreement before changing a commitment.

• Funding: verify conditions, documentation, drawdown timing and repayment capacity.

Keep the original downside case visible alongside the action-adjusted version. Otherwise management can confuse a proposed solution with cash already secured. If an action fails, the underlying exposure should remain immediately apparent.

5. Separate timing differences from permanent changes

Each week, replace the completed period with actual receipts and payments. A receipt that moves from week two to week three is a timing variance. A customer dispute that reduces the collectible amount is an amount variance. They call for different responses: one changes scheduling, while the other may change profitability and the financing requirement.

Do not roll every missed receipt into the following week without investigation. That creates a forecast which always promises recovery but never explains why collections are late. Track repeated delays by customer and compare forecast accuracy for the nearest weeks separately from the more uncertain outer weeks.

6. Test growth before committing cash

A large order may require materials, overtime and freight before the customer pays. Model the incremental cash cycle before accepting the commercial terms. A deposit, phased deliveries or a supplier arrangement may reduce the peak requirement, but each option has a commercial cost or constraint. Compare the cash profile as well as the reported margin.

The 13-week view does not replace a longer investment model. If a new plant or international expansion produces cash beyond the forecast horizon, connect the weekly plan to a monthly medium-term forecast. Otherwise the business may solve a short-term trough while overlooking a larger structural funding need.

7. End the weekly review with decisions

A concise review should answer four questions: what changed, when cash is lowest, which actions are confirmed, and what requires escalation. Assign one owner and a deadline to each action. Add a new thirteenth week so the horizon keeps moving. Preserve prior versions to understand whether assumptions are improving.

The output is a short management record, not simply another spreadsheet: minimum cash, week of minimum cash, buffer gap, committed funding and unresolved actions. That discipline also makes conversations with lenders and investors more credible because the requested amount is tied to a visible operating requirement.

How Lev Partners helps

Lev Partners' CFO services support cash flow planning, budgeting and management reporting. We help connect the forecast to working-capital decisions and financing needs, with clear assumptions and management accountability. Contact our team to discuss a practical 13-week cash flow process for your business.

Your CFO advisory contact

Cenk Sönmezyalçın — Board Advisor, Lev Partners. Cenk contributes a corporate CFO perspective to Lev’s financial management advisory. Speak with him about cash planning, management reporting and your finance priorities.

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