Profit measures economic performance; cash flow determines whether the company can make payroll. A 13-week direct cash forecast turns invoices, payroll dates, tax obligations, debt payments, and planned purchases into a weekly operating tool.
Forecast actual cash timing
Start with the bank balance that is truly available. List expected customer collections by week—not invoice date—and cash outflows by their due or intended payment dates. Separate committed payments from optional or deferrable spending.
Use customer-specific assumptions for large receivables. A generic percentage can hide that one late payer creates most of the shortfall.
Prioritize the cash conversion cycle
Shorten the time between doing work and collecting money: quote clearly, request deposits where appropriate, invoice immediately, confirm receipt, resolve disputes fast, and follow a documented collection cadence. On the purchasing side, use agreed terms without damaging critical supplier relationships.
Inventory and work in progress absorb cash. Track how long money remains tied up before a sale and collection, especially when growth requires buying ahead.
Review forecast variance every week
Each week, replace forecasts with actual cash, move missed collections to realistic dates, update new commitments, and explain the largest variances. The forecast becomes valuable when it learns from misses.
Set action triggers for the lowest projected balance: freeze discretionary spending, intensify collections, adjust purchasing, negotiate terms, or arrange financing before the shortage becomes an emergency.
Worked Example
A profitable contractor expects $90,000 of invoices this month but only $35,000 is likely to collect before a $42,000 payroll and $18,000 supplier payment. The weekly forecast exposes the timing gap early enough to collect deposits, reschedule purchases, or arrange working capital.
Owner Checklist
- Forecast 13 weeks by collection and payment date.
- Separate taxes and restricted cash.
- Rank large receivables by probability and owner.
- Update actuals and variances weekly.
- Set actions for minimum-cash thresholds.
Frequently Asked Questions
Why can a profitable business run out of cash?
Sales may collect after expenses are due, growth may consume inventory and labor, debt principal uses cash, and profit includes noncash or timing items.
Should every bill be paid as late as possible?
No. Use agreed terms while protecting discounts, supply continuity, credit, and relationships.
How accurate must the forecast be?
It should be decision-useful and improve over time. Track misses instead of pretending uncertain collections are guaranteed.
Use a weekly cash-control cycle
Monthly financial statements arrive too late for many cash decisions. Build a rolling thirteen-week forecast with beginning cash, expected customer receipts, payroll, taxes, debt service, inventory or materials, fixed overhead, and ending cash. Update actual results weekly and move missed receipts forward instead of leaving them in the week originally promised.
Separate timing problems from profitability problems. A profitable sale financed for a customer may consume cash today and return it over months; an inventory purchase may reduce cash without becoming an immediate expense. That distinction matters in dealerships, finance companies, construction, and other businesses where working capital moves before reported profit. Use the forecast to schedule purchases, accelerate collections, negotiate terms, or defer discretionary spending before the account becomes critical.
- Reconcile available bank cash.
- Confirm the next two payroll and tax obligations.
- Review receivables by expected collection date.
- Challenge large or unusual outflows.
- Assign an owner and deadline to every cash action.