Cash flow in a field service company: paying out before the customer pays
Updated 16 October 2026
A field service company pays its technicians and buys its parts before the customer pays the invoice. The gap between those two dates is where cash runs short, even in a year that shows a profit. A 13-week cash forecast lists every week's expected receipts and payments, so the owner sees the low weeks before they arrive. This page covers why the gap opens, how the forecast is laid out, which fixed charges belong in it and which signs point to a cash problem.
Four reasons cash runs short
- Payroll comes first. Technicians and crews are paid on payday whether or not the customers have paid.
- Materials are bought ahead. Parts, equipment, stock and subcontractors are paid for before the job is billed or collected.
- Receivables stretch. Commercial accounts and project work often pay weeks after the invoice, and the cash sits with the customer in the meantime.
- Demand moves with the seasons. Heating and cooling, landscaping, roofing, pest control and maintenance all have peak months and slow months, and the slow months still carry payroll and rent.
A plumbing contractor pays $9,000 for materials before a commercial job starts. The crew's $12,000 of wages for the job goes out on the next payday. The job is billed at $30,000 on 60-day terms. The company carries $21,000 of its own cash for about two months before the customer pays, and the $9,000 margin on the job arrives at the end of that wait. The figures are an illustration.
How a 13-week forecast is laid out
Each row is one week. The row starts with the cash in the bank on Monday, adds the customer payments expected that week and takes away each payment due. The result is the ending cash, which becomes the next week's starting figure. Thirteen weeks is one quarter. That is far enough ahead to see a tax payment or a slow month, and near enough that the receipts can be estimated from open invoices and the booked schedule.
| Week | Starting cash | Cash in | Payroll | Materials | Subcontractors | Fleet | Rent | Taxes | Debt | Ending cash |
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | $85,000 | $42,000 | $24,000 | $9,000 | $3,000 | $2,500 | $4,000 | $0 | $1,800 | $82,700 |
| 2 | $82,700 | $31,000 | $0 | $11,000 | $6,000 | $1,500 | $0 | $0 | $0 | $95,200 |
| 3 | $95,200 | $38,000 | $24,000 | $7,000 | $2,000 | $2,500 | $0 | $14,000 | $1,800 | $81,900 |
| 4 | $81,900 | $27,000 | $0 | $8,000 | $4,000 | $1,500 | $0 | $0 | $0 | $95,400 |
The table above runs four of the thirteen weeks for a company with a $24,000 payroll every second week. Week 3 ends at $81,900, the lowest of the four, because payroll and a $14,000 tax payment land together. The owner sees that low point three weeks ahead and can move a supplier payment or chase an open invoice before it arrives. The figures are an illustration.
Fixed charges that belong in the forecast
Some payments stay the same whatever the week's sales. Rent, loan payments, insurance and vehicle leases are the usual ones. A franchised service business adds the brand's minimum fees. A royalty is the fee a franchisee pays the franchisor, usually a share of sales. When a brand sets a dollar minimum, that minimum is a fixed line in a slow month.
Window Genie charges a 7% license fee and a 2% marketing fee twice a month, with a minimum of $800 at each collection. Over a year the Window Genie minimum comes to $12,000 of license fees and $7,200 of marketing, $19,200 in all, or $1,600 a month. Window Genie's bottom quarter averages $130,448 of sales and pays 14.72% in brand fees, against 9.00% in the top quarter. A Window Genie owner below the minimum enters $800 twice a month in the forecast, whatever the sales.
Signs of a cash problem
| What the owner sees | What it usually points to |
|---|---|
| Every payroll is a worry | Pricing, the labor model, collections or working capital needs work. |
| Supplier bills are paid late | Jobs show a profit on paper and the cash arrives too late to pay for them. |
| Invoices over 60 days old keep growing | Collections are slipping. |
| The owner checks the bank balance daily | No one has a view of the weeks ahead. |
| A truck repair causes alarm | The company has no reserve or plan for vehicles and equipment. |
| More sales bring less cash | Working capital is too thin for the growth. |
Storm Guard's contract requires $90,000 a year of local advertising from year three. The Storm Guard page reports a median franchisee marketing spend of $42,948, which is $47,052 under the requirement, and the shortfall is payable into the brand fund. Spread over twelve months, that is $3,921 a month. A Storm Guard owner who has not budgeted it finds a payment in the forecast that the profit and loss never showed as a plan.
What this means for an owner
Payroll and materials go out before customers pay. A 13-week forecast shows each week's starting cash, receipts, payments and ending cash. The lowest week in the forecast is the one to plan for. Fixed charges, including any franchise minimums, go in at their full amount every week they fall due. Growing receivables, late supplier bills and daily balance checks are the signs to act on.
Have the forecast built and kept current
Averan builds the 13-week forecast from the closed books, updates it each week and walks the owner through the low points. The fractional CFO service page describes that work. For a closer look at seasonal cash in heating and cooling, see the HVAC finance page.
Where to next
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What happens next
Reading about it and having it done are different things. Here is exactly what happens if you want the second one.
- The call takes thirty minutesYou describe the business and where the numbers are letting you down. We give you an expert view of your situation, and what we would start with. There is no pitch deck.
- We look at the fileYou give us read access to the books as they are. We come back with what is wrong, what it will take to fix, and whether the answer is bookkeeping, controller work, or something else.
- We send a written scope and a priceIt lists what we do each month, what you get, the date it lands and the fee. We agree it before anything starts, and it does not change unless you agree.
- We take over the books and close the first monthWe set up access and systems and enter the opening balances. The first close lands on the date in the scope, and every one after it does too.