Job Borrow

Job borrow is what happens when a contractor uses cash from one project to fund the operations of another. Money that belongs to Job A — collected from progress billings, front-loaded schedules of values, or overbilled draws — gets spent covering payroll, materials, or overhead on Job B.

It's one of the most common and least visible cash flow problems in construction. And it's how otherwise healthy contractors end up insolvent.

Why It Happens

Construction cash flow is uneven by nature. Jobs have mobilization costs before billings catch up. Owners are slow to approve draws. Retainage sits locked until final completion. When one job is cash-hungry and another has surplus, the temptation — sometimes unintentional — is to fill the gap with whatever cash is in the account.

When there's no job-level cash segregation, the commingling happens automatically. The bank account doesn't know which dollars belong to which project.

Why It's Dangerous

Every dollar borrowed from Job A creates an obligation. When Job A reaches its billing limits or closes out, the money has to come from somewhere — usually future billings on other jobs, a line of credit, or the owner's capital. If the borrowed job also runs into trouble, the deficit compounds.

The pattern accelerates as backlogs grow. More jobs mean more opportunities to borrow, and more obligations accumulating in the background. Contractors who run this way for long enough eventually hit a point where there's no clean job left to borrow from — and the whole structure collapses simultaneously.

Surety underwriters and lenders recognize job borrow as a serious warning sign. When WIP reports show persistent underbilling across the backlog alongside tight working capital, it often indicates money has moved between jobs and hasn't come back.

How It Shows Up on the WIP

The WIP report is the clearest place to see job borrow risk. Key signals:

• Widespread underbilling — more jobs running costs ahead of billings than can be explained by project timing alone
• Gross profit fade — jobs that were bid at healthy margins but are trending lower, often because untracked costs from other jobs are bleeding in
• Stale receivables — billings that haven't been collected but the costs have already been spent elsewhere

No single line item says "job borrow" — but the combination of underbilled backlog, thinning margins, and slow collections tells the story.

The Fix

The structural fix is job-cost discipline: tracking cash inflows and outflows at the job level, not just the company level. Contractors who know exactly where each dollar came from and what it was spent on don't borrow between jobs — or at least know immediately when they are.

Operationally, this means:

• Separate draw accounts or at minimum rigorous job-cost allocations
• WIP reviews frequent enough to catch underbilling before it compounds
• A company-level cash forecast that accounts for each job's net cash position, not just the total bank balance

The goal isn't perfection — it's visibility. A contractor who knows they're borrowing can make a deliberate decision about it. A contractor who doesn't know is accumulating risk they can't see.