CONSTRUCTION CASH CRISIS

NEGATIVE BANK ACCOUNT. HERE IS WHAT ACTUALLY MATTERS RIGHT NOW.

QUICK ANSWER

A construction company with a negative bank account isn't necessarily losing money. It may be winning jobs, executing well, and running 20% gross margins, while billing two weeks late, not following up on 60-day AR, and funding a GC's float out of its own pocket. Cash and profit are different things. Before assuming the business is failing, the first question is whether the negative cash is a timing problem or a structural problem. The fix is completely different.

There are only two answers, and the sorting takes minutes. A timing problem means the jobs are making money and the billing and collections work is behind, so the cure is operational and it works inside one or two billing cycles. A structural problem means the jobs themselves are priced below what they cost to build, so no amount of faster billing saves it and the cure is repricing forward work and cutting overhead. Owners who skip the sorting borrow against a problem they haven't diagnosed, which is how a bad month turns into permanent debt.

BY JOSH LUEBKERPublished 2026-08-06Updated 2026-08-07
THE DEFINITION

WHAT IT MEANS.

A negative bank balance in construction is usually a cash timing failure rather than a profit failure, because the work was earned and billed late while the money for it's still sitting with the GC.

The timing case looks like this. Billing lag is running 22 days. AR is sitting at 65 days average. The jobs are profitable, the crews are productive, and the bank is still empty because the business is financing everybody else's calendar. On $5M in annual revenue, cutting billing lag from 22 to 7 days and AR from 65 to 45 days recovers approximately $550K in cash timing. No new work, no new debt, no new customers.

The structural case looks different. Overhead is 28%. Gross margins are 18%. The jobs were bid below breakeven because the overhead rate inside the estimate was wrong, so every job won makes the hole deeper. Faster billing collects the loss sooner. It doesn't remove it. The cure is recalculating the overhead rate, rebuilding the estimate, and sometimes running less revenue to match what the business can carry.

Sorting the two takes one exercise. Run cost-to-complete on the three most active jobs. If all three project positive, this is timing. If two of three project negative, this is structural. The WIP schedule can hide the answer through overbilling, which is why the cost-to-complete work has to come from job cost data instead of from the P&L. Somebody who has done it before can call it in about 20 to 30 minutes.

WHY THE ACCOUNT GOES NEGATIVE BY TRADE

WHERE THE MONEY GETS STUCK.

01

Civil and underground utility, the mobilization stretch

Civil contractors go negative on the distance between mobilization and first payment, which is 60 to 90 days of payroll and equipment cost on municipal work before a single check comes in. The business is profitable. The cash model was built on 30-day private cycles and the public work doesn't run on that calendar. The fix is forecasting the public pay cycle on purpose instead of borrowing through it every spring.

02

Concrete, material cost that stacks in one month

Concrete subs go negative where material concentrates. Three pours in one month generate three ready-mix invoices that come due before any of the pay apps covering those pours get collected. That's a scheduling artifact and not a business failure. Mapping procurement timing against the billing calendar prevents it, because the pours can be sequenced against when the money comes back.

03

Electrical, work performed and never invoiced

Electrical negatives usually trace back to unbilled time-and-material work and change orders, where the cost went out and the revenue was never invoiced at all. A negative balance can be covering $200K of earned but unbilled scope sitting in a project manager's notebook. That's why the diagnosis on an electrical contractor always starts with the change order log before it touches the bank statement.

04

Any trade that's growing fast

Growth multiplies every cash delay the business already had. A sub growing 40% year-over-year is funding 40% more float, which means more payroll before billing and more material sitting in receivables. Going negative in a fast growth year means the working capital never scaled with the revenue. That's a planning failure rather than a profitability one, and it's the most common one we see.

THE ARITHMETIC

WHAT IT LOOKS LIKE IN DOLLARS.

$309K, from negative to funded in 30 days

A $6.7M civil contractor with a maxed LOC and recurring negative balances had $309K in the bank within 30 days. No new revenue and no new debt. The diagnosis was cash timing, meaning late billing and uncollected AR, so the operational fix released money the business had already earned and never collected.

Two questions that sort the problem in minutes

First, is gross margin healthy on a percentage-of-completion basis? Second, is AR aging past 60 days? Healthy margin plus aged AR is a timing problem with an operational fix. Thin margin plus current AR is a profit problem that needs pricing and overhead correction. The two answers point at completely different responses, which is why guessing is expensive.

13 weeks of forward view instead of Friday panic

A company managed off the bank balance treats every negative week as a surprise. A company running a 13-week forecast sees the dip eight weeks out, while accelerating one pay app or moving one AP payment still prevents it. The forecast doesn't create cash. It creates the lead time that makes cheap moves possible.

IMMEDIATE PRIORITIES WHEN CASH IS NEGATIVE

WHAT TO DO THIS WEEK.

Get every invoice out today

Pull the AR aging. Every invoice more than 15 days old without a follow-up gets a call now. The fastest cash in any business is in the 30 to 60 day AR bucket, and most of it will come in within 5 to 10 days of a professional follow-up call. This is the first action rather than a later one, because it costs nothing and it works.

Stage upcoming billing to hit GC cutoffs

If any projects have a GC billing cutoff in the next 10 days, get those invoices submitted today. A missed cutoff costs 30 days of additional cash delay. On a $150K invoice, that's 30 days of float that could have been cash this cycle instead of next quarter, and nobody gets that month back.

Don't take on merchant cash advances yet

An MCA at 50 to 80% effective annual interest compounds a cash problem instead of fixing one. Before going to an MCA lender, work out whether the problem is timing, in which case you fix billing and collections first, or structural, in which case an MCA only extends the runway before the same crisis returns. MCAs are rarely the right first step and they're the least reversible one.

Call your top GC relationships

If a specific invoice is critical and it sits in the 45 to 60 day range, a direct call from the owner to the GC principal, not the PM, often accelerates payment. GC principals want their subcontractors financially healthy. A professional conversation about payment timing isn't a relationship risk. It's how good business relationships work.

$10.7M+
Client AR Recovered Since 2023
48
Active Trade Specializations
60 DAYS
Average Onboarding Time
PRICING

FLAT MONTHLY FEE. NO SURPRISES.

Three tiers, priced by your trailing twelve month revenue. Which one you're in depends on how much of the work you want off your desk. No hourly billing, no payroll, and no add-ons.

Pricing

Last 12 months revenueMonthly fee
Up to $1M$1,900 to $2,900
$1M to $3.5M$2,600 to $3,900
$3.5M to $6.5M$3,800 to $5,700
$6.5M to $9.5M$5,100 to $7,100
$9.5M to $12.5M$6,100 to $8,500
$12.5M to $15.5M$7,400 to $11,000
$15.5M to $18.5M$9,400 to $13,500
$18.5M+Quoted individually

Range reflects the three tiers below. Which one you're in depends on how much of the work you want off your desk. No payroll. No hidden line items.

Core

You stop guessing.

You get the CFO work. Job costing built against the way you estimate, a 13 week cash forecast, monthly WIP, and a meeting every month that ends in decisions rather than a report.

Your bookkeeper keeps doing the books.

Executive

You stop touching the books.

Everything in Core, and we run the bookkeeping and the controllership as well. Nobody in your office is answering coding questions or chasing a reconciliation at month end.

We do the books. No payroll.

Strategic

Every job shows its margin while it's still running.

Everything in Executive, plus the job costing and WIP platform set up, loaded with your cost codes, and managed for you every month. You never have to learn it.

We do the job costing.

COMMON QUESTIONS

FREQUENTLY ASKED.

No. A construction company can run a negative bank account while being fundamentally profitable, if billing lag and collections have opened a cash timing hole bigger than the working capital reserve. We have pulled clients out of negative cash positions while the underlying P&L was healthy the whole time. The first diagnostic question is always the same one: is this timing or structural?
When the problem is timing, the first AR recovery can happen within 5 to 10 days of a systematic follow-up push. We have recovered $200K+ in the first 30 days of an engagement on timing problems. Structural problems take 3 to 6 months of operational correction to stabilize, because the cure is repricing work. Working out which type you have takes about 20 to 30 minutes.
An AR aging review, with a follow-up started immediately on every invoice over 30 days. At the same time the WIP schedule gets reconciled to find out whether the P&L is telling the truth. Those two actions together, inside the first week, establish whether the problem is timing, structural, or both. The whole fix sequence follows from that answer.
Both, in that order, but stage the draw deliberately and not in a panic. Covering payroll is non-negotiable, because bounce payroll once and your best people start updating resumes. Draw what the next two weeks require, not the whole available line. Then run the diagnosis right away, because an LOC draw against a timing problem gets repaid in one cycle while a draw against a profit problem becomes permanent debt that compounds. The draw buys time, and treating it as the fix is how four-MCA situations start.
For timing-driven negatives, one to two billing cycles, so 30 to 90 days. Billing cadence and a collections protocol produce visible results on the first full cycle. For profit-driven negatives it takes longer, because the fix is repricing forward work and cutting overhead, and that takes effect as new jobs replace old ones, so figure two to three quarters to full stability. Either way the 13-week forecast goes live in the first month, which means the balance stops being a surprise before it stops being negative.
WHAT THIS TIES INTO
Josh Luebker, The Construction CFO
Josh Luebker
FRACTIONAL CFO · THE CONSTRUCTION CFO

Former commercial project manager and master electrician: 150+ projects worth $2.1B combined, from $50,000 to $300M. Now fractional CFO to commercial subcontractors.

IS YOUR NEGATIVE BALANCE TIMING OR PROFIT?

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