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Why profitable Idaho contractors run out of cash

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The short answer

A contractor pays for labour, materials and subcontractors weeks before the work is billed and months before it is fully collected, and Idaho caps but does not remove the retention held back from every progress payment until the job is accepted. On a competitively bid job that retention is often the whole margin, so the more work you win, the less cash you hold. The answer is a facility sized to the gap between spending and collecting, arranged before the gap opens.

Part of our guide to Lines of Credit — what it is, what it costs, and who it suits.

Not sure this is the right product at all? The Idaho small business funding guide covers every option an Idaho business has.

The accountant says you made money. The bank balance says something else. In construction that is not a bookkeeping error — it is the ordinary condition of a growing contractor, and it is why a busy year is more dangerous than a quiet one.

The gap, in order

Work through the sequence a single job actually runs on.

  1. You buy materials and mobilise. Money out.
  2. You run payroll every two weeks, whether or not anything has been billed. Money out.
  3. Your subcontractors invoice you on their terms, which rarely match yours. Money out.
  4. You submit a progress billing at the end of the month, for work already done and already paid for.
  5. The owner or general contractor reviews it, approves some of it, and pays on their cycle. Money in, well after the cost was incurred.
  6. A slice of every one of those payments is withheld until the job is complete and accepted. Money not in, for as long as the job lasts.

Every step is ordinary. Together they mean the business is lending money to its customers continuously, in an amount that scales directly with how much work it is doing.

Retention is usually your margin

Idaho limits retention on most private construction contracts to five percent of each payment, and five percent of the contract price overall, under Idaho Code § 29-115. The cap does not apply to residential property of one to four units, or where a performance bond was requested and not provided.

On public work the rule sits in Idaho Code § 54-1926 and turns on bonding. Where a performance or payment bond covers more than half the contract amount, retention is limited to five percent; where no such bond is required, ten percent is withheld.

Five percent sounds survivable until you set it against the margin on the job. On competitively bid general construction the net margin is frequently thinner than the retention withheld against it, which means the entire profit on the job is paid last — after every cost has already gone out the door. Until final acceptance you have funded the work and earned nothing you can spend.

Idaho also sets the release clock. On private work retention must be released within thirty-five days of completion, and a general contractor who receives it has ten days to pass subcontractors their share. If you are a sub and the money is not moving, that deadline is in statute rather than in your customer’s discretion.

Why “I am owed four hundred thousand” does not impress a lender

Contractors often expect a receivables ledger to do more work in an application than it does. A lender is not really asking how much you are owed. They are asking what happens if the customer does not pay, and in construction the answer depends on paperwork you either kept up or did not.

Registration is not a licence, and Idaho is unusual here

Idaho registers contractors rather than licensing them. Registration through the Division of Occupational and Professional Licenses requires proof of workers’ compensation cover, general liability insurance of at least three hundred thousand dollars, a statement of the type of construction you perform, and ownership details. It requires no examination, no documented experience and no test of financial capacity.

Two things follow. The first is that your registration tells a lender almost nothing about whether you can run a job profitably, so do not expect it to carry weight it was never designed to carry.

The second matters far more. An unregistered contractor in Idaho cannot obtain a building permit, waives any right to a lien on the property, and loses the right to sue to collect money for the work. Letting registration lapse is not a formality with a fine attached — it quietly converts every open receivable into something you cannot enforce. Check your own status before you act on anything else here.

The lien clock is ninety days and it does not pause for goodwill

Idaho Code § 45-507 allows ninety days from the completion of your labour, services or materials to record a claim of lien, and requires a copy to be served on the owner within five business days of filing. Under § 45-510 the lien then binds the property for six months, after which it expires unless proceedings have been commenced.

The failure is almost always social rather than administrative. The customer is slow, you do not want to sour a relationship you expect to bill again, ninety days seems a long time, and then it is not. What you held was a secured claim against real property. What you hold afterwards is an unsecured promise from someone who has already shown you how they treat invoices — and a lender looking at your collateral will price it accordingly.

Matching the facility to the shape of the gap

The cash need here is not one need, and the expensive mistakes come from funding all of it with whatever was easiest to obtain.

  • The recurring gap between spending on a job and collecting for it is a timing problem, which is precisely what a revolving line of credit exists for. Size it on the widest combined gap across your live jobs, not on the value of any single contract.
  • Retention is slow money rather than doubtful money. That argues for a facility you can carry for months without penalty, not a short, fast product that must be repaid before the retention is released.
  • Plant, trucks and trailers are multi-year assets that earn their own keep. They belong on equipment finance, not on the line that has to cover payroll in March.
  • Mobilising an unusually large contract — one materially bigger than your normal job — is a one-off event. Funding it from the revolving line leaves nothing for the jobs already running.

Invoice factoring fits construction less comfortably than it fits trucking, and it is worth knowing why before somebody sells it to you. Progress billings are disputable by nature, back-charges and offsets are ordinary, and retention is frequently excluded from what a factor will advance against. Some construction receivables do factor well; the candidates are the clean, accepted, unconditional billings to a creditworthy general contractor.

Growth is the risk, not the reward

This is the part that gets argued with. A contractor whose revenue doubles has doubled the money permanently tied up in work in progress and retention. The business becomes more valuable and less liquid at the same moment, and the failure mode is not losing money. It is running out of it while making some.

That is how a contractor goes under during the best year on the books. It is also why an honest conversation about a large new award starts with how much cash it consumes before it produces any, rather than with what it is worth.

The North Idaho complication

Construction in Kootenai and Bonner counties carries a second cycle on top of the first. The building season compresses, and the months when little new work is billed are the same months when retention from the last season has still not been released and the crew you intend to keep for spring is still on payroll.

Two gaps stacked, which argues for arranging credit on the back of the busy season rather than in the middle of the quiet one. Lenders weight recent months most heavily. A Coeur d’Alene or Sandpoint contractor applying in February is presenting their weakest statements; the same business applying in September is presenting its strongest. Nothing about the company changed in between.

What to do this month

  1. Confirm your contractor registration is current — and your subcontractors’ too, because an unregistered sub is a lien and payment problem that becomes yours.
  2. Total the retention outstanding across every open job. Most owners are surprised by the figure, because it never appears as a line anyone looks at.
  3. Find the widest gap over the last two years between cost incurred and cash collected. That number, not your revenue, is what a line of credit should be sized against.
  4. Diary the ninety-day lien deadline for each job at the point your work completes, so that letting it lapse is at least a decision rather than an oversight.
  5. Arrange the facility in your strong months and leave it undrawn. An unused line costs little; needing one you do not have costs the business.

None of this makes the gap disappear. It is structural, it is how the industry pays, and the contractors who last are the ones who financed it deliberately instead of discovering it one payroll at a time.

Common questions

Can a customer in Idaho hold back more than five percent?
On most private contracts, no — Idaho Code § 29-115 caps retention at five percent of each payment and five percent of the contract price. The cap does not apply to one-to-four-unit residential property, or where a performance bond was requested and not provided. On public work the limit depends on bonding under § 54-1926. If a contract in front of you says more than the statute allows, raise it before signing rather than after.
How long do I have to file a lien in Idaho?
Ninety days from the completion of your labour, services or materials, under Idaho Code § 45-507, with a copy served on the owner within five business days of filing. The lien then binds the property for six months unless proceedings are commenced (§ 45-510). Deadlines are strict and facts matter, so take the specifics of your job to an Idaho construction attorney — we are a finance brokerage, not a law firm.
Should I factor my progress billings?
Sometimes, though construction receivables are harder to factor than most. Progress billings are disputable, offsets and back-charges are common, and retention is often excluded from what a factor will advance against. A clean, accepted billing to a creditworthy general contractor is the realistic candidate; a contested one is not.
How big should my line of credit be?
Size it against the widest gap between money spent and money collected across your live jobs, including outstanding retention — not against revenue, and not against one contract. Contractors who get this wrong usually sized it for a single job and found it exhausted the moment a second one started.
Does being registered help me get approved?
Not much by itself. Idaho registration requires insurance and paperwork rather than an examination, experience or any financial test, so it does not signal capability to an underwriter. Not being registered hurts a great deal, because it removes your lien rights and your ability to sue for payment — which is exactly the collateral the lender was counting on.
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About the author

Klark Sparks, co-founder and commercial finance broker at Sparks Family Finance.

Klark works with owners at the two points that decide everything: when they are working out whether to start, and when the business is running and needs capital to keep going. He would rather give someone the honest answer — including that borrowing is the wrong move this quarter — than place a deal that looks good this month and hurts next year.

More about Klark and Sparks Family Finance

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