CASH FLOW CYCLE

DAYS IN AR FOR SUBCONTRACTORS.

QUICK ANSWER

Days in AR measures the average number of days it takes to collect payment after billing. For commercial subcontractors, 45 to 60 days is typical, and anything climbing past 60 signals a billing or collections process problem, not just a slow-paying GC. Days in AR is one of the earliest warning signs of a cash problem, because it moves before the bank balance does. A subcontractor whose days in AR creeps from 45 to 70 over six months will feel the squeeze months before the P&L shows any sign of trouble.

The number counts because it moves first. Cash tells you where you're today and the P&L tells you what happened last month, but the collection clock tells you what next quarter is going to feel like. A sub sitting at 45 days has about a month and a half of billed work funded out of the business at any moment. At 70 days that funded amount grows by more than half, and none of the increase comes from a worse job or a thinner bid. Same revenue, same margin, more of your own money out on the street.

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

WHAT IT MEANS.

Days in AR, also called days sales outstanding, is the average number of days it takes to collect payment after billing.

Track it monthly rather than annually, so a trend surfaces while it's still small. A yearly figure smooths out the climb that would have warned you in March, and by the time the annual number is compiled, two more quarters have been billed under the same broken routine.

WHAT WE SEE IN THIS BUSINESS

WHERE THE DAYS COME FROM.

01

Past 60 points at your own process

Every contractor blames the general contractor when collections slip, and sometimes that's right. A number climbing past 60 days usually points at the billing and collections routine inside your own office instead. Pay applications going out late, a schedule of values that invites pushback, and nobody calling on an approved invoice all add days that have nothing to do with the GC's check run.

02

It moves before the bank balance does

Days in AR is one of the earliest warning signs of a cash problem, because the collection clock stretches long before the account gets thin. A sub whose number creeps from 45 to 70 over six months feels the squeeze months before the P&L shows any sign of trouble. By the time cash is the topic at the kitchen table, the number moved two quarters ago.

03

Nobody tracks it monthly

A yearly figure hides the climb. Tracked once a year, the number is a report card on something you can no longer change. Tracked every month, the same number is an early alarm you can act on while the change is small and one conversation with a GC still fixes it.

04

Over 90 is a dispute or a broken routine

Once the average passes 90 days, the cause is rarely spread evenly across all your invoices. It's usually one unresolved dispute sitting in the aging report, or a collections routine nobody owns. Both are findable in an afternoon, and both stay put until somebody goes looking for them on purpose.

THE ARITHMETIC

WHAT IT LOOKS LIKE IN DOLLARS.

The formula

Divide accounts receivable by total credit sales for the period, then multiply by the number of days in that period. A subcontractor billing $500,000 a month with $750,000 in outstanding AR is running roughly 45 days in AR.

What good looks like

Under 45 days signals strong billing and collections discipline. 45 to 60 days is the typical range for commercial subcontractors. 60 to 90 days is worth investigating, whether the cause is billing timing, the GC pay cycle, or the collections routine. Over 90 days is active cash flow risk, and it usually ties to a specific unresolved dispute or a broken collections process.

$10.7M+
Client AR Recovered Since 2023
48
Active Trade Specializations
60 DAYS
Average Onboarding Time
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Last 12 months revenueMonthly fee
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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.

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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.

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COMMON QUESTIONS

FREQUENTLY ASKED.

45 to 60 days is typical for commercial subcontractors. Under 45 signals strong billing and collections discipline. Over 90 signals active cash flow risk that usually traces to a specific unresolved dispute or a broken collections routine.
They're the same metric under two different labels. Both measure the average number of days between billing and payment collection using the same formula: AR divided by credit sales, multiplied by the number of days in the period.
Days in AR moves before the bank balance and before the P&L shows any sign of trouble. A slow, unbroken climb in days in AR is often the first visible signal of a cash flow problem, months before it becomes a payroll crisis.
Three tiers, and which one you are in depends on how much of the work you want off your desk. Core is where you stop guessing: job costing built against the way you estimate, a 13 week cash forecast, monthly WIP, and a monthly meeting that ends in decisions, while your bookkeeper keeps doing the books. Executive is where you stop touching the books, because we run the bookkeeping and the controllership as well. Strategic is where every job shows its margin while it is still running, because the job costing and WIP platform is set up and managed for you. No payroll. No scope gaps.
Sixty days. We migrate your books back to the start of your last taxable year, set up ControlQore, and build your job costing structure from scratch. Fully operational in two months.
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.

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