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Healthy AR aging for a subcontractor runs toward 45 days, with 90+ days signaling weak collection discipline and 30 days representing a strong position. SPM records and tracks AR aging with a defined follow-up cadence at 30, 60, and 90 days, and flags collection issues early, but does not execute collections or payments on the client's behalf.

AR aging left unmanaged drifts. An invoice that should collect in 30 days slides to 45, then 60, simply because no one owns the follow-up on a defined schedule. That drift isn't usually a payer problem, it's a process problem, and it compounds across every open invoice at once. SPM tracks AR aging against a defined benchmark and follow-up cadence, and records AR activity accurately in the books, while collection execution itself, the actual calls and follow-up with the GC, remains the client's responsibility.

BY JOSH LUEBKER Published: Jul 2026 Updated: Jul 2026
THE AGING BENCHMARK

WHAT HEALTHY LOOKS LIKE.

Days Sales Outstanding, DSO, is the standard measure of AR health. 90 days or more signals weak collection discipline, 60 days is still on the slow side, 45 days is the target for a well-run subcontractor, and 30 days represents a strong position.

This benchmark holds flat across trades, unlike gross margin or overhead rate, because AR collection discipline isn't trade-specific the way cost structure is.

WHERE SPM'S SCOPE ENDS

RECORDING, NOT EXECUTING.

SPM records AR activity accurately, tracks aging against the benchmark, and flags invoices as they cross the 30, 60, and 90 day thresholds so the follow-up cadence has clear trigger points.

What SPM does not do is execute collections on the client's behalf, make the collection calls, send the demand letters, or negotiate directly with a GC over a disputed invoice. That execution stays with the client, the same scope boundary that applies to AP and payroll.

HOW TO GET IT RIGHT

WHAT MATTERS MOST.

AR aging tracked and reported against the 30/45/60/90-day benchmark every month
Follow-up triggers flagged automatically as invoices cross each aging threshold
AR activity recorded accurately in the books, feeding the cash flow forecast directly
Aging trends reported as part of the monthly CEO Report and cash flow check-in
Clear scope boundary: SPM records and tracks, the client executes collection follow-up
COMMON MISTAKES

WHERE IT GOES WRONG.

Common belief: "Our clients are just slow payers."
What's actually true: Some are, but most AR drift is a collection cadence problem, not a payer problem. A defined follow-up schedule at 30, 60, and 90 days catches drift before it becomes a pattern.

Common belief: "We'll get to collections when we have time."
What's actually true: Without a defined cadence and clear trigger points, collection follow-up competes with every other priority in the business and consistently loses, which is exactly how invoices drift past 90 days.

Common belief: "SPM handles our books, so they must handle collections too."
What's actually true: SPM records and tracks AR aging accurately and flags follow-up triggers, but collection execution, the actual outreach to a GC, stays with the client. This scope boundary is intentional and consistent across every SPM engagement.

COMMON QUESTIONS

FREQUENTLY ASKED.

45 days is the target for a well-run subcontractor, with 30 days representing a strong position and 90 or more days signaling weak collection discipline that needs attention.
No. SPM records AR activity, tracks aging against the benchmark, and flags follow-up triggers at 30, 60, and 90 days, but does not execute collections or make collection calls on the client's behalf.
AR aging feeds directly into the cash flow forecast. Invoices that drift past their expected collection date extend the forecast's assumptions, which is why accurate, current aging data matters for forecast reliability.
Aging tracks how long invoices have been outstanding and flags them at defined thresholds. Collection is the active follow-up process, calls, letters, negotiation, that actually recovers the cash, which remains the client's responsibility.
Yes. SPM defines the follow-up cadence and trigger points as part of the Cash Control System, so the client's team knows exactly when and how to follow up, even though the outreach itself isn't performed by SPM.
Josh Luebker, The Construction CFO
Josh Luebker
Fractional CFO · The Construction CFO

Former commercial construction project manager and master electrician. Managed 150+ projects totaling $2.1B+ in combined volume across 24 trade specializations, with individual jobs ranging $50K–$300M. Now fractional CFO for commercial subcontractors doing $1M–$12M through Sulphur Prairie Management. About Josh →  |  LinkedIn →

RELATED RESOURCES
CFOS Module
Cash Control System
The module this topic connects to most directly
Service
Construction Accounts Payable Management
The same recording-only scope boundary applied to the payables side
Service
Collecting From a Slow-Paying GC
Practical steps for the collection execution that stays with the client
SYSTEM CONNECTIONS
CFOS SPINE
Run on CFOS · Full System Index Cash Control System
RELATED READING
Construction Accounts Payable Management Collecting From a Slow-Paying GC
SERVICE LAYER
Fractional CFO for Construction Construction Bookkeeping

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Josh Luebker, The Construction CFO
JOSH LUEBKER
FOUNDER & CFO

Master electrician and former project manager, 150+ projects and $2.1B+ in commercial work. Now runs the numbers for subcontractors instead of standing on the job site.

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Stewart Bohrer, The Construction CFO
STEWART BOHRER
VP OF OPERATIONS

Keeps the system running day to day: job costing, WIP, monthly financial reviews, and the follow-through between calls. Josh handles onboarding.

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