Introduction
A mechanical contractor closes a $1.8 million project. The final invoice goes out. A week later, the controller realizes that two phases of labour were never billed. The work was done. The hours existed somewhere in the system. But nothing connected field time entry to the billing cycle in real time, and by the time anyone caught it, the window to recover those costs was closed.
This is not a billing problem. It is a software problem. Construction accounting requires capabilities that most general business tools were never designed to support: percentage-of-completion revenue recognition, WIP schedule generation, retainage/holdback tracking across concurrent projects, AIA/CCDC progress billing formats, certified/statutory payroll, and union fringe benefit calculations. For a specialty contractor managing multiple active contracts, these are not edge cases. They are the core of the accounting function.
This guide covers what those requirements actually look like in practice, where standard platforms fall short, and what changes when a contractor moves to a system built for construction accounting from the ground up.
The Problem: Construction Accounting Is Not Commercial Accounting
Most general business tools are built around a simple cycle: invoice, collect, record. Construction does not work that way, and the gap between what standard software does and what construction actually requires creates a specific set of problems that compound over time.
🚩 Revenue recognition happens over months, not at the point of sale
Percentage-of-completion accounting requires a system that tracks costs against a budget in real time and calculates earned revenue accordingly. Without that, financial statements reflect billed position rather than true financial position, a meaningful difference when a lender or bonding company is reviewing your numbers.
🚩 Retainage/holdback balances are invisible without the right system
Contractors managing multiple concurrent projects can have significant retainage balances across dozens of contracts. Without a system that tracks retainage/holdback at the project and phase level, those balances are invisible until someone builds a spreadsheet to find them.
🚩 AIA/CCDC progress billing cannot be assembled from a standard invoice tool
A G702/G703 or CCDC progress draw certificate reflects completed percentage by line item, retainage/holdback position, and stored materials. Building it manually from a separate job cost system adds hours to every billing cycle and introduces reconciliation risk.
🚩 Certified/statutory payroll and union fringes require construction-specific payroll
For contractors running mixed crews across union and non-union agreements, handling these in a separate platform means a manual reconciliation step between payroll and job costing on every pay period.
🚩 WIP schedule is the document banks and bonding companies rely on
A contractor that cannot produce a current, accurate WIP schedule on demand is operating with a financial reporting gap that affects both borrowing capacity and bonding limits. Building it manually in Excel every month is time-consuming and error-prone.
In each case, the underlying issue is the same. The accounting system was not built for construction, so the accounting team works around it. Those workarounds take time, introduce errors, and obscure the financial information that owners, lenders, and bonding companies need to make decisions.
Where Generic Accounting Tools Fall Short
QuickBooks is the most common starting point for specialty contractors, and it works well for straightforward invoice-and-collect businesses. The moment a contractor is managing multiple concurrent projects with phased billing, retainage/holdback, and certified/statutory payroll, the workarounds begin.
The situation gets worse as the company grows. A contractor running three or four concurrent projects can manage those workarounds with discipline. At ten or fifteen active projects, some with union crews, some with certified/statutory payroll requirements, some with AIA/CCDC billing cycles, the workarounds stop being manageable and start being a liability. Cost overruns go undetected until month-end. Retainage/holdback sits uncollected because nobody has a clean view of what is outstanding. The bonding company asks for a WIP schedule and the controller has to build one from scratch in Excel.
The issue is not that these tools are bad. It is that construction accounting is genuinely different from commercial accounting, and software built for the general market reflects that.
Is your accounting system keeping up?
- Can your system produce a current WIP schedule on demand without building it manually in Excel?
- Does percentage-of-completion revenue recognition update automatically as costs are posted to the job?
- Is retainage/holdback tracked at the project and phase level with a clear view of what is outstanding?
- Can your system generate AIA G702/G703 or CCDC progress draw billing directly from job costs?
- Does your payroll system handle certified/statutory payroll and union fringe calculations within the same platform as your accounting?
- Does field time entry flow automatically into job costing and payroll without manual re-entry?
- Can you produce consolidated financial reporting across multiple companies or entities from a single system?
- Can your team produce a WIP schedule or interim financials for a lender or bonding company in under a day?
If the answer to three or more of these questions is no, your accounting system is creating overhead and risk.
What Construction Accounting Looks Like
For a specialty contractor, accounting and operations are not separate functions. They are the same function running on a shared data set. A construction accounting system handles the following natively, without workarounds or add-ons.
Percentage-of-completion revenue recognition
Updates automatically as costs are posted to the job, producing a revenue figure that reflects the actual state of the project rather than what has been billed.
WIP schedules
This is not a month-end exercise. A controller should be able to pull a current over-billed and under-billed position across all active projects at any point during the month, not after building it in Excel.
Retainage/holdback
Tracked at the project and phase level, with clear visibility into what is outstanding and when it is eligible for release, not buried in a spreadsheet someone has to maintain separately.
AIA/CCDC progress billing
Generated directly from job costs. A G702/G703 or CCDC progress draw certificate should reflect the actual costs posted to the job, completed percentage by line item, and retainage/holdback position without manual assembly.
Certified/statutory payroll and union fringes
Processed within the same payroll system as all other labour, with wage rates and fringe calculations configured at the project level and flowing directly into job costing.
Multi-company structures
Managed from a single system, with intercompany transactions, consolidated reporting, and entity-level compliance handled without switching platforms.
When these capabilities work together, the data moves from the field into the accounting system automatically. Nothing is re-entered, reformatted, or reconciled manually.
The Jonas Approach
Knowing what construction accounting should do and finding a system that actually does it are two different things. Many platforms handle one or two of the requirements well. The gap shows up in the connections between them. When payroll does not talk to job costing, when WIP has to be built manually because the billing module and the cost module are not integrated, when a month-end close stretches into days because the data is not where it needs to be.
Jonas was built specifically for construction contractors, and the accounting module reflects that. The requirements covered in this guide, WIP, retainage/holdback, AIA/CCDC progress billing, certified/statutory payroll, multi-company reporting, are not add-ons or configurations. They are built into how the system works. Field time entry flows into payroll and job costing in the same step. A cost posted to a project phase updates the WIP position immediately. Retainage/holdback outstanding is visible in accounts receivable without a separate tracking process.
The practical result is a back office that closes faster, reports more accurately, and responds to lender and bonding requests without a preparation exercise. Controllers who previously spent days assembling a WIP schedule before a bonding review are pulling it on demand. Retainage/holdback that sat uncollected because nobody had a clean view of what was outstanding is now visible and actively managed. Payroll that required reconciliation between a separate platform and job costing runs in a single process.
For owners, the change is simpler to describe. The financial picture of the business is current, accurate, and accessible without asking someone to build it.
"As a business owner I'm able to see where my business is at in every aspect of the business at the click of a button. I don't have to rely on different software to talk to each other. It's all live, everything's posted instantly."
Next steps
If your current accounting system requires manual steps, spreadsheet workarounds, or a significant preparation process every time a lender or bonding company asks for financials, the gap is costing you time and creating risk you may not be able to see until a project closes.
A walkthrough with a Jonas specialist will review your current setup, identify the specific areas where construction accounting requirements are creating friction and show how our software solves it.
Book a demo today to see what a purpose-built system would look like in your operation.
Frequently asked questions
Construction accounting recognizes revenue over the life of a project rather than at the point of sale. Requirements like percentage-of-completion, WIP schedules, retainage/holdback, AIA/CCDC progress billing, and certified/statutory payroll do not exist in standard commercial accounting and are not handled natively by most general business tools.
The most common trigger is managing multiple concurrent projects with phased billing, retainage/holdback, and certified/statutory payroll simultaneously. At that point, the manual steps required to produce accurate WIP schedules and certified/statutory payroll reports become a significant burden, and the cost of the workarounds typically exceeds the cost of moving to a purpose-built system.
A WIP schedule shows the over-billed and under-billed position across all active projects by comparing billed revenue against earned revenue. Bonding companies use it to assess the financial health of a contractor’s project portfolio, and an inaccurate or manually assembled WIP schedule raises questions that can affect bonding capacity.
A purpose-built system processes certified/statutory payroll within the same platform as all other labour, with wage rates and fringe benefits configured at the project level. That integration means labour costs flow directly into job costing without a separate reconciliation step, worth confirming with any vendor if your work includes prevailing wage projects in the US or provincially regulated public projects in Canada.
Construction accounting platforms typically support intercompany transactions, consolidated reporting, and entity-level compliance from a single system. It is a common requirement for contractors operating a construction company and a service company as separate legal entities, and worth confirming during any software evaluation.
