What is accounting in construction?

Why construction accounting is different from regular accounting

A retail business or a law firm recognizes revenue when they invoice and tracks expenses by category. Construction works differently at every step.

• Revenue recognized by completion, not by invoice

  Revenue is recognized as work progresses under the percentage of completion method, not when an invoice is sent. A contractor who is 40% through a job recognizes 40% of the contract revenue for that period, regardless of what has been billed.

• Cost tracked by job and cost code

  Every expense has to be allocated to a specific project and cost code, not just an expense category. Labor, equipment, materials, and subcontractor costs all need to trace back to the job where the work happened.

• Retainage withheld on every payment

  The owner holds back a percentage of each progress payment, typically 5% or 10%, until the project is substantially complete. That withheld amount is a real receivable and has to be tracked separately throughout the job.

• Cash flow timing works against the contractor

  The contractor pays workers weekly and subs monthly. The owner pays progress billings 30 to 60 days after submission. Managing that gap is one of the core financial challenges in construction.

• Lien rights depend on accurate cost tracking

  Mechanics lien rights and bond claims require documentation of labor, materials, and equipment furnished to the project. Sloppy cost allocation creates risk when a payment dispute reaches the lien stage.

The core accounting documents on a construction project

Each billing cycle on a construction project involves several documents that build on each other. Understanding how they connect is essential for anyone managing project finances.

• Schedule of Values (SOV)

  The line-item breakdown of the contract that controls how progress billing works. Every pay application is built from the SOV. If the SOV is set up wrong at the start, billing disputes follow for the life of the project.

  What Is a Schedule of Values

• Pay Application

  The monthly billing document submitted to the owner. The cover sheet shows the total amount due; the continuation sheet breaks down the billing by SOV line item showing percent complete and amount billed this period.

• Change Orders

  Formal modifications to the contract that adjust scope, price, or schedule. Change orders that add cost create new SOV line items and increase the contract value being billed.

  What Is a Change Order

• Submittals and material approvals

  Approved submittals confirm that materials meet specification requirements. On contracts that allow billing for stored materials, an approved submittal is typically required before the material can appear on a pay application.

  What Is a Submittal

• T&M Tickets (Time and Materials)

  Documentation of extra work performed outside the base contract. T&M tickets record labor hours, equipment hours, and materials used on directed work. They are the source documents when pricing a change order after the fact.

  What Is T&M in Construction

• Field Measurements

  The physical quantity records that back up every progress billing line item. Linear feet of pipe installed, cubic yards of concrete poured, tons of asphalt placed. Inspectors verify these numbers before approving payment.

  What Are Field Measurements

Key accounting methods in construction

• Percentage of Completion (PCM)

  The most common method for long-duration contracts. Revenue is recognized proportional to the work completed, measured either by cost incurred versus total estimated cost, or by physical completion percentage verified in the field. Required under GAAP for most construction companies.

• Completed Contract Method (CCM)

  All revenue and cost are deferred until the project is substantially complete. Used on short-duration jobs or in specific tax situations. Simpler to administer but gives no view into project profitability during construction.

• Cash basis accounting

  Revenue recorded when cash is received, expenses recorded when cash is paid. Simple for small operators but it masks true project health. A job can look profitable on cash basis and be losing money on accrual basis.

• Job costing

  Not a revenue recognition method but a cost tracking discipline. Every labor hour, material purchase, equipment charge, and subcontract payment is coded to a specific job and cost code. Job costing is what allows a PM to compare actual costs against the estimate line by line throughout construction.

Retainage

Retainage is the percentage of each progress payment the owner withholds until the project is substantially complete. The common rates are 5% and 10%, though some contracts reduce retainage to 5% after a project reaches 50% completion.

• Retainage is a real receivable, not just an accounting entry. It has to be tracked on the balance sheet and managed actively.
• On a $5 million contract at 10% retainage, the contractor is owed $500,000 that won't be released until the end of the project.
• Several states have passed retainage reduction laws requiring owners to release a portion after 50% completion or after substantial completion.
• Retainage release is typically conditioned on punch list completion, a certificate of substantial completion, and conditional lien waivers from all subs and suppliers.
• Subcontractors are typically subject to the same retainage percentage as the prime, which creates a cash flow chain from owner to prime to sub.

How field documentation connects to accounting

Every dollar billed on a pay application has to be backed by field evidence. A contractor claiming 80% completion on a grading item needs field measurement records, daily logs, or inspector sign-off to support that number.

• Field measurements (linear feet, cubic yards, tons, each count) are the primary evidence for unit-price billing.
• Daily logs and foreman reports document that the work actually happened on the dates claimed.
• T&M tickets document extra work that falls outside the base contract scope and unit prices.
• Inspectors and resident engineers verify field quantities against the SOV line items before approving each pay application.
• Documentation created at the time of the work is far stronger in a dispute than documentation reconstructed later from memory.

Common questions about construction accounting

What is construction accounting?

Construction accounting is project-based accounting where every dollar of revenue and cost is tracked to a specific job. Unlike standard business accounting, you don't report company-wide profit. You report project by project, because each job has its own contract, budget, billing schedule, and completion timeline.

How is construction accounting different from regular accounting?

Three main differences. First, revenue recognition: you recognize revenue as work progresses, not when you invoice. Second, cost allocation: every expense has to trace back to a job and a cost code, not just an expense category. Third, retainage: the owner withholds a portion of every payment until the project is substantially complete. That receivable has to be tracked separately.

What is job costing in construction?

Job costing means tracking every dollar of labor, material, equipment, and subcontractor cost to a specific project and cost code. When a laborer works on two jobs in the same day, the timecard has to split the hours. When a piece of equipment moves between jobs, the cost moves with it. Job costing is what lets a PM compare actual costs against the estimate line by line.

What is retainage in construction?

Retainage is a percentage of each progress payment that the owner withholds until the project is substantially complete. The typical rate is 5% or 10%. On a $10 million contract at 10% retainage, the contractor has $1 million sitting with the owner at project end. Retainage release is usually tied to punch list completion, a certificate of substantial completion, and lien waivers from subs.

What is the percentage of completion method?

The percentage of completion method (PCM) recognizes revenue proportional to how much of the work is done. If a project is 60% complete, you recognize 60% of the total contract revenue, regardless of how much you have billed or collected. Most construction companies on long-duration jobs use PCM. The completed contract method, used on short jobs, defers all revenue until the project is done.

What documents are needed to submit a pay application?

At minimum: a cover sheet with the total amount due, a continuation sheet showing the updated Schedule of Values line by line, lien waivers from subcontractors for prior payments, and any stored material documentation if the contract allows billing for materials not yet installed. The owner or CM may also require a notarized signature and project-specific forms.

How does field documentation affect billing?

Every line item on a pay application has to be backed by field evidence. A PM who claims 75% completion on a pipe installation needs field measurement records, daily logs, or inspector verification to support that number. Owners and resident engineers reject or reduce pay applications when the field documentation doesn't match the billing claim.

How does HeavyCivilHelper support construction billing workflows?

HeavyCivilHelper tracks RFIs, field directives, extra work, and field quantities by location on the project map. When a pay application is due, the supporting documentation is already organized by work area rather than scattered across email threads. The map also makes it easier to see which areas of the project have unresolved issues that could affect billing.

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