Construction projects rarely move in a straight line from cost to invoice to profit. Contractors may incur labour, material and subcontractor costs months before they complete a project or receive payment. That is why construction work in progress is an important part of construction accounting. Proper WIP accounting helps UAE contractors understand project progress, control costs, recognise revenue appropriately, and monitor actual profit margins.

What Is Construction Work in Progress Accounting?

Construction work in progress (WIP) represents work on construction projects that has started but has not yet reached completion or final transfer.

In practical terms, a contractor may have already spent AED 2 million on a project while the project remains only partly complete. Those costs need to be tracked against the specific project rather than treated as if the entire project has already been completed.

Construction WIP accounting helps contractors answer important questions such as:

• How much has been spent on each project?
• How much work has been completed?
• How much revenue should be recognised?
• How much has already been billed?
• What costs remain?
• Is the project still profitable?
• Are actual costs exceeding the original budget?

WIP therefore connects project costs, project progress, billing and profitability.

What Does Work in Progress Mean in Construction?

Construction WIP generally relates to partially completed contract work and the costs associated with that work. Depending on the accounting framework and contract circumstances, the accounting presentation can involve more than simply putting a “WIP” balance on the balance sheet. Contractors may also need to consider revenue recognition, contract assets, contract liabilities and related project costs.

This distinction matters because WIP is not automatically the same thing as unbilled revenue.

How Is Construction WIP Different From Normal Inventory?

Construction projects differ from ordinary inventory because contractors usually build or provide something specifically for a customer under a contract.

A construction company may have:

• Project-specific labour
• Materials purchased for a particular site
• Subcontractor costs
• Equipment costs
• Project management costs
• Long-term contracts
• Progress-based billing

This makes construction project accounting more complex than simply counting finished goods.

Why WIP Accounting Is Important for Construction Companies in the UAE

A contractor can generate strong cash flow while still having weak project margins. Similarly, a company can show high invoicing during a month without having earned the same amount of revenue under its applicable accounting requirements.

Accurate WIP accounting provides a more realistic view of project performance.

Key benefits include:

• Accurate project profitability: Management can see whether each project is making or losing money.
• Better cost control: Finance teams can compare actual costs with approved budgets.
• Reliable financial reporting: Project activity is reflected in the appropriate accounting period.
• Improved forecasting: Management can estimate remaining costs and expected margins.
• Better cash-flow planning: Billing, receivables, and project expenditure can be monitored together.
• Early identification of problems: Cost overruns and margin deterioration become easier to detect.
• Better audit preparation: Supporting project records are available when required.

What Happens When Contractors Do Not Track WIP Properly?

Poor WIP accounting can make a profitable project appear unprofitable or make a loss-making project look profitable.

Common consequences include:

• Incorrect project margins
• Understated or overstated revenue
• Incorrect cost allocation
• Unexpected year-end adjustments
• Poor cash-flow forecasts
• Difficulty explaining financial results
• Problems reconciling project reports with the general ledger
• Greater audit and compliance risk

For a contractor managing several projects, these errors can multiply quickly.

What Costs Are Included in Construction WIP?

The exact accounting treatment depends on the applicable accounting requirements and contract circumstances, but project cost tracking commonly starts with direct and allocable costs.

Direct Construction Costs

Direct costs can include:

• Construction materials
• Direct labour
• Subcontractor charges
• Site-specific equipment costs
• Project-specific transportation
• Direct site expenses

For example, if a UAE contractor purchases AED 300,000 of steel specifically for Project A, the accounting system should identify that cost with Project A rather than simply recording it as a general company expense.

Indirect Construction Costs

Some costs support construction activities without being directly attributable to one individual task.

Examples may include:

• Site supervision
• Project management
• Site utilities
• Equipment depreciation
• Certain insurance costs
• Other appropriately allocable project overheads

The company should establish consistent cost-allocation rules so that similar projects receive comparable treatment.

Costs That Need Careful Review

Not every business expense automatically belongs in construction WIP.

Finance teams should carefully review:

• General administration costs
• Selling and marketing costs
• Abnormal waste
• Financing-related costs
• Non-project-specific expenses
• Costs that relate to completed rather than ongoing work

The accounting policy and applicable financial reporting requirements should determine the final treatment.

How to Calculate Construction Work in Progress

A useful starting point for internal project reporting is to reconcile opening WIP, current project costs and amounts transferred to completed work.

A simplified management calculation can be expressed as:

Closing WIP = Opening WIP + Current eligible project costs − Costs transferred to completed work

The actual accounting entries depend on the company’s accounting framework and how it recognises construction revenue and costs.

Construction WIP Calculation Example

Consider a UAE contractor with the following figures:

• Opening WIP: AED 500,000
• Current-period project costs: AED 2,000,000
• Costs transferred to completed work: AED 1,700,000

The simplified closing WIP would be:

AED 500,000 + AED 2,000,000 − AED 1,700,000 = AED 800,000

The AED 800,000 represents the remaining project cost position under this simplified management calculation. However, contractors should not assume that this number alone determines the revenue or contract asset/liability position. Those areas require separate analysis.

What Information Is Needed for a WIP Calculation?

A reliable construction WIP calculation normally requires project-level information such as:

• Contract value
• Original project budget
• Revised project budget
• Costs incurred to date
• Estimated costs to complete
• Approved variations
• Claims, where relevant
• Project completion percentage
• Certified work
• Invoices issued
• Amounts collected
• Retention
• Subcontractor costs
• Accrued costs
• Expected project margin

The better the underlying project data, the more useful the WIP report becomes.

Construction WIP and Percentage of Completion

One of the most important concepts in long-term construction accounting is measuring how much of a contract has been performed. Under IFRS 15, revenue is recognised when an entity satisfies a performance obligation. Where a performance obligation is satisfied over time, the entity uses an appropriate measure of progress to determine the amount of revenue to recognise.

What Is the Percentage of Completion Method?

The percentage of completion is a way of measuring progress on qualifying contracts.

A commonly used cost-to-cost measure is:

Percentage complete = Costs incurred to date ÷ Estimated total contract costs

For example, assume:

• Costs incurred: AED 4 million
• Estimated total project cost: AED 10 million

The calculated progress would be:

AED 4 million ÷ AED 10 million = 40%

This percentage can form part of the revenue-recognition analysis when the applicable IFRS 15 requirements support measuring progress in this way.

Why Estimated Total Costs Matter

The calculation is only as reliable as the estimated total project cost.

Suppose a contractor initially estimates that a project will cost AED 8 million. Six months later, material prices rise and additional subcontractor work becomes necessary. The revised estimated project cost might increase to AED 10 million.

That change can significantly affect:

• Percentage complete
• Expected gross profit
• Revenue recognition
• Forecast margins
• Project valuation

Contractors should therefore update cost-to-complete estimates regularly.

WIP Accounting Under IFRS 15 for Construction Contracts

IFRS 15 construction contracts require contractors to consider the specific terms and substance of each customer contract. IFRS 15 addresses identifying contracts and performance obligations, determining transaction price, allocating that price and recognising revenue when performance obligations are satisfied. It also requires an appropriate measure of progress where a performance obligation is satisfied over time.

How IFRS 15 Applies to Construction Contracts

A contractor should consider:

1. Whether a contract with a customer exists.
2. What performance obligations the contract contains.
3. The transaction price.
4. Whether the transaction price includes variable consideration.
5. How the transaction price is allocated.
6. When each performance obligation is satisfied.
7. How progress should be measured where revenue is recognised over time.

Construction contracts may include variations, bonuses, penalties, claims and other variable consideration. These factors require careful assessment.

Over Time vs Point-in-Time Revenue Recognition

Not every construction arrangement should automatically recognise revenue over time. IFRS 15 specifies criteria for recognising revenue over time. If those criteria are not met, revenue is recognised at the point when control transfers to the customer. Therefore, contractors should assess the actual contract rather than applying a blanket “percentage complete” rule to every project.

Contract Assets and Contract Liabilities

Contract assets and contract liabilities are also important. A contractor may have performed work for which its right to consideration depends on something other than simply the passage of time. This can result in a contract asset. Conversely, a customer advance can create a contract liability when the contractor has received consideration before satisfying the relevant performance obligation.

These balances should not automatically be labelled as construction WIP.

WIP Accounting, Billing and Revenue: What Is the Difference?

Contractors often use the terms WIP, billing and revenue interchangeably. They are not necessarily the same.

Area	What It Measures	Example
WIP	Ongoing project work/cost position	AED 800,000 of eligible project costs remain in progress
Billing	Amount invoiced to the customer	AED 1 million invoice issued
Revenue	Amount recognised under applicable accounting rules	AED 900,000 recognised based on performance

Why Billing Does Not Always Equal Revenue

A contractor may issue a progress invoice before the same amount qualifies for revenue recognition. The opposite can also occur: work may have been performed while billing has not yet caught up.

This is why finance teams should reconcile:

Project progress → Revenue → Billing → Receivables → Cash

rather than assuming that the invoice ledger alone represents project performance.

Overbilling and Underbilling in Construction Accounting

Billing differences can provide useful management information.

What Is Underbilling?

Underbilling can occur when the amount billed is lower than the amount that would otherwise correspond to the project’s recognised progress, subject to the specific contract and accounting requirements. For example, a contractor may have completed substantial work but may not yet have reached the contractual milestone required for an invoice. This needs careful assessment because billing rights and accounting recognition are not always identical.

What Is Overbilling?

Overbilling generally describes a situation where the amount invoiced or billed is ahead of the corresponding project progress or revenue recognition. For example, a contractor might invoice AED 2 million under a contractual milestone while the accounting analysis supports a lower amount of revenue at that stage. The difference needs to be appropriately reflected under the applicable accounting requirements.

How Contractors Can Monitor Billing Differences

A monthly project review should compare:

• Work performed
• Revenue recognised
• Amount billed
• Amount collected
• Contract asset position
• Contract liability position
• Retention
• Outstanding receivables

This provides management with a much clearer picture than reviewing invoices alone.

How WIP Accounting Affects Construction Profit Margins

The real value of construction WIP accounting is not just producing a balance. It helps management understand whether projects are financially healthy.

Measuring Project Profitability

A contractor can monitor:

• Contract revenue
• Actual costs incurred
• Estimated costs to complete
• Forecast total project cost
• Expected gross profit
• Expected gross margin

For example, if a project has an expected revenue of AED 12 million and estimated total costs of AED 9 million, the expected gross profit is AED 3 million.

That gives an expected gross margin of:

AED 3 million ÷ AED 12 million × 100 = 25%

If estimated costs later rise to AED 10.5 million, expected profit falls to AED 1.5 million, reducing the expected margin to 12.5%. That change should trigger management attention.

Identifying Cost Overruns Early

Warning signs include:

• Labour costs rising faster than expected
• Material price increases
• Subcontractor variations
• Delayed completion
• Increased equipment costs
• Rework
• Scope changes
• Falling gross margins

WIP reporting gives management an opportunity to address these problems before the project reaches completion.

Construction WIP Accounting Process: Step-by-Step

A consistent monthly process can improve both reporting and project control.

Step 1 — Set Up Project Cost Codes

Create separate codes for materials, labour, subcontractors, equipment and other relevant costs.

Step 2 — Record Direct and Indirect Costs

Post costs to the correct project and apply documented allocation rules where appropriate.

Step 3 — Reconcile Subcontractor and Supplier Costs

Compare supplier statements, subcontractor invoices and accrued costs with the accounting ledger.

Step 4 — Measure Project Progress

Obtain reliable project-progress information from the project management or engineering team.

Step 5 — Compare Costs With the Project Budget

Identify significant variances between actual and budgeted costs.

Step 6 — Calculate WIP and Recognised Revenue

Use the applicable accounting policy and contract analysis to determine the appropriate accounting treatment.

Step 7 — Reconcile Billing and Collections

Compare project progress with invoices issued, receivables and cash collected.

Step 8 — Review Project Margins

Update estimated total costs and forecast project profit.

Step 9 — Prepare the WIP Schedule

Document the calculations and retain supporting evidence for management reporting and financial reporting.

What Should a Construction WIP Report Include?

A useful construction WIP report should allow management to understand the position of every active project.

A typical WIP schedule can include:

WIP Report Field	Purpose
Project name/code	Identifies the contract
Contract value	Shows total contractual value
Original budget	Provides the initial benchmark
Revised budget	Reflects approved changes
Costs incurred	Shows actual costs to date
Estimated costs to complete	Forecasts remaining expenditure
Estimated total cost	Measures expected project cost
Percentage complete	Shows project progress
Revenue recognised	Tracks accounting revenue
Amount billed	Tracks invoicing
Amount collected	Tracks cash
Gross profit	Shows expected profitability
Gross margin	Measures project efficiency
Variations	Tracks scope changes
Retention	Monitors retained amounts

WIP Schedule Example for a UAE Contractor

Consider a project with:

• Contract value: AED 10 million
• Estimated total cost: AED 8 million
• Costs incurred: AED 4 million
• Cost-to-cost progress: 50%

If the relevant IFRS 15 analysis supports over-time revenue recognition using this measure of progress, the contractor would then assess the appropriate revenue recognised based on the contract’s transaction price and progress measurement.

This example demonstrates why project costing and revenue recognition should be connected but not treated as identical calculations.

Construction WIP Accounting Challenges for UAE Contractors

UAE construction companies often manage multiple projects with different customers, subcontractors, payment schedules and contract terms.

Common challenges include:

• Multiple active projects
• Retention amounts
• Contract variations
• Delayed certifications
• Late subcontractor invoices
• Incorrect project-cost allocation
• Advance payments
• Long-term contracts
• Cost overruns
• VAT documentation
• Corporate Tax reporting

The accounting team therefore needs good communication with project managers, procurement teams and commercial departments.

UAE VAT and Construction Accounting

VAT records should remain properly supported and reconciled with the company’s accounting records. UAE VAT legislation requires taxable persons to maintain records including records of supplies and imports, tax invoices, credit notes, issued documentation and relevant adjustments.

For construction businesses, this makes it important to maintain clear documentation for:

• Supplier invoices
• Subcontractor costs
• Customer invoices
• Credit notes
• VAT adjustments
• Project-related purchases

WIP itself should not be confused with VAT. VAT treatment depends on the relevant supply, transaction and applicable UAE VAT rules.

UAE Corporate Tax and Construction Businesses

Accurate construction accounting also supports Corporate Tax compliance. The UAE Ministry of Finance states that Corporate Tax is generally calculated from accounting income, with adjustments made to determine taxable income under the Corporate Tax rules. This makes reliable accounting records particularly important for construction companies with significant project costs, revenue and year-end adjustments.

Common WIP Accounting Mistakes Contractors Should Avoid

Contractors should watch for these common problems:

• Recording costs against the wrong project
• Ignoring accrued project costs
• Treating every invoice as revenue
• Failing to update estimated completion costs
• Ignoring approved or relevant variations
• Not reconciling subcontractor balances
• Mixing project costs with general overhead
• Failing to monitor retention
• Using outdated budgets
• Preparing WIP only at year-end

How to Prevent These WIP Accounting Errors

A monthly project accounting review is one of the most effective controls. Finance teams should compare accounting data with operational information and investigate material differences before closing the period. Project managers should also participate in WIP reviews because accountants may know what has been recorded financially, while project teams know what is happening on site.

Best Practices for Construction WIP Accounting

Maintain Project-Level Accounting

Every major cost should be traceable to the relevant project wherever practical.

Reconcile WIP Monthly

Do not wait until year-end to identify missing invoices, incorrect cost allocations or unexplained project balances.

Use Integrated Accounting and Project Management Systems

Connecting financial data with project information can reduce manual reconciliation and improve reporting.

Update Cost-to-Complete Estimates Regularly

A project budget created six months ago may no longer reflect current material prices, labour requirements or subcontractor costs.

Review WIP With Project Managers

Finance and operations should jointly review major changes in project costs and progress.

Maintain Supporting Documentation

Keep contracts, purchase orders, invoices, certificates, variations, progress reports and other supporting documents organised.

Separate Accounting Data From Project Performance Analysis

Financial reporting and operational project reporting serve different purposes. Management should understand how the two interact rather than treating them as interchangeable.

Construction WIP Accounting Example: UAE Contractor Case Study

Consider a UAE contractor working on an AED 10 million commercial construction contract.

At the reporting date:

• Contract value: AED 10 million
• Estimated total project cost: AED 8 million
• Costs incurred: AED 4 million
• Estimated remaining costs: AED 4 million
• Cost-based progress: 50%

The finance team compares this information with:

• Customer certifications
• Invoices issued
• Cash received
• Subcontractor balances
• Approved variations
• Project forecast

The WIP review identifies that the project remains broadly on its original cost forecast, but billing is running ahead of the accounting revenue position. Instead of treating the billing balance as profit, the finance team investigates the contract terms and applies the relevant IFRS 15 requirements.

What the Contractor Learns From the WIP Review

The review gives management visibility over:

• Project progress
• Expected project margin
• Billing differences
• Cost forecasts
• Cash requirements
• Potential project risks

This is the real purpose of effective construction project accounting: turning project data into useful financial information.

When Should a Contractor Use Professional WIP Accounting Support?

Professional support can be useful when a contractor:

• Manages several active projects
• Has complex long-term contracts
• Processes frequent variations
• Struggles to track project costs
• Needs monthly management accounts
• Is preparing for an audit
• Needs better VAT records
• Needs Corporate Tax support
• Wants reliable project profitability reports

The objective should not simply be to outsource bookkeeping. A good process should give management better visibility into costs, revenue, margins and project risks.

How Ripple Business Setup Can Help With Construction Accounting in the UAE

Ripple Business Setup can support UAE businesses with accounting and financial administration requirements, including bookkeeping, financial reporting, VAT support, Corporate Tax support and business accounting processes. For construction companies, structured accounting can help bring project costs, billing information, and financial reporting together so management can make better decisions. If you operate a construction business in the UAE and need clearer project costs, WIP reporting, and financial visibility, professional accounting support can help you maintain organised records and improve project-level reporting.

Contact Ripple Business Setup to discuss your construction accounting requirements.

• Phone: +971 50 593 8101
• Email: info@ripplellc.ae
• WhatsApp: +971 4 250 0833

FAQ

What is construction work in progress in accounting?

Construction work in progress refers to costs and activity associated with construction work that remains incomplete at a reporting date. The exact financial statement treatment depends on the applicable accounting requirements and contract circumstances.

How do you calculate construction WIP?

A simplified internal calculation can start with opening WIP, add current eligible project costs and deduct costs transferred to completed work. Contractors should separately assess revenue recognition and contract asset or liability balances.

What costs are included in construction WIP?

Common project costs include materials, direct labour, subcontractors and appropriately allocable project-related overheads. The final treatment depends on the company’s accounting policies and applicable standards.

Is WIP the same as unbilled revenue?

No. WIP and unbilled revenue are related concepts but are not automatically identical. Unbilled amounts can involve contract assets under IFRS 15, while WIP can refer to the project’s incomplete cost or work position.

What is the difference between WIP and work completed?

WIP generally represents unfinished project activity or costs at a reporting date. Work completed describes progress achieved. Accounting treatment depends on the contract and applicable financial reporting requirements.

How does WIP affect construction profit?

Accurate WIP and project accounting help contractors measure costs, project progress and expected margins. Poor WIP records can result in misleading project profitability.

How does IFRS 15 affect construction WIP accounting?

IFRS 15 determines how and when revenue from customer contracts is recognised. Where a performance obligation is satisfied over time, an appropriate measure of progress is used to determine revenue recognition.

How often should contractors prepare a WIP report?

Monthly WIP reporting is generally useful for contractors because it allows management to identify cost overruns, margin changes, billing differences and forecasting issues early.

What is the cost-to-cost method in construction accounting?

The cost-to-cost method measures progress by comparing costs incurred to date with estimated total contract costs. It can be an appropriate measure of progress when the relevant IFRS 15 requirements are satisfied.

Do UAE construction companies need WIP accounting?

Construction companies should maintain accounting records that accurately reflect their transactions and financial position. The precise WIP treatment depends on the company’s contracts, accounting framework and circumstances.

How does WIP accounting relate to UAE VAT?

WIP accounting and VAT are separate areas, although both rely on accurate transaction records and supporting documentation. UAE VAT legislation contains specific record-keeping requirements for taxable persons.

How does WIP accounting support UAE Corporate Tax compliance?

UAE Corporate Tax generally starts from accounting income before applying the relevant tax adjustments. Accurate project accounting therefore helps provide a reliable accounting base for Corporate Tax calculations and reporting.

Final Takeaway

Effective construction work in progress accounting gives UAE contractors much more than a year-end accounting balance. It helps management understand what has been spent, how much work has been completed, what remains to be done and whether expected project margins are still achievable. The strongest approach combines construction cost accounting, project-level bookkeeping, WIP schedules, progress measurement, billing reconciliation, and regular cost-to-complete reviews. When these processes work together, contractors can identify problems earlier, improve project profitability, and produce more reliable financial information.

Disclaimer: This article is for general educational purposes and does not constitute accounting, tax or legal advice. Construction contracts can have different accounting and tax treatments depending on their terms and circumstances. Businesses should obtain professional advice before making accounting, VAT or Corporate Tax decisions.