Understanding the Percentage of Completion Method Formula

May 30, 2025
Jason Berwanger
Accounting

Learn how the percentage of completion method formula works to recognize revenue and expenses in long-term projects, ensuring accurate financial reporting.

Understanding the Percentage of Completion Method Formula

Managing the finances of long-term projects can feel like navigating a ship through a foggy night. You need a reliable compass to guide you, and that's where the percentage of completion method comes in. This accounting method helps you recognize revenue and expenses proportionally as work progresses, providing a much clearer view of your project's financial health at any given point. This guide will walk you through the percentage of completion method formula, showing you how it works and when it's the right choice for your business. We'll also explore the benefits and challenges of this method, offering practical tips for successful implementation. Whether you're in construction, software development, or any industry with long-term projects, understanding this method is key to accurate financial reporting.

Key Takeaways

  • Track project financials progressively: The percentage of completion method offers a more realistic view of your company's financial health during long-term projects by recognizing revenue and expenses as work is completed.
  • Accurate estimations are crucial: Reliable cost and progress estimations are the foundation of this method. Regularly review and adjust your initial projections to maintain accurate financial reporting.
  • Use the right tools: Streamline the process and reduce errors with accounting software designed to handle the complexities of the percentage of completion method. Look for features that automate calculations, track progress, and integrate with project management tools.

What is the Percentage of Completion Method?

The percentage of completion method is an accounting method used to recognize revenue and expenses on long-term projects. Instead of recording all revenue and costs at the end, this method distributes them proportionally as the work progresses. This gives a more accurate financial picture of the project's profitability at any given point, rather than waiting until the project ends. Think of it like tracking your progress on a road trip—you wouldn't wait to log your miles until you arrive at your destination. Similarly, the

This approach is particularly useful for projects spanning multiple accounting periods. Imagine a construction company building a bridge over two years. Using the percentage of completion method, they can recognize revenue and expenses related to the bridge's construction during both years, reflecting the ongoing progress. This aligns revenue with the actual work performed, providing a clearer view of the company's financial health. This is a more realistic representation than waiting for project completion to recognize everything at once, especially for complex, multi-year projects. For more technical details, explore Investopedia's explanation.

Understanding the Percentage of Completion Formula

The percentage of completion method recognizes revenue and expenses tied to long-term projects. Instead of booking all revenue and costs at the end, this method distributes them across the project's timeline based on work completed. This gives a more accurate financial picture of a company's performance, especially for projects spanning multiple accounting periods.

Formula Components

At its core, the percentage of completion formula is simple:

Percentage of Completion = (Costs Incurred to Date / Total Estimated Costs) * 100%

Let's break down each component:

  • Costs Incurred to Date: This represents the total costs spent on the project up to a specific point. Think of it as a snapshot of your project expenses at a given moment. It includes direct costs like materials and labor.
  • Total Estimated Costs: This is your best projection of all costs needed to complete the project. Accurate estimation is crucial for the reliability of the percentage of completion method. For more insights, explore our blog on accurate cost estimation.

Calculation Steps

Calculating revenue recognition using the percentage of completion method involves a few straightforward steps:

  1. Calculate the Percentage of Completion: Divide the costs incurred to date by the total estimated costs and multiply by 100%. This tells you the percentage of the project that's finished based on cost.
  2. Determine Revenue Recognized: Multiply the percentage of completion by the total contract value. This is the revenue you can recognize for the period. For a deeper dive into revenue recognition, explore our resources on ASC 606 compliance.
  3. Calculate Gross Profit: Subtract the costs incurred to date from the revenue recognized. This shows the profit earned on the project for the period. See how HubiFi can automate these calculations.

By following these steps, you can accurately track revenue, expenses, and profit throughout a project's lifecycle.

When to Use the Percentage of Completion Method

This method offers a way to recognize revenue as a project progresses, rather than waiting until it’s finished. This makes it particularly useful for long-term projects, providing a more accurate financial picture of your business's performance. But when is it the right choice? Let's break it down.

Applicable Industries and Projects

The percentage of completion method is especially helpful in industries with long-term projects. Think construction, engineering, and software development. In construction, for example, a project might involve building a bridge over several years. Using the percentage of completion method, the construction company can recognize revenue and expenses incrementally as the bridge is built, rather than waiting until the entire project is complete. This provides a more realistic view of the company's financial performance during the project's timeframe. Similarly, in software development, this method allows companies to recognize revenue as they complete different phases of a project, like design, development, and testing. Learn more about how to use the percentage of completion method in accounting.

This method isn't limited to just those industries, though. Any company working on long-term, complex projects where reliably measuring progress is possible can benefit. This could include large-scale manufacturing, certain types of consulting engagements, or even specialized research and development projects. The key is that the project must have a defined beginning and end, and you must be able to reasonably estimate the total costs and progress. If you're unsure whether this method is right for your business, consider scheduling a demo with HubiFi to discuss your specific needs and explore how our automated solutions can help streamline your revenue recognition process. For further reading, QuickBooks offers a comprehensive guide on the percentage of completion method.

Advantages of the Percentage of Completion Method

The percentage of completion method offers several benefits, especially for businesses managing long-term projects. Let's explore two key advantages: accurate revenue recognition and improved financial reporting.

Accurate Revenue Recognition

Instead of waiting until the project's end, the percentage of completion method recognizes revenue, expenses, and profit incrementally. This provides a more realistic view of your company's financial performance. Think of it like building a house: if you're 25% complete, you should acknowledge some revenue, even before handing over the keys. This method, aligned with IFRS 15, ensures financial statements reflect the ongoing work and value created throughout the project. As the Corporate Finance Institute explains, this ties financial reporting directly to project progress, often tracked monthly. This ensures revenue and expenses are recorded as work happens, not just at the finish line. For a deeper dive into revenue recognition, check out HubiFi's blog for more insights.

Improved Financial Reporting

The percentage of completion method creates more insightful financial statements. Imagine trying to understand a company's performance if they only reported revenue from multi-year projects at the very end—it would be nearly impossible to assess their financial health during the project. By recognizing revenue and expenses as the project progresses, this method offers a clearer picture of the company's financial standing. This is particularly valuable for businesses with long-term, complex projects, where a snapshot of work in progress is essential. HubiFi highlights how this method provides a more comprehensive view of financial performance for complex projects. This enhanced transparency allows stakeholders to make informed decisions based on a realistic understanding of the company's financial position. Ready to streamline your financial reporting? Schedule a demo with HubiFi to see how we can help.

Challenges and Limitations

While the percentage of completion method offers a more accurate view of a project’s profitability over time, it also presents some challenges. Understanding these limitations is key to successful implementation.

Estimation Errors and Inaccuracies

This method relies heavily on estimating total project costs and the percentage of completion at any given point. Accurate cost estimation is difficult. Unexpected issues, change orders, and fluctuating material prices can all impact initial projections. If your cost estimates are significantly off, your revenue recognition will also be inaccurate, potentially impacting financial reporting. Comparing actual costs to expected total costs, as suggested by Axley Rode, is a common practice, but the accuracy of those initial projections is critical.

Cash Flow Considerations

Another challenge arises from the potential disconnect between recognized revenue and actual cash collected. The percentage of completion method can lead to overbilling (billed amount exceeds recognized revenue) or underbilling (billed amount is less than recognized revenue). Both scenarios can create cash flow issues. For example, if you’ve recognized a significant portion of revenue but haven’t yet billed the client, you might find yourself short on cash to cover ongoing project expenses. Successfully managing these complexities, as QuickBooks points out, is crucial for businesses with long-term projects.

Best Practices for Implementation

Successfully implementing the Percentage of Completion method relies on careful planning and consistent execution. Here’s how to get it right:

Accurate Cost Estimation

Getting your cost estimations right is the foundation of this method. Inaccurate cost estimates lead to inaccurate revenue recognition, so start with a realistic budget. This includes not only the initial estimate but also accounting for potential changes throughout the project lifecycle. Regularly review and refine your cost projections to reflect any unexpected expenses or savings. This ensures your revenue recognition stays aligned with the project's actual progress. Remember, this method requires recognizing revenue and expenses periodically, based on the proportion of work completed, as Investopedia explains.

Regular Progress Assessments

Consistent progress assessments are key to applying the Percentage of Completion method effectively. Track costs incurred to date and compare them against your total estimated project cost. This ratio helps determine the percentage of the project completed, which then informs the revenue and profit recognized in each period. Regularly monitoring allows you to catch any deviations early on and adjust your revenue recognition accordingly. This video offers a helpful breakdown of how progress is measured and applied to revenue calculations.

Robust Record-Keeping

Detailed record-keeping is essential for a smooth and auditable process. From identifying the contract and estimating total revenue and costs to measuring progress and recording journal entries, meticulous documentation is crucial. Maintaining accurate records not only simplifies the calculation process but also ensures you can justify your revenue recognition figures if needed. This also helps you adapt to changes as the project evolves. Think of your records as a roadmap of the project's financial progress, providing a clear audit trail from start to finish. For a comprehensive overview of the steps involved, check out this resource. This video also emphasizes the importance of accurate record-keeping and adaptability.

Accounting Standards and Compliance

ASC 606 and IFRS 15 Requirements

Staying compliant with accounting standards is crucial when using the percentage of completion method. Both U.S. GAAP (Generally Accepted Accounting Principles) and IFRS (International Financial Reporting Standards) address this with ASC 606 and IFRS 15, respectively. These standards share a core principle: recognize revenue in a way that reflects the transfer of goods or services to customers for the expected compensation. Simply put, as your company completes portions of a project, you recognize the revenue earned for those portions.

ASC 606 offers specific guidance, especially for businesses using the percentage of completion method. For example, if a construction company builds a bridge and installs lighting on that same bridge under one contract, the same percentage of completion measure should apply to both tasks. This ensures consistent revenue recognition across all related performance obligations within a single contract. The chosen measurement should also accurately reflect the work completed and transferred to the customer. So, if 25% of the bridge is complete, and the lighting installation is directly tied to the bridge's progress, then 25% of the revenue allocated to both tasks should be recognized.

Another key aspect of these standards focuses on recognizing revenue over time. One criterion is that your company's work shouldn't create an asset you could repurpose for something else. Let's say you're developing custom software for a client. If that software is specifically designed for their needs and has no other use for your business, it meets this criterion. Additionally, the customer should benefit from the work as it progresses. With the software example, if the client can use and gain value from portions of the software during development, this further supports recognizing revenue over time. Deloitte offers further details on IFRS 15 requirements.

Following these standards isn't just about compliance; it's about presenting a clear and accurate financial picture. When applying the percentage of completion method, adhering to ASC 606 and IFRS 15 is essential. These standards offer clear guidelines on revenue recognition, helping you identify performance obligations and determine when they're met. This ensures reliable financial reporting and helps you avoid potential issues during audits. By understanding and complying with these standards, you build trust with investors and stakeholders and support informed business decisions based on solid financial data.

Impact on Financial Statements

This section explores how the percentage of completion method influences your financial statements, focusing on revenue recognition and balance sheet implications.

Revenue Recognition Effects

The percentage of completion method significantly impacts how revenue is recognized for long-term projects. Instead of recognizing all revenue at the end, this method spreads revenue recognition throughout the project's lifecycle, aligning with accounting standards like IFRS 15. This provides a more accurate and timely view of financial performance, especially for projects spanning multiple reporting periods. By recognizing revenue progressively, the method ensures your financial statements mirror the project's ongoing progress, offering a clearer picture of its financial contribution over time. This approach avoids the sudden influx of revenue upon completion, providing a smoother and more realistic financial representation.

Balance Sheet Considerations

The percentage of completion method also has important implications for your balance sheet. Because revenue and expenses are recognized incrementally, the balance sheet reflects the project's evolving financial status. This requires careful tracking of costs and progress, leading to a more nuanced understanding of the project's financial position. However, the reliance on estimations can introduce complexities. Changes in project scope or unexpected cost overruns require adjustments to these estimates, potentially affecting the accuracy of your reports. Differences between client billing and recognized revenue can also impact cash flow. Maintaining accurate revenue recognition is therefore essential for the financial health of your company.

Tools and Software for Calculations

Using the right tools can simplify applying the percentage of completion method and minimize manual data entry. Let's explore some essential software features and integrations that streamline this process.

Accounting Software Features

Look for accounting software that tracks all the moving parts of your contracts: the details, costs, revenue earned, and the percentage of completion for each. The software should generate reports and invoices based on revenue recognition rules and contract terms. This level of automation not only saves you time but also reduces the risk of errors. For example, Replicon offers built-in support for revenue recognition standards like IFRS 15 and ASC 606, making compliance much easier. Having software that handles these complex calculations ensures your financial data is accurate and reliable.

Beyond these core features, consider software with robust reporting capabilities. You'll want to easily see the progress of your projects, revenue recognized, and costs incurred. This information is crucial for making informed business decisions and ensuring accurate financial reporting. Some software even allows you to customize reports to meet your specific needs, giving you a tailored view of your financial performance.

Project Management Integrations

Integrating your project management tools with your accounting software is a game-changer. Accurate cost and completion estimates are the foundation of the percentage of completion method. This integration ensures that all project data is current and accurately reflected in your financial reports.

Think of it this way: your project management software becomes the single source of truth for project progress. As your team updates project milestones and costs, that information automatically flows into your accounting system. This real-time data exchange enhances the accuracy of your percentage of completion calculations, giving you a clearer picture of your financial performance. This integration eliminates the need for manual data entry and reconciliation, freeing up your time for more strategic tasks. For a deeper dive into how this integration works, check out resources like FreshBooks, which offers helpful explanations and examples.

Common Misconceptions

It's easy to misunderstand the percentage of completion method, especially if you're new to this accounting practice. Let's clear up some common misconceptions:

  • Myth: The percentage of completion method recognizes all project revenue at the project's end.
    Reality: This method recognizes revenue, expenses, and profit incrementally as the project progresses. This gives you a more accurate financial picture throughout the project lifecycle.

  • Myth: Accurate cost estimation isn't important for this method.
    Reality: Using consistent and reliable cost estimation methods is crucial. Accurate estimations ensure correct revenue and expense calculations, forming the basis of your financial reporting.

  • Myth: The percentage of completion method is simple to apply.
    Reality: The core concept is straightforward, but applying the method can be complex. For long-term projects, determining the percentage of completion often requires detailed assessments and careful estimates.

  • Myth: The percentage of completion method only applies to the construction industry.
    Reality: While common in construction, this method applies to any sector with long-term contracts, including software development and large-scale manufacturing. See our guide for more details.

  • Myth: This method doesn't offer valuable insights into financial performance.
    Reality: The percentage of completion method provides a much clearer view of your company's financial health during long-term projects. This allows for better decision-making and financial planning. The QuickBooks guide offers a helpful overview.

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Frequently Asked Questions

Why use the percentage of completion method instead of waiting until the end of a project? The percentage of completion method gives you a much clearer picture of your financial health during a long-term project. Recognizing revenue and expenses as you go provides more useful, timely information than waiting until the project is finished, especially for multi-year projects. This real-time insight allows for better decision-making and financial planning.

How do I determine the percentage of a project that's complete? The most common way is to compare the costs incurred to date against your total estimated costs for the project. For example, if you've spent $50,000 and estimate the total project cost to be $200,000, you're 25% complete. However, other reliable methods can be used if they better reflect the project's progress.

What are the biggest challenges when using this method? The biggest challenges are accurate cost estimation and managing cash flow. Getting your initial cost estimates wrong throws off all your calculations. Also, recognizing revenue doesn't mean you've received the cash, so you need to carefully manage billing and expenses to avoid cash flow problems.

Is the percentage of completion method required for all long-term projects? No. While it's often the best approach for long-term projects, it's not always required. Generally Accepted Accounting Principles (GAAP) and International Financial Reporting Standards (IFRS) provide guidance on when to use this method. If you're unsure, it's always best to consult with a financial professional.

What kind of software can help with the percentage of completion method? Many accounting software packages and project management tools can simplify calculations and reporting. Look for software that integrates project management and accounting functions, automates revenue recognition calculations, and offers robust reporting features. This integration streamlines the process and reduces the risk of errors.

Jason Berwanger

Former Root, EVP of Finance/Data at multiple FinTech startups

Jason Kyle Berwanger: An accomplished two-time entrepreneur, polyglot in finance, data & tech with 15 years of expertise. Builder, practitioner, leader—pioneering multiple ERP implementations and data solutions. Catalyst behind a 6% gross margin improvement with a sub-90-day IPO at Root insurance, powered by his vision & platform. Having held virtually every role from accountant to finance systems to finance exec, he brings a rare and noteworthy perspective in rethinking the finance tooling landscape.