How to Prepare a Construction WIP Report: A Step-by-Step Guide

January 19, 2026

In the construction industry, financial clarity is critical. Projects often span months or years, involve multiple stakeholders, and require significant upfront investment. To keep everything on track, contractors rely on a powerful tool: the Work-in-Progress (WIP) report. While many understand its importance, fewer know how to prepare one correctly. This guide will walk you through the process of creating an accurate WIP report and explain why it’s essential for your business.

What Is a WIP Report?

A Work-in-Progress (WIP) report, also called a WIP schedule, is a financial document that tracks the status of active construction projects. It compares actual costs and billings to the estimated contract value and progress, providing a real-time snapshot of financial performance. The WIP report helps contractors answer critical questions:

Understanding these metrics is vital for managing cash flow, ensuring profitability, and maintaining compliance with accounting standards.

Why Preparing a WIP Report Matters

Before diving into the steps, let’s clarify why this process is so important:

Step-by-Step Guide to Preparing a WIP Report

Step 1: Gather Key Project Data

Start by collecting accurate, up-to-date information for each active job. You’ll need:

Accuracy at this stage is critical. Incomplete or outdated data will lead to misleading results.

Step 2: Calculate Percentage of Completion

The percentage of completion shows how far along the project is based on costs incurred. The most common formula is:[\text = \frac{\text}{\text}]

This method assumes costs are a reliable indicator of progress, which is generally true for most construction projects.

Step 3: Determine Earned Revenue

Once you know the percentage of completion, calculate the revenue earned to date:[\text = \text \times \text]

This figure represents the amount of revenue you should recognize based on work completed, regardless of how much you’ve billed.

Step 4: Compare Earned Revenue to Billings

Now, compare the earned revenue to the billings to date:

This comparison is crucial because it reveals whether you’re ahead or behind in billing relative to progress. Overbilling can improve short-term cash flow but may lead to profit fade later. Underbilling, on the other hand, ties up cash and can strain resources.

Step 5: Compile the WIP Schedule

Create a table that includes the following columns for each job:

This table becomes your WIP report—a comprehensive view of your active projects’ financial health.

Best Practices for Preparing WIP Reports

Common Mistakes to Avoid

Why Accuracy Matters

An inaccurate WIP report can mislead stakeholders, distort financial statements, and jeopardize bonding capacity. Conversely, a well-prepared WIP report builds trust with lenders, sureties, and clients while giving you the confidence to make informed decisions.

Final Thoughts

Preparing a WIP report may seem complex, but it’s one of the most valuable tools in construction accounting. By following these steps—gathering accurate data, calculating progress, determining earned revenue, and compiling a clear schedule—you can gain real-time visibility into your projects’ financial health.

In an industry where margins are tight and risks are high, mastering WIP reporting isn’t optional—it’s essential. A well-prepared WIP report not only keeps your projects on track but also strengthens your company’s financial foundation.

Send me an email at bryce.wisan@levvigo.com and I'll be happy to send you an Excel template of a WIP report.

Bryce Wisan, CPA, CCIFP