Cashflow for Project Contractors

Project Business Management

SERIES ARTICLE

By Oliver F. Lehmann

Munich, Germany

“Rule #82: Wrong decisions made early can be recovered from. Right decisions made late cannot correct them.”
– From: 100 Rules for NASA Project Managers[1]

Summary

Contractor projects rarely fail on paper. They fail in cash. While profit is realized at the end, liquidity is required every day. In Project Business, payment structures and delays force contractors to finance their own work, often beyond safe limits. The critical question is not whether a project is profitable, but whether the organization can survive its maximum negative cash position. Projects that cannot be carried financially must be renegotiated, slowed down, or rejected. Cash flow is not a reporting metric – it is the boundary between success and failure.

Introduction

Project management literature traditionally revolves around scope, schedule, and cost. These dimensions define delivery performance, and for internal projects, they are often sufficient. In contractor environments, however, they leave out the decisive constraint under which projects are actually executed: liquidity.

For contractors, the central question is not only whether the work can be delivered, but whether the organization can sustain the financial burden of delivering it. This is where projects cease to be purely technical undertakings and become business operations.

Cash flow is therefore not a secondary accounting perspective. It is the condition that determines whether delivery efforts can be maintained over time.

It is entirely possible for a project to be profitable and still place the contractor under existential pressure. This is not an exception, but a direct consequence of how customer projects are typically structured. The underlying dynamics deserve closer examination.

The Structural Role of the Contractor

The contractor’s role in Project Business is defined not only by delivery responsibility, but by financial exposure. Unlike internal projects, where funding is secured upfront, contractor projects are executed under conditions where cost is certain but payment is conditional and delayed. This places the contractor in a structurally exposed position that goes beyond operational responsibility.

This structural imbalance does not exist in isolation. It is part of a broader risk profile that distinguishes Project Business from most internal project environments.

In internal projects, funding is typically secured before execution begins. The organization decides to invest, allocates a budget, and carries the financial exposure within its own boundaries. Liquidity may still matter at the corporate level, but it is rarely a constraint at the level of an individual project.

Project Business works differently.

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Editor’s note: This series of articles is by Oliver Lehmann, author of the book “Project Business Management” (ISBN 9781138197503), published by Auerbach / Taylor & Francis in 2018. See author profile below.

How to cite this article: Lehmann, O. F. (2026). Cashflow for Project Contractors, Project Business Management series article, PM World Journal, Vol. XV, Issue IV, April. Available online at https://pmworldjournal.com/wp-content/uploads/2026/04/pmwj163-Apr2026-Lehmann-Cashflow-for-Project-Contractors.pdf

About the Author

Oliver F. Lehmann

Munich, Germany

Oliver F. Lehmann, MSc, ACE, PMP, is a project management educator, author, consultant, and speaker. In addition, he is the owner of the website Project Business Foundation, a non-profit initiative for professionals and organizations involved in cross-corporate project business.

He studied Linguistics, Literature, and History at the University of Stuttgart and Project Management at the University of Liverpool, UK, where he holds a Master of Science Degree (with Merit). Oliver has trained thousands of project managers in Europe, the USA, and Asia in methodological project management, focusing on certification preparation. In addition, he is a visiting lecturer at the Technical University of Munich.

He has been a member and volunteer at PMI, the Project Management Institute, since 1998 and served as the President of the PMI Southern Germany Chapter from 2013 to 2018. Between 2004 and 2006, he contributed to PMI’s PM Network magazine, for which he provided a monthly editorial on page 1 called “Launch,” analyzing troubled projects around the world.

Oliver believes in three driving forces for personal improvement in project management: formal learning, experience, and observations. He resides in Munich, Bavaria, Germany, and can be contacted at oliver@oliverlehmann.com.

Oliver Lehmann is the author of the books:

- “Situational Project Management: The Dynamics of Success and Failure” (ISBN 9781498722612), published by Auerbach / Taylor & Francis in 2016
- “Project Business Management” (ISBN 9781138197503), published by Auerbach / Taylor & Francis in 2018.

His previous articles and papers for PM World Journal can be found here: