ISO 21506:2024/Amd 1:2026
(Amendment)Project, programme and portfolio management — Vocabulary — Amendment 1
General Information
- Abstract
- Status
- Published
- Publication Date
- 14-Sep-2026
- Technical Committee
- ISO/TC 258 - Project, programme and portfolio management
- Drafting Committee
- ISO/TC 258 - Project, programme and portfolio management
- Current Stage
- 6060 - International Standard published
- Start Date
- 15-Sep-2026
- Due Date
- 04-Mar-2027
- Completion Date
- 15-Sep-2026
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ISO 21506:2024/Amd 1:2026 - Project, programme and portfolio management — Vocabulary — Amendment 1
ISO 21506:2024/Amd 1:2026 - Management de projets, programmes et portefeuilles — Vocabulaire — Amendement 1
Overview
ISO 21506:2024/Amd 1:2026 is an amendment to the ISO 21506:2024 standard, which provides standardized vocabulary for project, programme, and portfolio management. Issued by the International Organization for Standardization (ISO), this amendment introduces updated definitions for key cost management terms used in the discipline. By refining terminology, ISO 21506:2024/Amd 1:2026 improves consistency and clarity across global project management practices.
Key Topics
- Budget at Completion: The updated definition clarifies this term as the “approved total cost to accomplish the work on a project, programme, control account, work package, or activity.” This increases precision in cost tracking and forecasting throughout the lifecycle of a project or programme.
- Estimate at Completion: The term now refers to the “forecasted total cost to accomplish the work on a project, programme, control account, work package, or activity,” helping organizations differentiate between initial budgets and evolving financial projections.
- Vocabulary Consistency: Aligns terminology with best practices in project, programme, and portfolio management, reducing ambiguity and fostering shared understanding among stakeholders.
- Global Harmonization: Supports international collaboration and communication by standardizing language among diverse teams, suppliers, and clients.
Applications
Organizations across sectors use ISO 21506:2024/Amd 1:2026 to:
- Establish Common Language: Ensure all project, programme, and portfolio teams speak a consistent language, streamlining handovers and documentation.
- Enhance Cost Management: Apply updated definitions to improve accuracy in cost estimating, budgeting, and forecasting, leading to better financial control.
- Support Stakeholder Communication: Facilitate clearer dialogue among project managers, sponsors, contractors, and auditors worldwide.
- Strengthen Project Governance: Use standardized terms to build solid foundations for project governance frameworks and audits.
- Integrate with Management Systems: Ensure alignment with other ISO standards and frameworks, enabling seamless integration into corporate management systems.
- Meet Client and Regulatory Expectations: Demonstrate adherence to globally recognized best practices, increasing confidence among clients and regulatory bodies.
Typical use cases include large infrastructure developments, IT projects, portfolio management in financial institutions, and public sector programme governance.
Related Standards
- ISO 21506:2024 - Project, programme and portfolio management - Vocabulary
- ISO 21500 - Guidance on project management
- ISO 21504 - Project, programme and portfolio management - Guidance on portfolio management
- ISO 21502 - Project, programme and portfolio management - Guidance on project management
- ISO/IEC 38500 - Governance of IT and related standards
- PMBOK® Guide (for reference to other frameworks and alignment with standardized vocabulary)
By implementing ISO 21506:2024/Amd 1:2026, organizations achieve greater clarity and effectiveness in their project, programme, and portfolio management activities - a crucial step toward advancing both strategic and operational objectives. For more information, or to purchase the official standard, visit ISO’s website.
Relations
- Effective Date
- 06-Sep-2025
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ISO 21506:2024/Amd 1:2026 - Project, programme and portfolio management — Vocabulary — Amendment 1
ISO 21506:2024/Amd 1:2026 - Management de projets, programmes et portefeuilles — Vocabulaire — Amendement 1
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Frequently Asked Questions
ISO 21506:2024/Amd 1:2026 is a standard published by the International Organization for Standardization (ISO). Its full title is "Project, programme and portfolio management — Vocabulary — Amendment 1". This standard covers: Project, programme and portfolio management — Vocabulary — Amendment 1
Project, programme and portfolio management — Vocabulary — Amendment 1
ISO 21506:2024/Amd 1:2026 is classified under the following ICS (International Classification for Standards) categories: 01.040.03 - Services. Company organization, management and quality. Administration. Transport. Sociology. (Vocabularies); 03.100.40 - Research and development. The ICS classification helps identify the subject area and facilitates finding related standards.
ISO 21506:2024/Amd 1:2026 has the following relationships with other standards: It is inter standard links to ISO 21506:2024. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
ISO 21506:2024/Amd 1:2026 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
International
Standard
ISO 21506
First edition
Project, programme and portfolio
2024-11
management — Vocabulary
AMENDMENT 1
AMENDMENT 1
2026-09
Management de projets, programmes et portefeuilles —
Vocabulaire
AMENDEMENT 1
Reference number
ISO 21506:2024/Amd.1:2026(en) © ISO 2026
ISO 21506:2024/Amd.1:2026(en)
© ISO 2026
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii
ISO 21506:2024/Amd.1:2026(en)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out through
ISO technical committees. Each member body interested in a subject for which a technical committee
has been established has the right to be represented on that committee. International organizations,
governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely
with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are described
in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the different types
of ISO document should be noted. This document was drafted in accordance with the editorial rules of the
ISO/IEC Directives, Part 2 (see www.iso.org/directives).
ISO draws attention to
...
Norme
internationale
ISO 21506
Première édition
Management de projets,
2024-11
programmes et portefeuilles —
Vocabulaire
AMENDEMENT 1
2026-09
AMENDEMENT 1
Project, programme and portfolio management — Vocabulary
AMENDMENT 1
Numéro de référence
ISO 21506:2024/Amd.1:2026(fr) © ISO 2026
ISO 21506:2024/Amd.1:2026(fr)
DOCUMENT PROTÉGÉ PAR COPYRIGHT
© ISO 2026
Tous droits réservés. Sauf prescription différente ou nécessité dans le contexte de sa mise en œuvre, aucune partie de cette
publication ne peut être reproduite ni utilisée sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique,
y compris la photocopie, ou la diffusion sur l’internet ou sur un intranet, sans autorisation écrite préalable. Une autorisation peut
être demandée à l’ISO à l’adresse ci-après ou au comité membre de l’ISO dans le pays du demandeur.
ISO copyright office
Case postale 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Genève
Tél.: +41 22 749 01 11
E-mail: copyright@iso.org
Web: www.iso.org
Publié en Suisse
ii
ISO 21506:2024/Amd.1:2026(fr)
Avant-propos
L’ISO (Organisation internationale de normalisation) est une fédération mondiale d’organismes nationaux
de normalisation (comités membres de l’ISO). L’élaboration des Normes internationales est en général
confiée aux comités techniques de l’ISO. Chaque comité membre intéressé par une étude a le droit de faire
partie du comité technique créé à cet effet. Les organisations internationales, gouvernementales et non
gouvernementales, en liaison avec l’ISO participent également aux travaux. L’ISO collabore étroitement avec
la Commission électrotechnique internationale (IEC) en ce qui concerne la normalisation électrotechnique.
Les procédures utilisées pour élaborer le présent document et celles destinées à sa mise à jour sont
décrites dans les Directives ISO/IEC, Partie 1. Il convient, en particulier, de prendre note des différents
critères d’approbation requis pour les différents types de documents ISO. Le présent document a
été rédigé conformément aux règles de rédaction données dans les Directives ISO/IEC, Partie 2 (voir
www.iso.org/directives).
L’ISO attire l’attention sur le fait que la mise en application du présent document peut entraîner l’utilisation
d’un ou de plusieurs brevets. L’ISO ne prend pas position quant à la preuve, à la validité et à l’applicabilité de
tout droit de brevet revendiqué à cet égard. À la da
...