Schedule Performance Index(SPI)

A measure of schedule efficiency expressed as the ratio of earned value to planned value.

Cost

• ECO 2026 — PMP Examination Content Outline 2026
• PMBOK 7 — PMBOK Guide, 7th Edition
• ISO 21502 — ISO 21502:2020

• PMI, PMP Examination Content Outline (2026)
• PMI, A Guide to the Project Management Body of Knowledge (PMBOK Guide), 7th Edition
• ISO 21502:2020, Project, programme and portfolio management — Guidance on project management

Al Sawady, B. (2026). "Schedule Performance Index." Bayhas PM Lexicon. https://lexicon.bayhaspm.com/en/terms/schedule-performance-index (version 2026-08-30)

Version date: 2026-08-30