CDP Reporting Timeline 2026: Key Deadlines
The complete CDP reporting timeline for 2026. The CDP deadline 2026 for company submissions is 31 July — but the work that gets a strong score begins in January with registration and runs through to scores published in December.
The full CDP deadline 2026 calendar
Registration & Invitations
CDP platform opens for new registrations. Companies receive investor and supply chain invitations.
Key Tasks
- Register on CDP platform
- Confirm reporting programmes (Climate, Water, Forests)
- Set up user access and permissions
- Review previous year changes and guidance
Planning & Preparation
Establish data collection framework and internal project teams.
Key Tasks
- Form internal CDP project team
- Map data collection requirements
- Identify key stakeholders and data owners
- Plan consultant engagement if required
Data Collection
Intensive data gathering period for emissions, governance, targets and risk assessments.
Key Tasks
- Collect Scope 1, 2 and 3 emissions data
- Gather governance and management information
- Document climate-related risks and opportunities
- Compile target-setting and progress data
Questionnaire Completion
Complete CDP questionnaires with detailed responses and supporting evidence.
Key Tasks
- Complete relevant CDP questionnaire sections
- Provide detailed narrative responses
- Upload supporting documentation
- Internal review and quality assurance
Final Review & Submission
Final review, approval and submission before July 31st deadline.
Key Tasks
- Executive review and sign-off
- Final data verification
- Submit responses via CDP platform
- Confirmation of successful submission
CDP Scoring Process
CDP scoring partners review submissions and assign scores.
Key Tasks
- CDP scoring methodology applied
- Independent verification checks
- Benchmarking against sector peers
- Quality assurance of scoring process
Results & Publication
CDP scores published and feedback reports delivered to companies.
Key Tasks
- Receive CDP score and detailed feedback
- Access benchmarking and sector analysis
- Review areas for improvement
- Plan next year's reporting strategy
Critical CDP deadline 2026 dates to diary
How to plan against the CDP deadline 2026
The headline date is straightforward: companies responding to the CDP 2026 disclosure cycle must submit their questionnaire by 31 July 2026. The harder question is when the work needs to start. For organisations new to CDP, our reading is that meaningful data collection should begin no later than the registration window in January — six months feels generous and is usually not.
The reason is the questionnaire's structure. The Climate, Water and Forests modules ask for activity data across the full prior calendar year, often with intensity ratios and target progress that depend on figures the finance team owns rather than the sustainability team. Pulling those together inside a single quarter without pre-existing reporting infrastructure is the most common cause of incomplete submissions and depressed CDP scores.
What the CDP deadline 2026 means for first-time disclosers
First-time companies typically underestimate two things: the volume of supplier engagement required for Scope 3 categories, and the lead time for board sign-off on targets and transition narratives. If either is on the critical path to 31 July, budget weeks not days. CDP responses that go in incomplete still score — just badly — and the score appears against the company's name on the public CDP website for the year ahead.
Where the CDP deadline 2026 sits in the wider UK reporting calendar
For UK companies, the CDP cycle increasingly runs alongside three other obligations. SECR disclosures sit in the annual report and reuse the same Scope 1 and 2 figures; ESOS Phase 4 audits (deadline 5 December 2027) generate energy data that flows into both; and the new UK Sustainability Reporting Standards (UK SRS) set the destination architecture all three datasets are now moving toward. Organisations planning a single CDP submission in isolation are paying twice for the same measurement.
Our broader analysis of how these regimes connect is in the ESG reporting requirements in the UK intelligence hub. For the CDP-specific framework, see our CDP reporting framework guide; for scoring methodology, see CDP environmental reporting.