akar.earthProject start date: Definition
What is a project start date in carbon standards? How it is defined for ARR and REDD+, why validation deadlines depend on it, and common evidence gaps.
A project start date is the date on which a carbon project began the activities that generate emission reductions or removals. For ARR it is usually the start of site preparation or planting. For REDD+ it is when protection activities began.
Why it matters
The start date anchors several rules at once. It typically marks the beginning of the crediting period, so no credits can be claimed for earlier years. It triggers deadlines: programmes such as Verra require projects to complete validation, or at least list in the pipeline, within a set time after the start date. It also matters for additionality: projects that started long before seeking carbon finance must show that carbon revenue was seriously considered from the beginning.
How it is evidenced
Validation bodies look for documents that prove when activities started and that carbon was planned:
- Planting records, nursery invoices, field reports and dated photographs.
- Satellite imagery showing land condition before and after.
- Board minutes, feasibility studies or emails showing carbon finance was considered before or at the start.
- Community agreements and permits with dates.
Our VCS registration process page covers the deadlines, and our PDD development service helps assemble the evidence.
Indonesia angle
Many Indonesian projects begin as community planting, CSR or rehabilitation programmes and only later look for carbon revenue. That history is valuable, but it can create problems if the start date is too far back or poorly documented. Smallholder programmes that add farmers over several years often use a grouped project design, where each new instance has its own start date. Permit dates under PBPH or social forestry should also be checked against the claimed start.
Common mistakes
- Choosing a start date that falls outside the validation deadline.
- Claiming an early start date to capture more growth without proof of carbon intent.
- Using different start dates in the PDD, financial model and community agreements.
Related terms
See crediting period, additionality and validation, or browse the carbon standards hub.
Frequently asked questions
What counts as the start date for a tree-planting project?
Usually the date when activities that generate removals begin, such as site preparation or planting. The methodology and programme rules define it, so check the current VCS Standard or equivalent.
Can a project register years after it started?
Only within the deadlines the programme sets for validation or pipeline listing after the start date, and with evidence that carbon finance was considered from the beginning.