KNOW WHAT YOUR
CARBON
ACTUALLY COSTS
Calculate your compliance exposure in 90 seconds. Trade verified credits with registry-backed retirement certificates.
Carbon Liability Estimator
Enter your annual emissions by scope. We calculate your compliance exposure against current market prices and flag CBAM risk thresholds.
Nature-Based vs. Tech Removal
Not all carbon credits are interchangeable. Registry, permanence class, and additionality methodology determine whether a retirement certificate will survive an audit.
Largest voluntary registry. Strong on REDD+ forestry and blue carbon. Buffer pool mechanism guards against reversal.
Premium co-benefit verification. Preferred by ESG fund managers requiring social impact alongside carbon retirement.
Mandatory compliance instrument under EU ETS. Only credit type accepted for CBAM obligations. Exchange-traded with daily settlement.
Carbon dioxide removal via biochar, enhanced weathering, and direct air capture. Permanent removal with engineering warranties.
Counsel note: Only EU ETS allowances satisfy CBAM obligations under Regulation (EU) 2023/956. Voluntary credits — regardless of registry — cannot substitute for compliance instruments in EU regulatory submissions. Offset can source both; your compliance briefing will flag which you require.
The Chain of Custody
Behind Every Retirement
Every credit on Offset is registry-backed. This is the exact audit trail your CDP disclosure officer and external verifier will follow.
Project Validation
Third-party auditor validates methodology, baseline, and additionality against registry standard. Average 90-day validation window.
Serial Number Issuance
Registry issues unique serial numbers to each verified tonne. Numbers are immutable, publicly searchable, and linked to the originating project.
Transfer & Trade
Credits transfer between registry accounts with full chain-of-custody logging. Every transaction timestamped and counterparty-identified.
Retirement & Certificate
Buyer initiates retirement. Registry marks serial numbers as permanently cancelled — irreversible. Retirement certificate generated with your entity name, date, and tonne count.
Audit-Proof Before
Your Next CDP Cycle
Three things your external verifier will ask for. Offset provides all three, formatted to regulatory specification, within 48 hours of retirement.
Retirement Certificate
PDF + XML- Beneficiary entity name
- Serial number range
- Project ID and location
- Vintage year
- Retirement date and time
- Registry confirmation ID
Chain of Custody Log
IMMUTABLE- Project validation report link
- All transfer events timestamped
- Counterparty identifiers
- Registry account trail
- ISO 14064-3 formatted
- API-accessible endpoint
CDP Disclosure Package
CDP READY- CDP C9 / C11 formatted
- Scope attribution mapping
- Voluntary vs. compliance split
- Offset methodology statement
- Auditor-ready footnotes
- Prior year comparison
Ready for your next disclosure cycle?
Your compliance briefing includes a pre-formatted retirement plan mapped to your CDP C9 fields.
Registry-Connected
Market Rates
Compliance Outcomes
"We retired 12,400 tCO₂ against our CBAM obligation and had the certificate in our auditor's hands within 48 hours. First time we've gone into a CDP cycle without a documentation gap."
"The nature-based portfolio we built through Offset passed our ESG fund's independent verification in Q3. Registry traceability was the deciding factor — every serial number held up."