CORSIA Compliance and Carbon Offsetting for Business Aviation Operators

CORSIA creates specific emissions monitoring, reporting, verification, and offsetting requirements for international aviation operations within its scope. For business aviation operators, understanding the difference between emissions reporting and offsetting obligations is essential when planning compliance.

This guide explains the current CORSIA framework, operator MRV requirements, route-based offsetting, eligible emissions units, and the relationship between regulatory and voluntary carbon offsetting.

Key Takeaways

• What is the CORSIA baseline for 2024–2035?
• Which CORSIA phase applies in 2026?
• Does CORSIA apply equally to every ICAO Member State?
• Which business aviation operators fall within CORSIA MRV requirements?
• How does the route-based approach determine offsetting obligations?
• Which emissions units can operators use for CORSIA compliance?

What are Carbon Offsetting Programs?

Carbon offsetting allows an operator or organization to compensate for defined CO₂ emissions through emissions-reduction or removal projects represented by carbon credits. In aviation, voluntary offsetting sits alongside regulatory frameworks such as CORSIA, but the two are not interchangeable.

Voluntary programs allow operators or clients to address emissions beyond regulatory obligations. CORSIA, by contrast, establishes specific monitoring, reporting, verification and offsetting requirements for international aviation within its scope.

For business aviation operators, the first step is therefore to determine which regulatory requirements apply before selecting any carbon credits or voluntary offsetting strategy.

Purpose of Carbon Offsetting Programs in Sustainable Finance

Carbon offsetting programs serve as strategic financial instruments within sustainable finance frameworks, enabling business flight operators to internalize the environmental costs of their operations. By integrating carbon credits into their financial strategies, operators align with Environmental, Social, and Governance (ESG) criteria, which are critical for attracting ESG-focused investors and meeting stakeholder expectations. These programs facilitate:

• Risk Mitigation: Hedging against future regulatory costs, such as carbon taxes and stricter emissions caps, by addressing emissions exposure.
• ESG Reporting Compliance: Supporting environmental reporting and greater transparency around emissions management.
• Access to Green Financing: Supporting sustainability-linked financing structures where measurable environmental performance forms part of the financing criteria.
• Operational Efficiency: Encouraging investment in fuel-efficient technologies, Sustainable Aviation Fuels (SAFs) and more efficient operational planning.

For business aviation, this translates to a harmonized approach where environmental accountability is embedded into fiscal decision-making, ensuring long-term resilience in a carbon-constrained economy.

Who Oversees Carbon Offsetting in Aviation?

ICAO established the Carbon Offsetting and Reduction Scheme for International Aviation (CORSIA) for international aviation CO₂ emissions. Aeroplane operators work through their administering State for the applicable monitoring, reporting, verification and offsetting requirements.

CORSIA Implementation at a Glance

CORSIA element	Current framework
Pilot Phase	2021–2023
First Phase	2024–2026
Second Phase	2027–2035
2021–2023 baseline	2019 CORSIA-covered emissions
2024–2035 baseline	85% of 2019 CORSIA-covered emissions
Offsetting coverage	Determined through State participation and CORSIA’s route-based approach
MRV	MRV requirements apply separately from CORSIA offsetting participation to aeroplane operators within the applicable scope, subject to the relevant thresholds and exemptions.

CORSIA implementation also includes annual State-pair coverage, CORSIA Eligible Fuels, CORSIA Eligible Emissions Units and the CORSIA Central Registry.

CORSIA and Carbon Offsetting Options for Business Aviation Operators

Selecting an appropriate offsetting mechanism depends on whether the objective is regulatory compliance, voluntary climate action, corporate sustainability or a combination of these.

1. Carbon Offsetting

Business flight operators can address residual CO2 emissions through carbon credits generated by recognized carbon-crediting programs. For voluntary use, operators need to assess the environmental integrity, verification methodology, additionality and permanence of the selected credits. For CORSIA compliance, only emissions units meeting ICAO’s CORSIA eligibility requirements for the relevant compliance period can be used.

Sustainable Finance Alignment:

• Converts emissions exposure into measurable environmental action that can support ESG reporting.
• Environmental and social co-benefits can support broader sustainability objectives.
• Sustainable Aviation Solutions: Supports a wider sustainability strategy by complementing measures such as Sustainable Aviation Fuels, operational efficiency and other emissions-reduction initiatives.

2. CORSIA Compliance

Aeroplane operators within the applicable MRV scope monitor, verify and report their international aviation CO₂ emissions through their administering State.

The MRV scope covers operators producing more than 10,000 tonnes of CO₂ annually from applicable international flights using aeroplanes above 5,700 kg maximum certificated take-off mass. Defined exemptions include humanitarian, medical and firefighting operations. Offsetting is determined separately. A route generates CORSIA offsetting requirements when the applicable departure and destination States are included in CORSIA State-pair coverage for that year.

Operators with an offsetting requirement use CORSIA Eligible Emissions Units accepted for the relevant compliance period. Eligibility needs to be checked against the current ICAO scope before units are acquired for compliance.

3. Voluntary Offsetting Programs

Voluntary programs allow operators to source carbon credits independently from mandatory CORSIA obligations. These programs can support corporate sustainability commitments and provide clients with additional options for addressing the emissions associated with their travel.

• Enhances environmental reporting and sustainability engagement.
• Can be integrated into passenger or client sustainability programs.

4. Offset Projects and Standards

High-integrity carbon projects need credible methodologies for demonstrating additionality, emissions reductions or removals, monitoring and verification.

• Supports measurable environmental outcomes.
• Helps operators distinguish credible carbon credits from lower-quality offset products.

5. Fly Net Zero

Fly Net Zero is IATA’s industry commitment to achieve net-zero carbon emissions by 2050. The pathway relies primarily on measures such as Sustainable Aviation Fuels, new aircraft and propulsion technologies, operational and infrastructure improvements, and other emissions-reduction measures.

Carbon offsetting and carbon-removal mechanisms form part of the wider transition, but they do not replace direct operational and technological emissions reductions.

6. Carbon Markets and Exchanges

Carbon-market platforms can support the purchase and retirement of emissions units. For regulatory CORSIA use, the operator needs to confirm that the emissions-unit program and specific units satisfy ICAO eligibility requirements for the relevant compliance period.

• Centralized procurement can simplify emissions-unit acquisition and recordkeeping.
• Operators need clear records showing purchase, ownership and retirement of units used for compliance.

Advantages of Carbon Offsetting in Aviation

Carbon offsetting can support an operator’s wider sustainability strategy when it is used alongside direct emissions-reduction measures. Its value extends beyond purchasing carbon credits and can include environmental, commercial and operational benefits.

1. Supporting Residual Emissions Management

Carbon offsetting provides a way to address emissions that remain after direct reduction measures have been applied. Verified emissions-reduction or removal projects can complement measures such as fuel efficiency, operational improvements, fleet modernization and the use of Sustainable Aviation Fuels.

2. Strengthening Sustainability Positioning

Business aviation operators that demonstrate a structured approach to emissions management can strengthen their sustainability positioning with clients, investors and other stakeholders. Clear reporting and credible offsetting practices can also support broader ESG and corporate sustainability objectives.

3. Supporting Credible Environmental Projects

High-quality carbon credits can support projects such as renewable energy, methane reduction, forestry and other verified emissions-reduction or removal activities. These projects can also contribute to environmental and economic activity in the regions where they are implemented.

4. Encouraging Better Operational and Emissions Management

The need to measure and report aviation emissions encourages more accurate flight data, stronger emissions tracking and greater attention to operational efficiency. This can support better fuel planning, route optimization and the use of lower-emission technologies and ground support equipment where available.

5. Offering Voluntary Options to Clients

Operators can offer voluntary carbon-offsetting options to charter customers or passengers who want to address emissions associated with their travel. These voluntary programs remain separate from the operator’s regulatory CORSIA obligations and can form part of a wider client sustainability program.

6. Supporting Corporate Sustainability and Risk Management

A structured emissions-reduction and offsetting strategy can support corporate sustainability commitments while helping operators manage reputational and financial exposure linked to aviation emissions.

Carbon offsetting works best as a complement to direct emissions reduction, not as a substitute for operational efficiency, lower-carbon fuels or new aircraft technology.

Future of CORSIA Participation and Coverage

CORSIA participation has expanded over time. From 2027, the scheme enters its Second Phase, with participation determined according to ICAO’s applicable criteria and voluntary participation arrangements. Operators should check current ICAO State-pair coverage for the relevant year when determining whether offsetting requirements apply.

As CORSIA progresses through the Second Phase to 2035, operators need to work from current ICAO information and the procedures of their administering State rather than relying on fixed participation figures from previous years.

What Business Aviation Operators Need to Monitor

CORSIA requirements need to be reviewed against current ICAO information and the procedures of the operator’s administering State. Operators need to keep track of State-pair coverage, emissions reporting and verification requirements, applicable thresholds and exemptions, and the CORSIA Eligible Emissions Units accepted for the relevant compliance period.

Before meeting an offsetting requirement, operators need to confirm the amount applicable to the compliance period and ensure that the selected emissions units remain eligible under the current ICAO framework. Maintaining accurate emissions records and reviewing changes in route coverage and reporting requirements throughout the year supports a smoother compliance process.

Just Aviation and CORSIA Operational Support

Just Aviation supports business and charter operators in coordinating international operations with current CORSIA and environmental requirements in mind. Our team can assist operators with the operational information and coordination needed around their flights, routes and reporting process, including route review, flight records, operational data and communication with the relevant parties involved in the compliance process.

We can also support operators in keeping track of changing CORSIA requirements affecting their international operations and coordinate the wider flight-support requirements connected to those movements. CORSIA monitoring, reporting, verification and final offsetting obligations remain with the applicable aeroplane operator and administering State.

For CORSIA-related operational coordination and international flight support, contact the Just Aviation Operations Control Center at [email protected]

Frequently Asked Questions

1. Does CORSIA apply to my business aviation operation?

CORSIA applicability depends on the operator’s international emissions, aircraft used, applicable exemptions, administering State and the routes being operated. MRV requirements and offsetting obligations are assessed separately.

2. What is the CORSIA baseline for 2024–2035?

For the First and Second phases, covering 2024–2035, the baseline is 85% of 2019 CORSIA-covered emissions.

3. Which operators fall within CORSIA MRV requirements?

The MRV scope covers aeroplane operators producing more than 10,000 tonnes of CO₂ annually from applicable international flights using aeroplanes above 5,700 kg maximum certificated take-off mass, subject to defined exemptions.

4. How are CORSIA offsetting obligations determined?

Offsetting is route-based. A route generates an offsetting requirement when the applicable departure and destination States are included in CORSIA State-pair coverage for the relevant year.

5. Which carbon credits can be used for CORSIA compliance?

Operators need to use CORSIA Eligible Emissions Units accepted by ICAO for the relevant compliance period. Eligibility needs to be confirmed before units are acquired for compliance.

Disclaimer

CORSIA requirements and implementation elements can change. Operators need to confirm current requirements through ICAO and their administering State. Just Aviation provides flight-support coordination and does not determine regulatory applicability, certify emissions data or approve CORSIA compliance submissions.

Conclusion

Effective CORSIA compliance starts with identifying the operator’s applicable MRV and offsetting requirements, maintaining accurate emissions records and confirming route coverage and eligible emissions units through current ICAO and administering-State information.

For business aviation operators, a structured compliance process keeps emissions reporting and offsetting aligned with the aircraft, routes and international operations being conducted.