Why This Comparison Matters
If you work in food manufacturing, food service, or supply chain management, you have almost certainly encountered both HACCP and ISO 22000. The two are often mentioned in the same breath, and for good reason. They share a common purpose: preventing food safety hazards from reaching consumers. But they are not the same thing, and confusing them can lead to real problems when you are trying to decide what your organisation actually needs.
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This article breaks down what each framework is, how they relate to each other, where they differ, and which one is appropriate for your situation. If you are a quality manager, food safety officer, or auditor working in the food sector, this is the comparison you need to understand before making certification decisions or conducting food safety audits.
What Is HACCP?
HACCP stands for Hazard Analysis and Critical Control Points. It is a systematic, science-based approach to identifying, evaluating, and controlling food safety hazards. The hazards it addresses fall into three categories: biological (such as pathogens), chemical (such as pesticide residues or allergens), and physical (such as metal fragments or glass).
HACCP originated in the 1960s through a collaboration between NASA and the Pillsbury Company, developed to ensure food safety for astronauts. It was later adopted by the Codex Alimentarius Commission, a joint body of the World Health Organisation and the Food and Agriculture Organisation of the United Nations, and has since become the internationally recognised standard for food safety hazard control.
The Seven Principles of HACCP
HACCP is built on seven principles that form the foundation of any HACCP plan:
- Conduct a hazard analysis. Identify all potential biological, chemical, and physical hazards at each step of the food production process.
- Identify Critical Control Points (CCPs). Determine which steps in the process are essential for controlling identified hazards.
- Establish critical limits. Set the maximum and minimum values to which a biological, chemical, or physical parameter must be controlled at a CCP.
- Establish monitoring procedures. Define how CCPs will be monitored and by whom.
- Establish corrective actions. Determine what will happen when monitoring indicates a CCP is not under control.
- Establish verification procedures. Confirm that the HACCP system is working effectively.
- Establish record-keeping and documentation procedures. Maintain records to demonstrate the system is operating as intended.
HACCP is a technical food safety tool. It is not a management system standard. It does not address leadership commitment, supplier management, communication frameworks, or continual improvement in a structured way. It is focused squarely on hazard control at the operational level.
Is HACCP Mandatory in Australia?
In Australia, food businesses operating under the Australia New Zealand Food Standards Code are required to implement food safety programs based on HACCP principles. The specific requirements vary depending on the type of food business and which state or territory food safety legislation applies. For many food manufacturers, a documented HACCP plan is a legal baseline, not an optional extra.
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What Is ISO 22000?
ISO 22000 is an international standard for Food Safety Management Systems (FSMS). It was first published in 2005 and significantly revised in 2018. The current version, ISO 22000:2018, integrates HACCP principles with the High Level Structure (HLS) used across modern ISO management system standards such as ISO 9001, ISO 14001, and ISO 45001.
The result is a comprehensive food safety management system that goes well beyond hazard control. ISO 22000 addresses the full organisational context, leadership and commitment, risk-based thinking, planning, support, operational controls, performance evaluation, and continual improvement. It is designed to be applicable to any organisation in the food chain, from primary producers and manufacturers through to retailers, caterers, and packaging suppliers.
You can read a detailed overview of what ISO 22000 covers in our article What Is ISO 22000? Food Safety Management Systems Explained.
The Two Key Operational Tools in ISO 22000
ISO 22000 uses two operational mechanisms that work together to control food safety hazards:
- Prerequisite Programmes (PRPs). These are the basic conditions and activities necessary to maintain a hygienic environment throughout the food chain. They include things like cleaning and sanitation, pest control, personal hygiene, maintenance of equipment, and supplier controls. PRPs manage general hygiene risks but are not specific to identified hazards in the way CCPs are.
- Hazard Analysis and Critical Control Points (HACCP). ISO 22000 incorporates HACCP as its core hazard control methodology. The standard requires a full hazard analysis, the determination of control measures, and the establishment of a HACCP plan with CCPs and operational PRPs (oPRPs).
The distinction between a CCP and an oPRP is one of the more nuanced aspects of ISO 22000. A CCP is a step where a specific critical limit can be set and monitored to control a hazard. An oPRP controls a hazard or reduces it to an acceptable level but does not have a critical limit in the same sense. Both are required under ISO 22000, and auditors will look closely at how an organisation has made these determinations.
HACCP vs ISO 22000: The Core Differences
Now that both frameworks are defined, here is where the real comparison begins. These are not competing alternatives. ISO 22000 contains HACCP. The question is whether HACCP alone is sufficient for your situation, or whether the broader management system framework of ISO 22000 is what you need.
Scope and Coverage
HACCP is a food safety tool focused on hazard identification and control at the process level. It tells you what hazards exist, where they need to be controlled, and how to monitor those control points. It does not tell you how to structure your organisation, how to manage your suppliers, how to communicate food safety requirements internally, or how to evaluate whether your system is actually improving over time.
ISO 22000 covers all of that. It uses the same High Level Structure as other ISO management system standards, which means it addresses context of the organisation, leadership, planning, support, operation, performance evaluation, and improvement. HACCP sits within the operation section of ISO 22000, embedded as the technical core of a much larger system.
Management System Requirements
HACCP has no management system requirements. There is no requirement for top management to demonstrate commitment, no formal internal audit process, no management review, and no structured approach to setting food safety objectives. HACCP is a plan, not a system.
ISO 22000 requires all of these elements. Top management must demonstrate leadership and commitment to the FSMS. The organisation must conduct internal audits, hold management reviews, set measurable food safety objectives, and implement corrective actions when nonconformities occur. These requirements make ISO 22000 a genuine management system, not just a technical control plan.
Risk-Based Thinking
HACCP addresses risk in a specific, technical way through hazard analysis. It identifies hazards and assesses their severity and likelihood to determine whether a control measure is needed and at what level.
ISO 22000 takes a broader view of risk. In addition to the HACCP hazard analysis, it requires the organisation to consider risks and opportunities at the organisational level, including external and internal issues that could affect the food safety management system. This aligns with the risk-based thinking approach used across all modern ISO standards.
Third-Party Certification
HACCP can be third-party verified, and many food businesses undergo HACCP audits as part of regulatory compliance or customer requirements. However, there is no single global certification scheme for HACCP in the way that ISO certification works.
ISO 22000 certification is issued by accredited certification bodies against the published standard. It is internationally recognised and increasingly required by major food retailers and supply chain customers. If your customers are asking for food safety management system certification, they are almost certainly asking for ISO 22000 or one of the schemes built on top of it, such as FSSC 22000.
If you are comparing ISO 22000 with FSSC 22000, our article FSSC 22000 vs ISO 22000: Which Food Safety Certification Do You Need? covers that distinction in detail.
Documentation Requirements
HACCP requires documented hazard analysis, a HACCP plan, monitoring records, corrective action records, and verification records. The documentation is focused on the HACCP plan itself.
ISO 22000 requires all of that plus documented information to support the broader management system. This includes a food safety policy, food safety objectives, competence records, internal audit records, management review outputs, and documented procedures for key processes. The documentation burden under ISO 22000 is higher, but the result is a more auditable and defensible system.
Which One Does Your Organisation Actually Need?
This is the practical question most quality managers and food safety professionals are trying to answer. Here is a straightforward way to think about it.
HACCP Is the Right Starting Point If:
- You are a smaller food business working primarily to meet regulatory requirements under the Australia New Zealand Food Standards Code.
- Your customers are not yet asking for ISO 22000 certification.
- You are building your food safety foundations and want to establish hazard control before layering in a full management system.
- You operate in a single site with relatively simple processes.
ISO 22000 Is the Right Choice If:
- Your customers, particularly major retailers or export markets, require certified food safety management system compliance.
- You want to demonstrate food safety management capability to a global standard.
- You already have a QMS under ISO 9001 and want to integrate food safety management into a consistent framework.
- You are supplying into food chains where FSSC 22000 or equivalent certification is expected.
- You want a structured approach to continual improvement, not just hazard control.
It is worth noting that implementing ISO 22000 does not mean abandoning HACCP. It means embedding HACCP within a larger, more robust management system. Organisations that already have a mature HACCP plan in place are well positioned to transition to ISO 22000 because the technical core is already there.
What Auditors Look for When Auditing Against Each Framework
If you are an auditor working in the food sector, or a quality manager preparing for an audit, understanding what each framework requires at the audit level is critical.
Auditing a HACCP Plan
When auditing against HACCP, you are looking for evidence that the seven principles have been applied correctly. This means reviewing the hazard analysis to confirm all relevant hazards have been identified and assessed, checking that CCPs are correctly identified and that critical limits are scientifically justified, verifying that monitoring is occurring at the required frequency, and confirming that corrective action records exist for any deviations. You are also checking that the HACCP plan has been validated and is being verified on an ongoing basis.
A common finding in HACCP audits is that the plan was developed years ago and has never been reviewed following changes to the process, raw materials, or equipment. Another frequent issue is that monitoring records exist on paper but the actual practice on the floor does not match what is documented.
Auditing ISO 22000
Auditing ISO 22000 covers all of the HACCP elements above, but also extends into the management system. You will be looking at whether top management can articulate their commitment to food safety, whether food safety objectives are measurable and being tracked, whether internal audits are being conducted and findings are being actioned, and whether management reviews are genuinely evaluating system performance.
The hazard analysis process is scrutinised closely, including how the organisation has distinguished between CCPs and oPRPs, and whether the rationale for those decisions is documented and defensible. PRPs are also examined to confirm they are appropriate, implemented, and being monitored.
Our article on PRPs and CCPs Explained: The Building Blocks of Food Safety Control goes into detail on how these two elements work together and what auditors expect to see.
Integrating HACCP and ISO 22000 in Practice
For most food manufacturers, the practical path is to treat HACCP as the technical foundation and ISO 22000 as the management system that wraps around it. This means your existing HACCP plan becomes the operational core of your FSMS, while the ISO 22000 requirements add the governance, planning, and improvement structures that make the system sustainable.
When organisations try to implement ISO 22000 without a solid HACCP foundation, they often end up with a management system that looks good on paper but cannot actually control the hazards that matter. When organisations have a strong HACCP plan but no management system around it, they tend to struggle with consistency, supplier control, and demonstrating ongoing effectiveness to customers and auditors.
The combination of both is what makes a food safety management system genuinely robust. ISO 22000 is designed to make that combination work, and it does so in a way that aligns with the management system frameworks that quality, environmental, and safety professionals are already familiar with.
If you are considering adding ISO 22000 to your professional skill set as an auditor, our article on Adding ISO 22000 to Your Auditor Skill Set: Why Food Safety Is a Smart Move outlines why it is one of the most practical expansions an auditor can make.
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HACCP is a technical food safety tool based on seven principles. It identifies hazards and controls them at critical points in the production process. It is a regulatory requirement for most food businesses in Australia and forms the operational core of any food safety management system.
ISO 22000 is a full management system standard that incorporates HACCP as its technical foundation. It adds leadership requirements, risk-based thinking at the organisational level, internal audit, management review, and continual improvement. It is the framework used for third-party certification and is increasingly required by food chain customers globally.
Understanding the difference between the two is not just academic. It shapes how you design your food safety system, what certification you pursue, how you prepare for audits, and how you demonstrate food safety capability to customers and regulators.
Building Your Food Safety Auditing Skills
If you are a quality manager, auditor, or food safety professional looking to formalise your understanding of ISO 22000 and how to audit against it, Audit Workshop offers practical, trainer-led courses that go well beyond theory. Our courses are built around real audit scenarios, delivered by a certified lead auditor with extensive experience across certification audits in Australia and internationally. Whether you are working toward internal auditor credentials or building toward lead auditor certification, the food safety auditing skills you develop will be directly applicable on the floor, not just in the classroom.
