HACCP vs ISO 22000 vs FSSC 22000: which one, and when, starting from your HACCP plan

HACCP vs ISO 22000: the short answer

HACCP answers the question "is this food safe at every step?" ISO 22000 examines whether the business is organised to stay safe whoever is on shift. If your inspector or a local customer only wants proof that hazards are identified and controlled, HACCP is enough. If a customer, a parent company or a tender asks for a certified food safety management system, you need ISO 22000. If a retailer requires certification recognised by the Global Food Safety Initiative (GFSI), ISO 22000 alone will not do, and FSSC 22000, built on ISO 22000, is the natural step.

The method inside all three is the Codex General Principles of Food Hygiene, CXC 1-1969. What changes from level to level is how much sits around it, who checks it and what the certificate is worth to the people who read it.

Is HACCP a legal duty or a certificate?

Several food laws require a system based on the HACCP principles and say nothing about certification:

• European Union: Regulation (EC) No 852/2004, Article 5, requires food business operators after primary production to put in place and maintain permanent procedures based on the HACCP principles.
• United States: meat and poultry establishments inspected by USDA FSIS work under 9 CFR Part 417, seafood processors under 21 CFR Part 123, and most other FDA-registered food facilities need a written food safety plan with hazard analysis and risk-based preventive controls under FSMA (21 CFR Part 117).
• Philippines: the Food Safety Act of 2013 (Republic Act No. 10611) encourages food business operators to implement a HACCP-based system and directs official inspection to take HACCP implementation into account.

An inspector checks that the system works; passing earns no certificate. Certification is a voluntary step taken because someone downstream wants independent evidence, and here the options part ways: a HACCP certificate is issued against whatever HACCP document the certification body names, while ISO 22000 and FSSC 22000 follow the same accreditation and scheme rules everywhere.

What each one covers, who audits and what you receive

Sterling does not certify at any of the three levels. The certification body audits and makes the decision, and for accredited certificates its accreditation body is recognised through the Global ACI arrangement, which replaced the IAF MLA and ILAC MRA on 1 January 2026.

What ISO 22000 adds to a working HACCP plan

A plant with a sound HACCP plan already holds the hardest part of ISO 22000. Annex A of ISO 22000:2018 maps the Codex steps to its clauses, and your CCPs move into clause 8.5.4, the hazard control plan (HACCP/OPRP plan). Three things are new.

A second kind of control

ISO 22000 lets the hazard analysis place a significant hazard under an operational prerequisite programme (OPRP), monitored against action criteria, where a measurable critical limit would be artificial. Plans with a CCP at every step usually shrink here.

The management system around the plan

Clauses 4 to 7, 9 and 10 bring scope, policy and measurable objectives, a food safety team leader with authority, competence, communication along the food chain, document control, internal audit, management review and corrective action.

Traceability, emergencies and recall as tested routines

Clause 8 expects working traceability, prepared emergency responses and a recall procedure tested in practice, usually by a timed mock recall. A third edition of ISO 22000 is in preparation with no publication date announced, so systems built today use the 2018 edition with Amendment 1:2024.

What FSSC 22000 adds on top of ISO 22000

FSSC 22000 is a certification scheme owned by Foundation FSSC, with three normative parts: ISO 22000, the prerequisite programme standards for the sector, and the scheme's own additional requirements. Under Version 7 the prerequisite programmes come from ISO 22002-100:2025, read with the sector part, such as ISO 22002-1:2025 for food manufacturing. Farming sits outside the scheme.

The additional requirements cover eighteen topics, among them food defence, food fraud mitigation, allergen management, environmental monitoring, food safety and quality culture and food loss and waste. Each needs an owner and records, and the unannounced audit tests them on an ordinary day.

Timing matters if you are planning now. Audits against Version 6 may be delivered until 30 April 2027, upgrade audits to Version 7 run from 1 May 2027 to 30 April 2028, and remaining Version 6 certificates are withdrawn after 30 June 2028. A business starting from HACCP today should build straight to Version 7.

Which one, and when: matching the requirement to the route

Read the written requirement, not the word used on the phone: "HACCP" from a purchasing contact can mean a certificate, a system checked in their own supplier audit, or any recognised food safety certificate.

The stages are covered in HACCP certification process, step by step, and the effort drivers in HACCP certification cost: what moves the price.

When to hold two, and in what order to climb

A separate HACCP certificate beside ISO 22000 or FSSC 22000 is rarely needed, because both audit the hazard control in full; the exceptions are a contract or an export authority that names a HACCP certificate specifically. Ask first whether the higher certificate is accepted instead.

The order of work is fixed even when FSSC 22000 is the target from day one: hygiene practices, then a HACCP study validated on real production, then the management layer, then the sector programmes and scheme requirements. If the next level is a year away, build prerequisite programmes to the relevant ISO 22002 part now; it shortens the later move.

HACCP vs ISO 22000 vs FSSC 22000: questions buyers ask