TL:DR

Every entity that prepares its financial statements under full IFRS Accounting Standards must comply with IFRS 18 for annual periods starting on or after 1 January 2027. That covers listed companies, banks, insurers, and private groups reporting under full IFRS across more than 140 countries. Companies on the separate IFRS for SMEs standard are not affected.

Does My Company Have to Apply IFRS 18?

If your audited accounts already say “prepared in accordance with IFRS Accounting Standards,” then yes. IFRS 18 replaces IAS 1, and IAS 1 was the presentation rulebook you were already following. There is no opt-out, no size threshold, and no industry carve-out. The IASB confirmed the mandatory date as 1 January 2027, and it applies retrospectively, so your 2026 numbers become the comparative you restate.

The scope surprises people because the standard number sounds narrow. It isn’t. EY puts it plainly: the new rules are expected to affect the presentation and disclosure of most, if not all, entities reporting under IFRS.

Want the full breakdown of what actually changes on the face of the statement? Start with our pillar guide on IFRS 18 financial statements. This page answers a narrower question: are you even in scope, and if so, which flavour of the rules applies to you.

Is IFRS 18 Mandatory for Private Companies?

For private companies reporting under full IFRS, yes. A company being unlisted changes nothing about scope. A family-owned manufacturer in Jeddah preparing full-IFRS accounts for its lenders faces the same five-category income statement as a listed bank in Dubai.

The one real dividing line is which standard you report under. Full IFRS reporters are in. Reporters on the IFRS for SMEs Accounting Standard are on a separate framework that the IASB maintains independently, and IFRS 18 does not amend it. So the honest test isn’t “are we big” or “are we listed.” It’s “do our statements cite full IFRS.”

Does IFRS 18 Apply to Startups and Early-Stage Companies?

Only if they report under full IFRS. Most early-stage companies in the GCC keep their books on a simpler basis until a lender, an investor, or a listing forces the jump to full IFRS. The moment that jump happens from 2027 onward, IFRS 18 is the presentation standard they land on. There is no grace period for young companies.

Here’s the counterintuitive part. A startup adopting full IFRS for the first time in 2027 has it easier than an established company, not harder. It has no legacy “adjusted EBITDA” definitions baked into a decade of investor decks to reconcile. It builds its chart of accounts around the five categories from day one. The pain in IFRS 18 lands hardest on companies with history to unwind.

IFRS 18 vs IAS 1: Which One Applies Now?

For your 2026 accounts, IAS 1 still applies as the primary basis. For 2027, IFRS 18 takes over completely. IAS 1 is withdrawn. But because the standard is retrospective, your 2026 figures have to be re-presented in the IFRS 18 structure to sit as comparatives beside your 2027 results. So both standards touch your 2026 year: IAS 1 for what you file, IFRS 18 for the shadow version you build alongside it.

That overlap is why “which applies now” is the wrong question. Both do, at once. And that dual-track period is exactly where most teams underestimate the work.

Want the full breakdown of what IFRS 18 changes on the face of the statement? Start with our pillar guide.

What About US GAAP Reporters?

IFRS 18 does not apply to companies reporting solely under US GAAP. The FASB runs its own presentation rules. But a GCC subsidiary of a US parent often prepares full-IFRS statutory accounts locally while feeding US GAAP numbers up to the group. If that describes you, the local statutory pack is in scope even though the group consolidation isn’t. Dual reporters get both.

The Fastest Way to Confirm Your Status

Open your most recent audited financial statements and read the basis-of-preparation note. If it references IFRS Accounting Standards as issued by the IASB, or SOCPA-endorsed IFRS in Saudi Arabia, you are in scope for 2027. If it references the IFRS for SMEs Standard, you are not. That single note settles the question in about thirty seconds.

If your group runs a mix, some entities on full IFRS, others on SME or local GAAP, then your scope is split, and the consolidation is where it gets fiddly. That’s the situation worth a proper conversation. See how our IFRS 18 implementation services handle mixed-framework groups. Once you confirm you’re in scope, the next job is planning the move, covered in our guide to IFRS 18 transition challenges.

Frequently Asked Questions