ADGM Approved Auditors List: How to Verify One (2026)

An ADGM Registered Auditor is a firm registered with the ADGM Registration Authority and eligible to conduct statutory audits of ADGM entities.

No other approval substitutes for it. A firm licensed by the Ministry of Economy, registered as an FTA tax agent, or approved in another free zone is not eligible. It has to appear on the RA’s register. I have seen an entity engage a reputable firm, sit through a full audit, receive a signed report, and then have the submission rejected because the firm was not registered, and the whole audit had to be redone.

The register is also not the same thing it was five years ago:

• Before December 2021: Recognised Auditors. The RA operated an earlier recognition regime under a different name.
• From 1 December 2021: Registered Auditors. The enhanced ADGM Auditors’ Framework replaced it, and existing Recognised Auditors had to re-register within twelve months or by their renewal date, whichever came first.
• 2023 and 2025: the rules were rewritten again. The Companies Regulations (Auditors) Rules 2023 replaced the 2022 version, and the Rules 2025 replaced those in turn.

That is why a PDF list saved last year is worse than no list at all. Firms join and leave the register, permits change, and the eligibility rules themselves have moved three times since 2021.

The same audited financial statements filed to the ADGM portal are the statements your Corporate Tax return is built on. If the income classification is not clearly segregated between qualifying and non-qualifying, or the related-party disclosures are incomplete, both filings carry that problem at once.

In practice, many ADGM entities treat their RA accounts and their CT return as two parallel exercises. One person prepares the accounts, another prepares the return, and nobody checks the two are entirely consistent. The income segregation is where this creates real risk.

For a QFZP, the accounts must clearly show qualifying income, taxed at 0%, separated from non-qualifying income. That split needs to be visible in the audited financial statements themselves, not just in the CT workings behind them. Show revenue as a single undifferentiated line, then try to split it in the CT return, and the FTA’s cross-referencing flags the inconsistency immediately.

The ADGM RA filing deadline is nine months from the Accounting Reference Date for a private company, 30 September for a December year-end. The FTA’s Corporate Tax deadline is also nine months from the tax period end, also 30 September. They coincide, which is worth planning around alongside your other Corporate Tax filing deadlines.

That means the audit has to be finished, the accounts filed with the RA, and the CT return filed with the FTA, all by the same date. Engage your auditor in June or July for a December year-end and you are immediately under pressure, with any fieldwork complexity risking both deadlines at once rather than one.

An ADGM QFZP needs to treat the audit, the RA filing, and the CT return as one exercise on one timeline, not three tasks that happen to fall in the same window. Structure the accounts correctly at preparation. You cannot adjust your way there afterwards.

I will be upfront that this is more observation than data, since I am based in Abu Dhabi and my ADGM practice runs deeper than my DIFC or DMCC exposure. But the pattern is consistent enough to name.

DMCC has a large, diverse population, everything from commodities traders to holding companies set up mainly for structural convenience. Some entities are exceptionally well-run. Others treated the annual audit as a licence-renewal formality rather than a genuine financial exercise, and the quality beneath the signed report varied accordingly.

Why ADGM Tends to Run Differently

ADGM entities tend to approach compliance differently, for two reasons. The zone was built for financial services and institutional activity. Its framework attracts entities that are already regulated or sit inside regulated structures, and that selects for governance seriousness before the first annual return is even filed.

ADGM also operates under English common law directly, and its Companies Regulations 2020 are modelled on UK company law. Directors carry statutory duties that are familiar from UK corporate governance. The directors I work with in ADGM entities tend to engage more with what their financial statements actually say.

DIFC sits differently again. Established in 2004, it has a decade’s head start on ADGM. Its compliance culture is if anything more rigorously enforced, partly because the DFSA has a longer enforcement record, partly because its concentration of financial institutions raises the baseline for everyone in the zone.

The honest qualification: this is a tendency, not a rule. I have worked with DMCC entities that are exceptionally well-run and ADGM entities that have been careless. Zone registration is a structural choice, not a guarantee of governance quality. But describing the general population rather than the exceptions, ADGM entities on average arrive at their CT compliance conversation with more foundational work already in place.

ADGM’s auditor framework has two layers, and the distinction is not always understood by businesses appointing an auditor for the first time.

The Base Level

An ADGM RA Registered Auditor is a firm registered with the Registration Authority under the Companies Regulations (Auditors) Rules 2025. It needs at least one Registered Audit Principal holding a recognised professional qualification. That covers most non-financial ADGM entities, SPVs, holding companies and standard QFZPs, and nothing more is needed.

Where the Confusion Starts

The additional layer is where confusion sets in. Auditing a public interest entity requires a Public Audit Permit, and auditing a financial institution licensed by the FSRA requires an FI Audit Permit. These are separate applications with their own fees. The RA grants them to the firm and to each principal the firm nominates, and an FI Audit Permit is only granted where a Public Audit Permit is already held or applied for at the same time.

One thing does sit on the FSRA side, and it sits on you rather than on your auditor. If your entity holds an FSRA licence, you have to notify the regulator of the auditor’s appointment in the form it prescribes. You also have to take reasonable steps, before you appoint, to satisfy yourself that the auditor has the skills, resources and experience to audit your business. The permit is the RA’s to grant, but that check is yours to make.

The pattern I see runs like this. A business with FSRA permissions, an asset manager, an investment firm, a payment service provider, appoints an auditor it has used elsewhere. The firm is competent, possibly even ADGM RA Registered, and the audit proceeds.

Sometimes the filing is rejected outright because the firm does not hold the FI Permit. More often it goes through. The gap surfaces later, when a supervisory review finds an auditor behind the accounts who was never permitted to audit that class of entity.

There is no obvious external signal that the wrong auditor was appointed. The report looks the same. The accounts look the same. The problem sits invisible until a supervision cycle, an auditor change, or a counterparty’s due diligence surfaces it.

How to Verify Before You Engage

Check the RA’s public register before you sign the engagement letter, not after the fieldwork is done. The register lists firms and the individual Registered Audit Principals authorised to sign, together with the Additional Permits each one holds.

1. Classify your own entity first. Establish whether you are a standard entity, a public interest entity, or an FSRA-licensed financial institution. The permit you need follows from this, not from the auditor’s reputation.
2. Find the firm on the RA register. If the firm is not listed, it cannot sign your accounts, whatever else it holds.
3. Check the named principal, not only the firm. Registration sits at both levels, and the principal signing your report must be registered in their own right.
4. Match the permits to your classification. Base registration alone will not cover a public interest entity or a financial institution.

What Happens If You Get This Wrong

The consequences sit with two different authorities, and relief from one does not offset the other. In my experience the second and fourth points below catch people out far more often than the first.

• The audit gets done twice. If the firm was not eligible, the accounts do not meet the requirement, so you pay for a second external audit on a compressed timeline.
• Late filing carries a fine. The Registrar has no discretion to waive it. An extension of up to three months can be requested before the deadline, but never beyond twelve months from the end of the accounting period.
• QFZP status is exposed. Audited financial statements are a condition of the 0% rate, not a formality attached to it.
• A regulatory breach can surface late. For a licensed entity, appointing an auditor without the required permit is a compliance failure that may not appear until a supervisory review.

My bookkeeping and accounts preparation gets your records ready before your registered auditor’s fieldwork begins. Reconciliations, the fixed asset register and EOSB provisions are done in advance, so the audit itself moves faster.

My free zone Corporate Tax advisory builds the qualifying income classification into the accounts from the start. The statements your auditor signs then already support the return I file for you, EmaraTax submission included.

Tell me whether your ADGM entity is a standard company, a public interest entity, or holds an FSRA permission. I will tell you which permits your auditor needs before you sign anything. Book a consultation.