What Is ISA 700? How Auditors Form and Express Opinions Explained

The audit opinion is a binary-with-shades conclusion built on the entire body of audit evidence. ISA 700 requires the auditor first to evaluate: are the statements prepared in accordance with IFRS (the applicable framework in the UAE)? That evaluation covers accounting policies, estimates, presentation, and — critically — whether the statements as a whole are free from material misstatement and achieve fair presentation. Only then is the opinion formed.

Unmodified opinion: the financial statements give a true and fair view (or are presented fairly, in all material respects) in accordance with IFRS. Modified opinions come in three forms under ISA 705: qualified (material but not pervasive misstatement, or insufficient evidence that is not pervasive), adverse (material and pervasive misstatement — the statements do not give a true and fair view), and disclaimer (insufficient evidence that is material and pervasive — the auditor cannot form an opinion).

ISA 700 also mandates the report's anatomy: title, addressee, opinion section, basis for opinion (affirming ISA compliance and independence), and — for listed entities — Key Audit Matters (ISA 701). Going-concern conclusions (ISA 570), emphasis-of-matter and other-matter paragraphs (ISA 706) sit within this structure. The report is dated no earlier than when sufficient appropriate evidence is obtained — including the ISA 560 subsequent-events work.

Opinion formation is the final step of a disciplined evaluation. The auditor: (1) concludes whether sufficient appropriate evidence was obtained — if not, the opinion must reflect that; (2) evaluates uncorrected misstatements against materiality (individually and in aggregate — the classic 'each immaterial, together material' trap); (3) assesses qualitative materiality (a small fraud by management can be material by nature); (4) evaluates presentation, structure, and content, including whether disclosures are adequate; and (5) considers going concern.

The modified-opinion decision tree (ISA 705): Is there a misstatement or a scope limitation? Is it material? Is it pervasive (affecting many elements, or fundamental to users' understanding)? Misstatement + material + not pervasive = qualified ('except for'); misstatement + material + pervasive = adverse. Scope limitation + material + not pervasive = qualified; scope limitation + material + pervasive = disclaimer.

Report mechanics matter: the Basis for Opinion section must describe why the opinion is what it is (for modifications, a clear description of the matter); the auditor must state compliance with ISAs and relevant ethical requirements including independence; and the report must identify the applicable framework. In group audits, ISA 600 considerations feed the opinion. The engagement partner's name appears on listed-entity reports — personal accountability, in print.

In the UAE, the ISA 700 report is a regulatory document, not just a shareholder one. Free zone authorities (DMCC, JAFZA, DIFC, ADGM) require filed audited statements with the auditor's report for licence renewal; mainland DED renewals increasingly do too; banks demand it for facilities; and the FTA treats the audited statements — opinion included — as the anchor of the Corporate Tax computation. A qualified opinion therefore has commercial consequences beyond the audit: banks reprice, free zones query, and counterparties in tenders ask questions.

UAE-specific opinion issues recur. Going-concern qualifications and emphasis paragraphs appear where trading losses and negative equity meet — common in UAE SMEs post-expansion. Scope limitations arise from missing inventory counts or unconfirmed related-party balances in family groups, producing qualified opinions or disclaimers. Basis of preparation issues surface where entities use non-IFRS frameworks without disclosure.

The auditor landscape: UAE audit firms must be licensed (and for certain regulated work, approved by the specific authority — e.g. DFSA-registered auditors for DIFC entities). An ISA 700 report signed by an unlicensed firm is worthless for filing purposes — the first check any authority performs. Users reading a UAE auditor's report should check three things: the opinion type, any emphasis-of-matter on going concern, and the key audit matters — which reveal exactly where the auditor spent the most judgement.

UAE free zone authorities and banks treat the ISA 700 report as a licence-renewal and credit document, not just a compliance artefact. A clean opinion with an Emphasis of Matter on going concern still renews the licence — but the bank's credit committee will price the facility differently. Finance teams should brief their boards on what each paragraph signals before the report is issued, not after.

Gulf Star Marine Services LLC (revenue AED 28,000,000, materiality AED 280,000) presents two issues at audit completion:

• Issue 1: Management refuses to provide for a AED 1,500,000 disputed receivable from a sanctioned entity; the auditor's evidence shows recovery is remote. This is a material misstatement (AED 1,500,000 > AED 280,000) but not pervasive — it affects receivables and profit, not the statements as a whole.
• Issue 2: The auditor was appointed in February and could not observe the 31 December inventory count (AED 3,200,000); alternative procedures (roll-back from a March count, purchase/sales testing) provide only partial evidence. Scope limitation, material, but alternative procedures cover roughly 60% — assessed as not pervasive.

Opinion decision: two matters, each material-but-not-pervasive → qualified opinion ('except for' the effects of both matters). The Basis for Opinion section describes each matter with its AED amounts.

Contrast: if management had refused all access to accounting records, the scope limitation would be material and pervasive → disclaimer of opinion. If the AED 1,500,000 receivable were one of dozens of unprovided balances totalling AED 9,000,000 across every asset class → adverse opinion. The numbers drive the tree; the tree drives the wording.

Uncorrected misstatements ignored in aggregate. Each below materiality, together above it — ISA 700 requires the aggregate evaluation.

Wrong modification type. Qualifying when the matter is pervasive (should be adverse/disclaimer) — usually from reluctance to confront the client.

Vague Basis for Opinion. 'Except for inventory' with no amounts or explanation — ISA 705 requires the matter described so users understand it.

Dating errors. Report dated before subsequent-events procedures complete or before management approves the statements.

Emphasis of matter as a substitute. Using an emphasis paragraph to avoid qualifying on a material misstatement — ISA 706 prohibits this; emphasis draws attention to matters already properly presented.

Unlicensed signatory. A report that no UAE authority will accept because the firm lacks the relevant licence — check before engagement, not at filing.

ISA 705 governs modifications — the qualified/adverse/disclaimer mechanics. ISA 701 covers Key Audit Matters in listed-entity reports. ISA 570 handles going concern, the most common emphasis paragraph. ISA 706 covers emphasis-of-matter and other-matter paragraphs. The audit opinion itself is the product, and materiality is the yardstick every opinion decision is measured against.