FTA Tax Audit Readiness: How to Build a Defensible Evidence File

Quick answer: A defensible tax evidence file enables another reviewer to understand what the business reported, why a particular treatment was chosen, which legal rules were considered and which documents support the relevant facts.

Preparing that file before questions arise can reduce confusion and improve the quality of a response. It does not guarantee that the FTA will accept the taxpayer’s position.

Why the return alone is not the whole story

A Corporate Tax or VAT Return is a summary of the company’s reporting position. The underlying support may be spread across finance systems, invoice folders, emails, board records, customer contracts and technical memoranda.

When a question is raised much later, the people who made the decision may not remember the assumptions. A structured evidence file preserves that context.

The six parts of a useful tax evidence file

1. Legal entity and filing information

Keep the entity’s relevant registration details, Tax Period, submitted returns, confirmations and any material correspondence with the tax authority.

2. Financial reconciliation

Include final financial statements, Trial Balance and schedules that reconcile accounting amounts to the return. Where adjustments have been made, record their purpose and calculation.

3. Transaction-level records

Keep material contracts, purchase and sales invoices, credit notes, supporting schedules and records explaining the commercial purpose and performance of relevant transactions.

4. Legal analysis

Document the relevant law and guidance, the facts that matter to the conclusion, any uncertainty and any alternative treatments considered. Record the effective date and version of the authority relied upon.

5. Approval and review records

Retain evidence of the internal preparation, questions raised, independent review if commissioned, and management decisions. Identify what was not reviewed so the scope is not misunderstood.

6. Follow-up actions

Record missing documents, matters needing specialist advice and any subsequent correction or clarification. Assign responsibility and close the action with evidence.

Issues that deserve priority

A risk-based review should focus on matters that can materially affect the return or are more judgmental: Free Zone tax positions, cross-border VAT, related-party pricing, tax reliefs, significant accruals or provisions, unusual journal entries and changes in business operations.

A simple transaction with complete documentation may need much less work than a complex intercompany arrangement.

Prepare for a later reader

Write the file as if a competent professional who did not attend the original meeting will need to understand it several years later. Explain acronyms, identify documents clearly and distinguish statements of fact from judgments.

Avoid vague notes such as ‘confirmed with management’ unless the underlying fact and the supporting evidence can be identified.

Record retention and security

The required retention period and record-keeping duties can differ by tax and circumstances. Apply the current statutory rules relevant to the business and maintain secure, retrievable records. This article does not prescribe a single universal retention period for every document.

Limit access to financial records, use appropriate safeguards and ensure any external adviser has an authorised basis to receive the information.

Frequently asked questions

Is a tax evidence file legally required in exactly this format? No. This is a recommended organisational structure, not a claim that the law mandates these six folders.

Is a filed return enough documentation? Usually not for every material position. Supporting records may be required to substantiate the amounts and tax treatment.

Should the file be prepared only when an audit notice arrives? Important analyses and documents are generally easier to prepare and preserve when the underlying transactions take place.

Related reading

• Why CFOs Need an Independent Tax Review

• UAE Tax Health Check Before Filing

Official references

• Federal Tax Authority

• UAE Corporate Tax Law

Want to test the evidence behind a material tax position? Request a Tax Assurance Review.