Deductions are where a Corporate Tax return is either accurate or optimistic. Every dirham of allowable expense reduces the taxable income the 9% applies to, so the temptation is to claim broadly. The law is narrower than many businesses assume, and a deduction that does not meet the test is not a saving. It is an exposure waiting for an audit. The rules are not complicated, but they are specific, and worth knowing before the return, not after.
The general rule: wholly and exclusively for business
An expense is deductible where it is incurred wholly and exclusively for the purposes of the business, and is not capital in nature. Two words carry the weight. Wholly and exclusively excludes private and dual-purpose spending, so an owner's personal costs run through the company do not qualify. Capital in nature excludes the cost of acquiring or improving long-lived assets, which are relieved through depreciation rules rather than as an outright deduction. Most disputes about deductions come back to one of these two points.
Expenses that are limited
Some genuine business costs are only partly deductible. Entertainment expenditure is deductible up to half of the amount incurred, on the view that it carries a private element. Interest is deductible only within the general interest limitation, which caps net interest by reference to earnings. Where a cost is restricted, the restricted portion is added back in the return, and treating the whole amount as deductible overstates the deduction and understates the tax.
Expenses that are not deductible at all
Certain items are specifically disallowed. Administrative fines and penalties are not deductible. Bribes and other illicit payments are not deductible. Donations to bodies that are not approved public benefit entities are not deductible. Corporate Tax itself is not deductible. Dividends and profit distributions are not deductible, since they are a distribution of profit rather than a cost of earning it. These are add-backs regardless of how they are recorded in the accounts.
Documentation is part of the deduction
A deduction is only as strong as the evidence behind it. The Authority can ask you to show that a cost was incurred, that it was for the business, and that it meets the test. Invoices, contracts, and a clear business rationale are what turn a claimed deduction into a defensible one. A large deduction with thin support is one of the easier things for a review to challenge, and one of the harder things to reconstruct later.
What to do about it
Apply the wholly and exclusively test honestly, and strip out private and dual-purpose costs before they reach the return. Flag the limited categories, entertainment and interest, and restrict them correctly. Add back the specifically disallowed items whatever the ledger says. And keep the evidence with the transaction. A well-prepared return does not claim everything. It claims what the law allows, and can show why. That is worth more than an aggressive number that does not survive a question.
This article is general information on UAE Corporate Tax and is not tax advice. The deduction rules and limits should be confirmed against current legislation. We would be glad to review your deductions before you file.