How the 9 Per Cent Corporate Tax Changes a UAE DCF and WACC

By Bill Anderson, FCCA, Chief Executive Officer, Assetica — 2026-07-02

Direct Answer: Corporate tax changes a DCF in four places. Cash flows move from pre-tax to post-tax. The tax charge is computed on adjusted taxable income, not on accounting EBITDA. The terminal value carries the same tax assumption in perpetuity, so it absorbs most of the reduction. And interest deductibility gives debt a modest shield inside the WACC, worth far less than the shields built into imported model templates.

A discounted cash flow model is a machine for converting assumptions into a number. Introduce a 9 per cent tax on income above AED 375,000, with 0 per cent below and 0 per cent on the qualifying income of a Qualifying Free Zone Person, and several of those assumptions change at once. The Ministry of Finance and the Federal Tax Authority publish the regime itself.

This article is about the model, not the filing. If your question is when the FTA expects a valuation and what the report has to contain, read when UAE corporate tax requires a valuation instead. What follows assumes you are building or reviewing a forecast and want the tax line in the right place.

How does UAE corporate tax change a DCF?

Mechanically, it inserts a line between operating cash flow and free cash flow, and it changes one input in the discount rate. Conceptually it does more than that, because the tax line is not a single percentage applied to a single number. It depends on what is deductible, on the period the profits arise in, and on the status of the entity earning them.

The most common failure we see in circulating models is simpler than any of that: pre-tax cash flows discounted at a post-tax discount rate. That is a mismatch of about the size of the tax itself, and it always flatters the answer. Whatever else you do, the numerator and the denominator have to be on the same basis.

Moving from pre-tax to post-tax cash flows

The unlevered free cash flow line in a tax-affected model runs in this order:

• Start with EBITDA from the operating forecast.
• Deduct the tax charge computed on adjusted taxable income for that year, not on EBITDA.
• Deduct capital expenditure.
• Deduct the increase in working capital, or add the release.

Two details are worth stating because they get lost. First, depreciation is not added back after the tax line, because it was never deducted from EBITDA; it enters only through the tax computation, where it reduces taxable income. Second, the tax charge is a cash outflow in the year the profit arises for modelling purposes, which is an approximation of payment timing. If the entity is close to a threshold or carries losses forward, that approximation is worth refining rather than accepting.

Tax is computed on adjusted taxable income, not accounting EBITDA

This is the part that separates a model from a placeholder. The corporate tax base is accounting profit adjusted by the rules in the legislation. Costs that are disallowable in whole or in part are added back before the rate is applied, which means the effective cash tax rate on a forecast is almost never exactly 9 per cent of accounting profit.

The adjustments that move the number most in UAE owner-managed businesses are the familiar ones:

• Costs that are not wholly and exclusively for the business, including personal expenditure run through the company.
• Entertainment expenditure, which is deductible only in part.
• Interest, where deductibility is subject to limitation rules. The limits and their computation are detailed, so confirm the current position with your tax adviser and against the FTA guidance rather than hard-coding a number from another jurisdiction.
• Payments to related parties that are not at arm’s length, which are restated before the charge is computed.
• Depreciation and amortisation as charged in the accounts, replaced by the treatment the tax rules require.

A model that applies 9 per cent to EBITDA understates the charge, because EBITDA is above the level at which several of these adjustments bite. A model that applies 9 per cent to accounting profit after tax-disallowable costs have already reduced it understates it as well, in the other direction. Build the computation as its own small schedule, with the add-backs visible, and let the cash flow statement pull from it.

What the AED 375,000 threshold actually does

The first AED 375,000 of taxable income is taxed at 0 per cent, with 9 per cent applying above it. For a business generating a few hundred thousand dirhams of taxable income, that is decisive. For the businesses that usually get a DCF, it is a rounding item.

The arithmetic is worth seeing once. On AED 4,700,000 of adjusted taxable income, the charge is 9 per cent of AED 4,325,000, which is AED 389,250. The threshold saved AED 33,750, which is about 0.8 per cent of pre-tax cash flow in the illustration below. It is not nothing, and it should be in the model, but it does not change a conclusion. Where it does change one is in small entities inside a group, where several companies each sitting below or near the threshold produce a materially different consolidated charge from one combined company.

A worked comparison of the same cash flows before and after tax

The figures below are illustrative, use round numbers, and describe no real company. They exist to show where the tax line sits and what it costs.

The tax line is AED 389,250, about 9.3 per cent of pre-tax free cash flow, and it removes roughly AED 3,900,000 of value. Notice that the reduction in value is proportionally larger than the reduction in the single year, because the charge repeats. That is the point of the next section.

The terminal value carries the tax assumption forever

In most DCF models of established businesses, the terminal value is the larger part of the answer. Whatever tax assumption you make in the final forecast year is the assumption you are applying in perpetuity, and it compounds through the capitalisation factor rather than appearing once.

Three consequences follow. An explicit forecast period that models tax carefully and a terminal value that quietly reverts to a pre-tax margin is internally inconsistent, and the inconsistency sits in the part of the model that matters most. A normalised terminal year should carry a normalised effective tax rate, which is usually not the rate of the final forecast year if that year contains unusual adjustments. And any assumption that a favourable tax position persists is, in a terminal value, an assumption that it persists indefinitely, which is a much stronger claim than it looks on the spreadsheet.

Sensitivity analysis should therefore flex the terminal effective tax rate alongside growth and discount rate, not just the first two. A table showing value across a range of terminal tax rates is more informative to a reader than another row of growth assumptions.

The tax shield on debt inside the WACC

Before corporate tax, debt in a UAE weighted average cost of capital carried no shield: the after-tax cost of debt equalled the pre-tax cost. With interest deductible, subject to the limitation rules, debt now costs less after tax than before it, and the WACC falls slightly for a business carrying borrowings.

The effect is real and small. Imported model templates that apply a 25 per cent shield by habit overstate it by roughly three times. On illustrative inputs of 15 per cent cost of equity, 7 per cent pre-tax cost of debt, and a 70:30 capital structure:

The correct adjustment is worth about 0.19 percentage points of WACC here. The imported one is worth 0.53, and adds roughly AED 1,500,000 of value that does not exist. The lesson is not that the shield is unimportant, but that it has to be computed at the rate actually paid, which for a Qualifying Free Zone Person on qualifying income is 0 per cent, meaning no shield at all.

One further point on consistency. If you are discounting unlevered free cash flow, the financing effect belongs in the WACC and nowhere else. Adding an interest saving to the cash flows and a shield to the discount rate counts it twice. Our note on enterprise value compared with equity value covers what the resulting figure actually represents before debt is deducted.

What QFZP status does to the model

A Qualifying Free Zone Person pays 0 per cent on qualifying income. In the illustration above, that returns free cash flow to AED 4,200,000 and value to AED 42,000,000, so the status is worth around AED 3,900,000 on these figures, close to 10 per cent of the answer.

Modelling it properly takes three steps rather than one switch:

• Verify, do not assume. Status depends on conditions being met, not on where the licence was issued. A model that turns the tax line off because the entity is in a free zone has made an assertion, not an assumption.
• Split the income. A free zone entity can earn both qualifying and non-qualifying income. The model needs both streams and the correct rate against each, which usually means the effective rate sits between 0 and 9 per cent rather than at either end.
• Price the risk that it ends. Either through scenarios, a probability weighting, or an explicit allowance in the discount rate. Pick one and say which.

Why the durability of QFZP status is an assumption to disclose

The status is conditional and tested year by year. A ten-year forecast that applies 0 per cent throughout is asserting that every condition continues to be met for a decade, through whatever changes to activities, customers and substance the business goes through. That may well be reasonable. It is still an assumption, and it belongs in the assumptions section where a reader can disagree with it.

A simple probability weighting makes the point. On the illustrative figures, weighting the qualifying outcome at 60 per cent and the taxable outcome at 40 per cent gives about AED 40,400,000, between the two extremes and more defensible than either. Whether 60:40 is the right weighting is a matter of judgement about the specific entity, and the judgement should be written down, not embedded.

For technology and recurring-revenue businesses, where free zone structures are common and where the forecast period does much of the work, this assumption often moves the answer more than growth does. Our guide to SaaS and technology valuation in the UAE covers the rest of that picture.

Matching the discount rate to the cash flows it discounts

Everything above reduces to one discipline. The discount rate and the cash flows must describe the same world.

• Post-tax cash flows need a post-tax discount rate, with the tax shield computed at the rate the entity actually pays.
• Cash flows for a qualifying free zone entity taxed at 0 per cent should be discounted at a rate whose cost of debt carries no shield.
• Unlevered cash flows are discounted at WACC and produce enterprise value; equity cash flows are discounted at the cost of equity and produce equity value. Mixing them produces neither.
• Nominal cash flows need a nominal rate. If the forecast is in real terms, the rate has to be too.

Where a model triangulates with market multiples, remember the multiples are observed on post-tax outcomes too, so a pre-tax DCF sitting alongside a multiple cross-check is not a cross-check at all. Our guide to valuation methods covers how the approaches are meant to corroborate one another.

Where the model goes after the tax line

A tax-affected model is more useful than the pre-tax version it replaces, because it answers the question an owner is actually asking: what is left. It also exposes decisions that used to be invisible, such as how much value rests on a free zone status nobody has tested, or how much of the answer sits in a terminal value built on one year of unusually low tax.

If you are building the forecast yourself, our notes on preparing financial projections and on building a financial model for fundraising cover the layers underneath the tax line. For a quick sense of range before any model exists, the business valuation calculator applies published reference multiples to normalised EBITDA, which is a different route to a similar sense-check.

Where the output has to be relied on by someone else, the model becomes a report, and the standards and documentation requirements that apply are set out in our corporate tax valuation work. Assetica does not audit and does not broker deals, so it has no stake in whether the number is high or low. A standard report is delivered in 5 to 7 business days from complete documents, and 2 to 3 on an expedited basis.

Every figure in this article is illustrative, including the discount rates and capital structure, and describes no real company. This is general information on valuation methodology under UAE corporate tax, not tax advice. Confirm your entity’s position with a qualified tax adviser.

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Speak to Assetica about Tax, IFRS & Specialist Valuation

Assetica is an independent business valuation firm in Dubai. We do not audit and we do not broker deals, so the number carries no conflict. Read more about tax, ifrs & specialist valuation, or book a free scoping call. Standard reports are issued in five to seven business days.

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