The Notional Interest Deduction (NID) is one of the quieter but more powerful features of the Cyprus corporate tax system — and it survives the 2026 reform intact. It lets a company claim a tax deduction for a notional (deemed) interest cost on new equity it introduces, even though no actual interest is paid. The effect is to put equity financing on a more level footing with debt, and for capital-heavy, financing and holding companies it can reduce the effective tax rate well below the 15% headline.
This guide explains what the NID is, how the deduction is calculated, the all-important 80% cap, and where it adds the most value. It pairs with our corporate tax in Cyprus 2026 guide, the holding company guide and the IP Box regime, with which the NID is frequently combined.
What the NID is
The NID is a deemed interest deduction on new equity introduced into a Cyprus company, designed to put equity financing on a more level footing with debt. Normally, interest on debt is tax-deductible while a return on equity (dividends) is not — a structural feature that pushes companies toward borrowing rather than raising capital. The NID corrects this distortion: when shareholders inject genuine new capital, the company can deduct a notional interest cost on that capital against its taxable profit. No cash leaves the company and no interest is paid to anyone; the deduction is purely notional, yet it reduces the corporation-tax base in the same way a real interest expense would.
New equity for NID purposes is paid-up share capital and share premium introduced into the company on or after 1 January 2015. It excludes old equity at 31 December 2014, capitalised revaluation surpluses and amounts derived directly or indirectly from reserves existing at that date. Group funding needs the separate one-deduction and anti-abuse checks in Article 9B. The funds must be employed in the business, with the deduction limited by taxable income arising from that new equity.
The NID is available to Cyprus tax-resident companies and to Cyprus permanent establishments (PEs) of non-resident companies. Because it attaches to the equity rather than to a particular transaction, it is an annual, recurring deduction for as long as the qualifying new equity remains invested and continues to generate taxable profit. That recurring character is part of what makes it so valuable: a single qualifying capital injection can support a deduction in every subsequent year, not just the year of the contribution. It is best understood not as a one-off incentive but as a permanent structural feature of how Cyprus taxes equity-funded returns.
It is worth being precise about what the NID is not. It is not a cash subsidy, a grant, or a refund — nothing is paid to the company or its shareholders. It is not a deduction for dividends paid; whether dividends are distributed is irrelevant to the NID. And it is not a deduction the company can simply assume — it must be supported by evidence that the equity is new, that it was contributed on or after 1 January 2015, and that it is genuinely employed in income-producing activities. Where any of those elements is missing, the deduction falls away.
How the deduction is calculated
The NID equals the qualifying new equity multiplied by a reference rate, before the 80% cap is applied. The formula is deliberately simple:
NID = new equity × reference rate
The reference rate is the 10-year government bond yield of the country in which the new equity is invested, plus a 5% premium. Tying the rate to the country where the funds are used rather than to Cyprus alone means that equity deployed into a higher-yield jurisdiction produces a proportionately larger notional deduction. The Cyprus Tax Department publishes the relevant 10-year yields each year; its 2026 reference-rate schedule uses yields as at 31 December 2025.
Two points commonly trip companies up. First, the relevant yield is the one for the jurisdiction where the equity is actually employed, which has to be identified and documented year by year. Second, the 5% premium is a fixed statutory add-on, not a variable — it is built into the reference rate regardless of the underlying yield. The table below shows how the reference rate and the resulting notional deduction move with the published yield, holding new equity constant.
| 10-year government bond yield | + 5% premium | Reference rate | NID on €1,000,000 new equity |
|---|---|---|---|
| 2.0% | 5% | 7.0% | €70,000 |
| 3.0% | 5% | 8.0% | €80,000 |
| 4.5% | 5% | 9.5% | €95,000 |
| 6.0% | 5% | 11.0% | €110,000 |
The 80% cap
However large the notional figure, the NID is limited: it cannot exceed 80% of the taxable profit generated by the assets financed with the new equity. That cap is the single most important constraint on the deduction.
The NID is capped at 80% of the taxable profit generated by the assets financed with the new equity, calculated before the NID. It cannot create or increase a tax loss, and any unused NID is not carried forward to later years. So at most it shelters 80% of the relevant profit — meaning at least 20% of that profit remains in the Cyprus corporate-tax base. At a 15% rate that is an illustrative 3% of the related profit before other rules, not a guaranteed final group tax rate.
The practical effect is that the cap, not the reference rate, usually determines the deduction. Where the notional figure (new equity × reference rate) is larger than 80% of the related profit, the 80% ceiling applies and the surplus notional amount is simply lost. Where the notional figure is smaller, the full notional amount is deducted and the cap is not reached. The worked example below shows both the calculation and the interaction with the cap.
There is also a logic to the cap that is easy to miss. By tying the limit to the profit generated by the financed assets, the law ensures the deduction tracks genuine economic activity: equity left idle, or invested in assets that produce no taxable income, supports little or no NID. This is one reason the deduction rewards companies that put fresh capital to productive use rather than those that merely sit on it. It also means the NID cannot be used to manufacture losses that shelter unrelated income — the deduction can only ever reduce the equity-financed profit, never turn it negative.
Shareholders inject €1,000,000 of new equity, employed in the business. Suppose the reference rate is 8% (a 3% bond yield + the 5% premium), so the notional figure is €80,000. If the taxable profit generated by that equity is €120,000, the cap is 80% × €120,000 = €96,000. The NID is the lower of the two — €80,000 — so €80,000 is deducted, leaving €40,000 taxable at 15% = €6,000. Without the NID, the €120,000 would have borne €18,000 of tax, so the deduction saves €12,000. If instead the related profit were only €90,000, the cap (80% × €90,000 = €72,000) would bite and the deduction would be limited to €72,000, with €8,000 of the notional figure lost. Figures are illustrative; the actual reference rate depends on the published yields.
Debt versus equity: why the NID matters
The NID exists to neutralise the long-standing tax bias toward debt. Before the NID, a company that funded itself with borrowings could deduct the interest, while a company funded with equity could deduct nothing for the cost of that capital — so the tax system effectively rewarded leverage. The NID narrows that gap by granting an equity-funded company a deduction broadly comparable to the interest a debt-funded company would claim. The comparison below sets out the key differences.
| Debt financing | Equity financing with NID | |
|---|---|---|
| Tax-deductible funding cost? | Yes — actual interest paid | Yes — a notional interest cost |
| Cash leaves the company? | Yes — interest is paid to the lender | No — the deduction is purely notional |
| Deduction limited? | Subject to interest-limitation rules | Capped at 80% of related taxable profit |
| Adds leverage / repayment risk? | Yes | No — strengthens the balance sheet |
| Withholding / lender considerations? | Possible, depending on the lender | None — no payee |
| Recurring while in place? | While the loan is outstanding | While the qualifying equity remains invested |
Because the NID strengthens rather than weakens the balance sheet — there is no loan to service or repay — it is particularly attractive where a group wants the tax efficiency of leverage without the financial risk. It also requires a separate comparison with the interest-limitation rules that may affect debt funding.
Where the NID adds most value
The NID delivers the greatest benefit where a company is funded with substantial new equity that generates taxable profit. In practice that means:
- Financing companies — group treasury and intra-group financing structures funded with equity rather than debt.
- Holding and investment companies capitalised with new equity to acquire or fund subsidiaries.
- Capital-intensive businesses raising fresh equity to fund expansion or major assets.
The NID must be matched to related taxable profit. Exempt dividends or gains do not automatically create an NID base, and interaction with the IP Box regime needs a separate calculation. It is a statutory deduction, but any effective-rate comparison must also consider other applicable rules, including minimum-tax rules for in-scope large groups. By deducting up to 80% of the relevant profit, the NID can reduce the effective rate on equity-financed returns well below the 15% headline.
Documentation and annual review
The NID is largely a documentation exercise, and that is where claims succeed or fail. Because the deduction must be re-tested every year, a company should keep a clear, contemporaneous record of three things: the amount and date of each qualifying equity contribution, the country in which that equity is invested together with the published reference rate applied, and the taxable profit generated by the financed assets that supports the 80% cap. Without this trail, the deduction is difficult to defend on review.
Practical points to revisit annually include whether the new equity remains invested in the same jurisdiction (a change can alter the reference rate), whether any of the original equity has been returned to shareholders or recycled within the group (which can reduce or disqualify it), and whether the profit generated has changed enough to make the 80% cap bite differently than in prior years. Because unused NID lapses, a company that does not match its equity, reference rate and related profit carefully each year can quietly leave deduction unclaimed. The reference rates are published annually by the Cyprus Tax Department, so the calculation should be refreshed once those figures are available rather than rolled forward from the previous year.
Getting it right
The NID is genuinely valuable but technical, and several conditions must be satisfied each year. The equity must be genuinely new — introduced from 1 January 2015 as paid-up capital or share premium — properly documented, and employed to produce taxable income. The correct reference rate (the right country's 10-year yield plus the 5% premium) and the 80% cap must be applied for each relevant year, and unused amounts simply lapse rather than carry forward. Anti-abuse rules deny the NID on artificial or round-trip arrangements — for example, equity injected purely to generate the deduction and then recycled — so the commercial rationale and the flow of funds need to stand up to scrutiny.
If your company is raising equity or running a financing or holding structure, talk to us about claiming the NID correctly. See our tax advisory service, and model the headline position with our corporate tax calculator. This article is general information on the 2026 framework, not personalised tax advice.