Cyprus IP Box nexus sensitivity: tax at 0% to 100% nexus
Compare effective corporate tax and savings across nexus fractions using a consistent net-profit base. Includes a €500,000 illustration.
IPBox Cyprus editorial team · Ebrovia Ltd
Updated:
At the 2026 corporate rate, the simplified effective tax rate on net IP income is 15% × (1 − 80% × nexus). Full nexus gives 3%; 75% nexus gives 6%; 50% gives 9%; and zero nexus gives 15%. A lower nexus fraction increases the rate in this model.
Hold net income constant to isolate the nexus effect
A sensitivity table is useful only if the denominator remains clear. This guide uses the same net income attributable to qualifying IP in each scenario and changes only the nexus fraction. It does not compare turnover in one row with net profit in another.
Let P be net IP income and N the supported nexus fraction. Qualifying profit is P × N, the deduction is 80% × P × N, and the remaining amount is P × (1 − 80% × N). Applying 15% corporation tax gives the formula in the summary.
This is a simplified corporate illustration. It assumes the underlying asset and income qualify and excludes other tax adjustments, losses, foreign taxes and any minimum-tax effects.
Five scenarios on €500,000 net IP income
The figures are illustrative and use the same €500,000 net IP income throughout. The no-relief baseline is €75,000 tax at 15%.
| Nexus | IP Box deduction | Taxable IP amount | Tax at 15% | Effective rate | Saving vs baseline |
|---|---|---|---|---|---|
| 0% | €0 | €500,000 | €75,000 | 15% | €0 |
| 25% | €100,000 | €400,000 | €60,000 | 12% | €15,000 |
| 50% | €200,000 | €300,000 | €45,000 | 9% | €30,000 |
| 75% | €300,000 | €200,000 | €30,000 | 6% | €45,000 |
| 100% | €400,000 | €100,000 | €15,000 | 3% | €60,000 |
A ten-point nexus change has a specific effect
Within this simplified model, increasing nexus by ten percentage points reduces the effective rate by 1.2 percentage points: 15% × 80% × 10% = 1.2%. On €500,000 net IP income, that is €6,000 less tax.
Distinguish percentage points from percentage changes. Moving nexus from 50% to 60% is a ten-percentage-point increase, not a ten-percent increase in the original fraction. Clear labels prevent misleading statements about the expected benefit.
The relationship is useful for forecasting, but it does not mean nexus is a freely adjustable setting. The fraction must follow supported expenditure and the relevant asset history.
What can change the supported fraction
The Cyprus formula uses QE, acquisition costs, related-party R&D and the capped uplift. More qualifying development can affect the cumulative ratio, while acquisition or related-party expenditure can reduce it depending on the complete cost mix.
Use the actual formula to model a proposed change. Do not add an assumed ten points simply because a new developer is hired. The amount, nature, timing and asset connection of expenditure matter.
Retain historical costs. A current-year forecast based only on new internal development can overstate the fraction if the asset has significant earlier acquisition costs. Likewise, a financial impairment does not automatically establish that historical cost should be removed from the nexus schedule.
The company-wide rate can differ from the IP rate
If the company also earns non-IP profit, the total tax result needs that component. A 3% illustration for one eligible asset does not describe all consulting, resale or other income automatically.
For example, €500,000 net IP income at full nexus produces €15,000 tax in this model. Adding €100,000 other taxable profit at 15% adds €15,000, giving €30,000 on €600,000 total profit, or 5% before other adjustments.
The example shows why the rate should always identify its base. A company-wide blended rate, an effective IP rate and a tax-to-turnover ratio answer different questions.
Do not spend solely to improve a percentage
An additional development cost can reduce profit as well as alter nexus. A sensitivity table that holds profit constant does not capture the complete economics of that spending. Model the commercial return and total cash effect before making an investment decision.
Similarly, the cheapest development arrangement is not necessarily the one with the best after-tax outcome, but tax is only one factor. Capability, ownership, delivery and cross-border obligations also matter.
Use the table as a check on a full forecast. It can reveal impossible claims, such as a lower nexus producing a lower rate through the IP Box formula alone, without pretending to determine eligibility.
A quick model review
Before sharing the result, check the input basis and state the exclusions. The table should be reproducible by someone who did not build the spreadsheet.
- Use net IP income, not gross turnover.
- Support nexus with the asset expenditure history.
- Show the uplift cap in the underlying calculation.
- Keep non-IP profit separate.
- Identify the corporate rate and period.
- State other taxes and adjustments excluded from the model.
Common questions
Can 50% nexus still give a 3% rate in this formula?
No. At a 15% corporate rate and an 80% deduction, 50% nexus gives a 9% effective rate on the stated net IP income before other adjustments.
Can other deductions change the final company tax?
They may, subject to their own conditions and interactions. This table isolates IP Box relief and should not be presented as a complete tax computation.
Sources and scope
- Cyprus IP regulations, KDP 336/2016
Regulation 4 defines expenditure, the capped uplift and net income; regulation 5 requires records by intangible asset.
- Cyprus Income Tax Law 118(I)/2002, consolidated
Article 9(1)(κ) provides the 80% deduction. The corporate-rate examples use the 15% rate applicable from 2026.
General information, with illustrative examples. Eligibility and tax treatment depend on the facts and applicable law; this article is not an individual tax opinion.