How to claim the Cyprus IP Box: process, nexus calculation, records

You claim the Cyprus IP Box in the company's annual corporate tax return. There's no application form. In the return, 80% of the qualifying profit from each qualifying asset comes off as a deemed expense, an amount the law lets you deduct as if you had spent it. The other 20% is taxed at the corporate rate of 15% from tax year 2026, or 12.5% up to 2025.

Whether the claim holds up depends on the evidence behind it. You need records of qualifying income for each asset, development spend split by who did the work, and a nexus fraction you can recalculate when asked. You build those records during the year, so the claim is won or lost long before you file the return.

What qualifies for the Cyprus IP Box?

Two things must qualify, the asset and the income it earns. Check both before you do any arithmetic.

Under the nexus regulations, qualifying assets are the results of research and development: patents, computer software, utility models and similar legally protected rights. For most companies reading this, the asset is software the company wrote. Business names, brands, trademarks, image rights and other marketing IP are excluded by name, whatever they're worth.

One more class exists. Assets a competent authority certifies as "non-obvious, useful and novel" can qualify, but only for businesses with gross IP income of up to €7.5 million a year. Patents and software have no such income cap.

Qualifying income is the income that comes from the asset. That means royalties and licence fees, income built into the price of a product or service that uses the IP, and most sale proceeds. "Comes from" is the limit. A SaaS subscription, software sold as an online service, bundles the software with hosting, support and onboarding, and only the software's share is IP income. A split you can defend, applied the same way every time, is part of the claim.

This guide covers the mechanics. For why the regime exists, start with IP Box explained. For how it fits the rest of a product company's tax, read Cyprus tax for software companies.

How does the nexus fraction work?

It scales the deduction by how much of the development your company really did, or paid an unrelated party to do.

The top number, the numerator, is qualifying expenditure. That's your own R&D costs, meaning developer salaries and directly related overheads, plus R&D outsourced to unrelated parties, plus an uplift of 30% of that qualifying expenditure. The uplift can't exceed what you actually spent on buying the IP and on related-party outsourcing.

The bottom number, the denominator, is total expenditure. That's qualifying expenditure plus acquisition costs plus related-party outsourcing, with no uplift. The fraction is capped at 1. Multiply the asset's overall income, which is gross income less direct costs, by the fraction to get the qualifying profit.

Here it is in euros. Say your company has spent €100,000 on its own developers and €50,000 buying a half-finished codebase from a sister company. Qualifying expenditure is the €100,000. The uplift is the lower of 30% of that, which is €30,000, and the €50,000 related-party cost. So €30,000 counts, and the numerator is €130,000. The denominator is €150,000. The fraction is 0.87.

If the asset's overall income for the year is €300,000, qualifying profit is €260,000 and the deduction is €208,000. The remaining €92,000 is taxed at 15%. That's €13,800, an effective 4.6%. If all the development had been in-house, the fraction would be 1 and the tax €9,000, exactly 3%.

Look at what the uplift does. If your acquisition and related-party costs stay within 30% of your own qualifying spend, the uplift covers them completely and the fraction stays at 1. Hiring unrelated freelancers or an unrelated agency never dilutes the fraction, because their invoices count as qualifying expenditure in their own right.

The fraction is also cumulative. It's built from spending over the asset's entire life, never one year on its own. And you calculate it per asset, so a company with three products can have three different fractions.

What records do you need from day one?

Separate records of income and spending for each asset. The return shows the result, and the records let you defend it. Under reg. 5, a company that claims must keep books and records of income and expenditure separately for each intangible asset. In practice that means five things.

Keeping these up to date is bookkeeping. If you tag income and costs to assets as you post them, the year-end pack is a report you print. Rebuilding the split later from old payroll runs and contractor invoices is the most common reason we see companies abandon a claim.

How does the deduction land on the tax return?

As a deemed expense in the corporate income tax computation that goes with the annual TD4, the company's corporate tax return. For each qualifying asset, the company works out overall income, applies the nexus fraction to get qualifying profit, and deducts 80% of it. The rest joins the company's other taxable income at 15%. You choose to take the deduction return by return, and the law lets you give it up, in whole or in part, for any year.

The 2026 reform moved the return deadline. The return for tax year 2026 is due by 31 January 2028, and each later year's return is due on 31 January of the second year after it. The 2025 return keeps its 31 March 2027 deadline. From tax year 2026, you also pay the self-assessed balance by the same 31 January date.

If you expect the deduction, build it into your provisional tax estimate during the year. Provisional tax is the advance payment of this year's corporate tax, and without the deduction you'll overpay in instalments and wait for a refund. Our guide to provisional tax explains the two-instalment cycle.

You don't upload the nexus calculation. It's the working paper behind the figures on the return. Keep it with the company's records and produce it when asked or at an audit.

If the asset makes a loss, only 20% of it can be set against other income or carried forward. That mirrors the 80% deduction on profits. From tax year 2026, losses carry forward for seven years.

The IP Box or the new R&D deduction?

It depends on whether the product makes a profit yet. The 2026 reform left the IP Box alone but put a real alternative next to it. Spending on scientific research and R&D from 2025 to 2030 earns an extra 20% deduction. You can't take that extra deduction on any asset that has used the IP Box in any year.

A profitable product with a healthy nexus fraction is almost always better off in the IP Box at 3%. A company still spending heavily on development, with little qualifying profit to shelter, may get more from the extra R&D deduction for now. Run both numbers with your adviser before the first return that claims either. Once you apply the IP Box to an asset, the R&D deduction is closed for that asset.

One more caveat, for the few it affects. In groups with consolidated revenue above €750 million, the Pillar Two top-up rules, the global minimum tax, can claw the benefit back. Typical small Cyprus companies are nowhere near that threshold.

Should you get a tax ruling first?

Usually not. Most in-house software companies claim without one. A ruling is worth considering when the question of what qualifies has real edges:

• bundled revenue where the IP share is debatable
• development partly bought from a related group company
• an asset that sits between copyrighted software and something closer to a database or content
• a restructuring that moves IP into Cyprus

If you're applying for the regime as part of a wider move, our IP Box application service handles the set-up.

A ruling confirms a treatment on the facts you state. You still have to evidence those facts every year, so a ruling never replaces the records above.

Mistakes that lose the claim

• Claiming on the whole subscription. Bundled revenue needs a method you can defend for the asset's share. Sweeping in the full amount invites a challenge to the whole claim.
• No split of who did the development. If payroll and contractor invoices were never tagged by asset and by relationship, you can't show the nexus fraction. The Tax Department won't assume it in your favour.
• Treating a brand as IP. Marketing intangibles are excluded, however central they are to the business.
• Applying the uplift with nothing to cap it against. The uplift is limited to acquisition and related-party costs. A company with none of those gets no uplift, and adding one anyway overstates the fraction.
• Calculating once, at year-end of year three. The fraction is cumulative, so a late start means rebuilding years one and two before you can even begin the current year.
• Claiming the IP Box and the 2025 to 2030 extra R&D deduction on the same asset. The law rules that out. Pick one per asset.

Where Sumly fits in

Sumly keeps the records underneath the claim. Whether an asset or an income stream qualifies is a tax judgement, and your adviser makes it.

The IP Box add-on tracks the income you've tagged as qualifying and calculates the 80% deduction inside the books. So the year-end figure comes from the same live ledger your corporate return is prepared from, with every entry linked to its document. The spending split behind the nexus fraction is ordinary cost tagging in that ledger. Payroll, unrelated contractors, related-party invoices and acquisitions are each coded to the asset they built. The add-on costs €50 a month on top of your plan, and pricing has the current detail.

Sumly prepares the return work from those books. On Base you review and submit the returns yourself. On Plus, Sumly files every return except the year-end accounts. On Premium, your Sumly certified bookkeeper submits the returns for you. Whichever plan you're on, the deduction reaches year-end with its working papers attached, and those are the first thing an auditor asks to see.

Questions people ask