Filing the IR4 / T.D.4 Return in Cyprus | What to Know

Understanding the Company Income Tax Return (IR4 / T.D.4) Obligation in CyprusCopy link to section

The Company Income Tax Return (IR4 / T.D.4) is the annual corporate tax filing every entity registered in Cyprus must submit to the Cyprus Tax Department, a directorate of the Ministry of Finance. The obligation is anchored in the Income Tax Law No. 118(I)/2002 and the Assessment and Collection of Taxes Law of 1978, and it applies whether or not the business traded during the year.

This article explains who must file, how to register for tax, what the return declares, when it falls due, and what happens if you miss it. The official government summary of income tax registration sets out the starting point for any foreign owner.

It is most relevant to non-resident owners and their advisers who hold a Cyprus company and need to keep its corporate tax filings in order from outside the country.

Which Companies Must File the IR4 / T.D.4 ReturnCopy link to section

Every legal entity registered in the Republic must file the IR4 / T.D.4, with no carve-out for dormant or inactive firms. A company that earned nothing still files a nil return.

A change to residency rules sharpens this point. From 1 January 2026, all companies incorporated in Cyprus are deemed Cyprus tax resident under an "incorporation test", unless a double tax treaty provides otherwise.

That definition now reaches every company formed under the Cyprus Companies Law, and a business that has transferred its registered office to Cyprus counts as incorporated there. For a foreign owner, the practical effect is simple: holding the company is enough to create the filing duty.

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Tax Registration and Obtaining a Tax Identification NumberCopy link to section

Before any return can be filed, the company needs a Tax Identification Code (TIC). This single identifier covers income tax, VAT, and all other tax dealings with the Cyprus Tax Department, and for a legal entity it runs to nine characters beginning with the digit 1.

Registration is the company's own responsibility, and a newly incorporated entity must register and obtain a TIC within 60 days of incorporation. The application is made on Form T.D. 2002 at the nearest Tax District Office; in practice many companies receive the TIC as part of formation and delegate the portal setup to an accountant or corporate service provider.

Distance is not a barrier. Non-residents can register through the Tax For All portal without a Cyprus address, by supplying a home-country tax code or national ID together with a short letter stating the reason for registration.

Two numbering schemes are in circulation, and both are valid. Codes issued through the Tax For All system from 27 March 2023 begin at 60000000, while older codes started with 0 or 9.

What the IR4 / T.D.4 Return Must ReportCopy link to section

The return is built on audited financial statements, prepared under IFRS as adopted by the EU and drawn up on a calendar-year basis. The T.D.4 declares profits, computes the tax, and must be signed by the auditors or tax consultants as well as by a company director.

In substance, the return brings together gross and exempt income, deductible expenses, the taxable profit or loss, the tax computed at the applicable rate, any credits and reliefs such as the IP Box or Notional Interest Deduction, and provisional tax already paid. The audited accounts behind it carry the statement of financial position, profit or loss, changes in equity, cash flow, and the notes.

One filing trap catches groups with related-party dealings. A Summary Information Table of controlled transactions must accompany the T.D.4 for any Cyprus tax-resident company that transacts with associated persons, and there is no minimum threshold: a single euro of intercompany activity triggers it.

The full transfer pricing Local File is a separate, higher bar. It applies only where a transaction category reaches €2,500,000, €5,000,000, or €10,000,000, depending on the category.

Micro-enterprises meeting certain conditions may be exempt from the statutory audit, yet they still keep records and file the return. Detailed bookkeeping rules sit outside the scope of this article.

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Filing Deadlines and Frequency for the IR4 / T.D.4Copy link to section

Filing is annual, one return per calendar tax year. The IR4 / T.D.4 goes in through TAXISnet 15 months after the year-end, or by a date the Commissioner sets.

For tax years up to and including 2025, that 15-month rule lands the deadline on 31 March of the second year after the tax year. From tax year 2026, it moves earlier, to 31 January of the second year, as the PwC summary of Cyprus tax administration confirms.

Two transitional extensions have been officially notified through Decrees KΔΠ 358/2025 and 359/2025, issued 28 November 2025. They reshape the near-term calendar for older years and the accompanying controlled-transactions table.

Provisional tax runs on its own clock, separate from the return. Companies pay estimated current-year tax in two equal instalments, on 31 July and 31 December of the tax year, and the final balancing self-assessment is made on Form I.R.158A.

A provisional estimate can be revised without the 10% surcharge only up to 31 December of the same tax year. After that date, an under-declaration cannot be corrected penalty-free.

The New 2026 Deadline Change and What It Means for CompaniesCopy link to section

From tax year 2026, the corporate return deadline is permanently fixed at 31 January of the second year following the tax year. For a 31 December 2026 year-end, the T.D.4 is therefore due 31 January 2028, two months earlier than the old 31 March date.

The stated aim is to give companies more time to prepare accurate audited accounts within the cycle. The real consequence for owners is the opposite kind of pressure: because the audit must be complete before the T.D.4 can be filed, the audit has to finish earlier than it historically did.

The balancing payment shifts in step. From tax year 2026, the final self-assessment payment aligns with the new filing date.

A wider record-keeping change also takes effect from 1 January 2026. Documents supporting the return must be kept for six years measured from the submission deadline or the actual submission date, whichever is later, rather than from the end of the tax year.

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Electronic Filing of the IR4 / T.D.4 via the TAXISnet PortalCopy link to section

The company return is filed electronically through TAXISnet, the Cyprus Tax Department portal at taxisnet.mof.gov.cy. Migration to the newer Tax For All system is under way but not yet complete for corporate income tax, so the T.D.4/IR4 and the TD5 provisional tax declaration remain on TAXISnet.

Electronic filing is mandatory for any entity obliged to file under the Assessment and Collection of Taxes Law. A Cyprus TIC is needed to register for the portal.

The portal carries no geographic restriction, so a non-resident director can file and pay from anywhere. An accountant can also log in under their own credentials and file for clients once a formal authorisation is registered with the Tax Department.

Payment follows a Payment Reference Number, or PRN, generated when the return is filed. Settle either inside TAXISnet or through JCCSmart at jccsmart.com, which accepts Cyprus and international cards and bank transfers.

The Tax Department does not charge a fee for filing the IR4 / T.D.4 itself. Download the PDF confirmation after every submission and keep it as proof.

Self-Assessment and Payment of the Tax DueCopy link to section

Tax is paid in two stages. A Temporary Tax Assessment estimates the current year's taxable profit and is settled in two equal instalments, on 31 July and 31 December; the final position is then declared on Form I.R.158A.

Up to FY2025 the balancing payment fell due by 1 August of the following year. From FY2026 the self-assessment and balancing payment align with the new cycle, and an underpayment must be cleared by the relevant date to avoid penalty interest accumulating.

Accuracy on the provisional estimate matters financially. If the provisional profit declared comes in below 75% of the actual profit, a 10% surcharge applies on the shortfall, alongside interest.

The return itself carries corporate income tax at 15% on net taxable profits from FY2026, up from 12.5% applied through FY2025. Special Defence Contribution and General Healthcare System contributions may also feature where relevant.

Keep the supporting documents for six years from the return's due date. The authority can ask for records retrospectively across that window, so archive contracts, notices, and correspondence in both physical and digital form.

Filing Obligations for Loss-Making and Non-Resident Cyprus CompaniesCopy link to section

No company escapes the return on grounds of inactivity. A loss-making or dormant entity files a nil return, and being out of profit confers no exemption.

The 2026 incorporation test changes the starting assumption for residency. Because every company formed under Cyprus law is now deemed tax resident unless a treaty says otherwise, a business managed and controlled abroad that claims non-resident status must actively confirm and document that treaty position.

Such a company should still obtain a TIC, register on TAXISnet, and file the IR4 / T.D.4 each year, stating the basis of any non-residency claim. No general filing exemption for non-resident entities is confirmed in the official sources.

Regardless of activity type or turnover, every Cyprus-registered company maintains accounting records under IFRS and prepares annual financial statements. The detail of those records belongs to bookkeeping rules rather than to the filing itself.

Penalties for Late, Missing, or Incorrect FilingCopy link to section

The penalty framework is changing materially with the 2026 reform. Through FY2025, a late return drew a flat €100 penalty, failure to keep proper records €200, a 5% surcharge applied to overdue tax, and interest ran at roughly 1.75% per annum.

From 2026 the structure becomes tiered, scaled to entity size by the previous year's gross income and to the nature of the breach, with €1,000,000 of gross income as a dividing line. Fixed penalties under the reformed law range between €250 and €2,000.

Percentage charges continue to bite on unpaid tax: 5% initially, with a further 5% where payment is delayed beyond two months. Where a taxpayer does not fix a violation within 60 days of a formal notice, the Commissioner can escalate, and separate breaches accumulate independently.

Enforcement can reach beyond money. From 1 January 2027, the Commissioner may suspend operations and seal premises, for no more than ten days and after three written notices, where serious non-compliance persists, including failure to submit at least two tax returns or unpaid tax exceeding €20,000 including surcharges.

In persistent cases a company can be struck off the Registrar, and directors may face personal liability. For a non-resident owner, the takeaway is that a missed Cyprus return is not a quiet matter that resolves itself.

ConclusionCopy link to section

Holding a Cyprus company creates a hard annual filing duty that survives dormancy, losses, and distance, and the 2026 reform raises the stakes by pulling the deadline forward to 31 January, lifting the tax rate to 15%, and replacing the old flat fines with tiered penalties up to €2,000.

The single most useful step is to lock in the audit timetable early, because nothing can be filed until the audited accounts are signed. Confirm your residency position under any treaty in the same exercise, since the default is now Cyprus residency.

How Expanship Can Help Your Business in CyprusCopy link to section

Expanship prepares and files the Company Income Tax Return (IR4 / T.D.4) for foreign-owned entities, manages the provisional tax and self-assessment timetable, and coordinates the audit so submission deadlines are met from abroad. The same team supports the wider obligations a non-resident owner carries in Cyprus.

• Company incorporation and structuring
• Registered agent and registered office services
• Ongoing compliance and filing management, including the IR4 / T.D.4 and provisional tax
• Accounting, bookkeeping, and coordination of statutory audit
• Economic-substance and beneficial-ownership support
• Introductions to banking partners

To discuss your Cyprus tax filings and ongoing compliance, contact Expanship Cyprus.

Frequently Asked QuestionsCopy link to section