Does a Small Irish Company Need iXBRL Accounts?

What iXBRL adds to an ordinary set of accounts

Revenue describes iXBRL as financial information which people can read and software can interpret through tags identifying accounting concepts. It is a reporting format, not a new kind of company and not a synonym for audited accounts. The human-readable presentation and structured information need to describe the same figures.

Revenue receives iXBRL financial statements through ROS as part of the Corporation Tax return process. Renaming a PDF or emailing it to a presenter does not create tagged financial statements. Ask the accountant what file will be prepared, which company and period it covers, and who will submit it.

For a business owner, the practical issue is the handover: an accounts-preparation engagement, a tagging assignment and a tax-return submission can be separate pieces of work. Do not assume that the word accounts in a quotation includes every one of them.

• Revenue: iXBRL format and the CT1 process

Check Revenue's categories before applying a size test

Revenue identifies taxpayers managed by Large Corporates Division or High Wealth and Financial Services Division, and Section 110 special purpose vehicles, as mandatory categories. Outside those categories, its public guidance lists three size conditions together for the ordinary exclusion. This is not a choose-any-two exercise.

The public page describes total assets before deducting liabilities, turnover and average employees. Do not use net assets after loans, profit instead of turnover, or today's headcount instead of the relevant average. Give the preparer the actual accounts and staffing information rather than guessing from the business's size or company name.

• Revenue: who must submit iXBRL financial statements

At an exact threshold, resolve the wording rather than guessing

There is a boundary-wording difference in the guidance checked: the public page says less than for assets and turnover, while Part 2.1 of the July 2026 manual says does not exceed. At exact equality, ask the adviser to confirm treatment with Revenue before choosing the CT1 option.

Keep the answer with the period's filing instructions. A rule-of-thumb spreadsheet should not silently decide an edge case where the official descriptions differ. Likewise, tell the accountant about an unusual financial period, a group structure or a Revenue notice rather than expecting a short public checklist to settle every circumstance.

• Revenue: public size-test wording
• Revenue manual: Part 2.1, detailed exclusion criteria

Two examples: why debts and low profits do not settle the answer

Consider two fictional businesses outside the special mandatory categories. A small design LTD has EUR70,000 of total assets, EUR240,000 turnover and an average of three employees. Its figures sit well below the public size limits. Its accountant can review the exclusion and document the appropriate CT1 route; that is different from declaring that no accounts or tax work is needed.

Now consider a growing equipment business with EUR5 million of assets, EUR4.8 million of borrowing and no other liabilities, EUR2 million turnover and six average employees. Its net assets are only EUR200,000, but borrowing does not reduce the asset measure used here. Low net assets and a small team do not make it pass every condition.

These examples deliberately avoid exact thresholds. They are illustrations of which figures to identify, not assessments of real companies. When asking for help, send the underlying balance sheet and profit and loss information securely, and explain whether any measure is uncertain. The adviser should record the decision rather than leaving a director to infer it from a fee description.

CRO small-company status and audit exemption answer other questions

The Companies Act's small-company regime uses its own qualifying conditions, including a two-out-of-three size assessment. Revenue's iXBRL exclusion is a different test. Do not copy the CRO conclusion into the tax-return instructions without checking the Revenue position separately.

Audit exemption, the statutory accounts, a permissible abridged CRO filing copy and the Revenue filing format are distinct decisions. A company can need an explanation of more than one route. An accountant who says the business qualifies as small should identify what that conclusion permits, rather than treating it as a general release from reporting.

CRO's financial-statement requirements concern the accounts attached to its annual return, with relevant exemptions. Revenue's manual says abridged company-law accounts are not a valid substitute for its required submission. Keep a clear version list: approved accounts, CRO filing copy and any Revenue file, with their purposes and dates.

• Companies Act: Section 280A, small-company qualification
• CRO: financial statements and annual-return attachments
• Revenue manual: Part 3, abridged accounts limitation

If iXBRL is not required, there is still a tax-return handover

Revenue's manual requires CT1 accounts extracts in full where a taxpayer neither elects nor is obliged to file iXBRL. An exclusion changes the reporting route, not the need to establish reliable figures. Obtain confirmation of which route the preparer selected for the relevant period.

For a newly formed company, agree who reconciles the bookkeeping, resolves director-funded costs and prepares the tax computation. Identify missing bank statements, sales records and opening balances early. A simpler reporting route is not a reason to deliver incomplete records the day before filing.

If somebody describes the company as inactive, ask which specific reporting conclusion follows. No sales, no employees and no bank account are not interchangeable descriptions. Give the adviser the transaction history and any Revenue correspondence instead of selecting an inactivity option merely because the company has not yet found customers.

• Revenue manual: CT1 accounts extracts and reporting options

If iXBRL is required, agree the contents and the tagging work

Revenue's filing guidance covers the financial statements and relevant reports, notes and a detailed profit and loss account. Confirm the required contents for the company's reporting framework and exemptions with the accountant. Do not commission an isolated balance-sheet conversion and assume it covers the whole submission.

The detailed profit and loss account matters because Revenue requires more detail than the company-law profit and loss format provides. Its guidance requires a fully tagged DPL with every iXBRL return. Ask the preparer to confirm that the underlying ledger breakdown is available and reconciles to the final accounts.

Revenue also specifies mandatory tags, including zero-value items where applicable. Handing over a visually neat document is therefore only part of the job. Agree who checks tagging completeness and corrects errors, especially if one firm prepares the accounts and another converts the file.

• Revenue: required contents and mandatory tags
• Revenue: detailed profit and loss account requirements

Keep the CT1 deadline and the iXBRL timetable separate

Revenue's ordinary ROS timetable puts CT1 and the tax balance nine months after the accounting period, on or before the 23rd of that ninth month. Preliminary tax is separate. Ask the accountant for a period-specific calendar, including the accounts approval and information-handover dates.

The manual permits iXBRL within three months after the CT1 due date under an administrative practice. That does not postpone CT1 or payment. It also says refunds and tax clearance will not issue until required iXBRL is filed, even within that period; a CT acknowledgement alone is insufficient.

The manual states that draft iXBRL statements are no longer accepted from 1 January 2026. Genuine deadline difficulties should be raised with Revenue's Operational Branch. Do not rely on an older article's draft-filing workaround or treat an adviser enquiry as an extension already granted.

• Revenue: Corporation Tax payment and return deadlines
• Revenue manual: Parts 2.1 and 3.1.4, timing and draft statements

A file needs the correct taxonomy and a checked submission result

A taxonomy links the tags to accounting concepts. Revenue publishes accepted versions and the financial-period conditions for using them. Ask the tagging provider which accepted taxonomy applies to these accounts; the newest-sounding filename is not a substitute for matching the framework and period.

Revenue validates uploaded files and sends error notifications to the ROS inbox. Its technical guidance recommends the test facility before submission. Agree who monitors the result and handles corrections. A successful conversion or upload attempt should not be your only completion evidence.

Keep the submitted file, the final accounts it represents, the relevant company and period identifiers and the returned filing status together. If the result is unclear, ask the presenter to explain it and use Revenue's published support channels where appropriate. Do not send private accounts to an unverified email address offering a quick repair.

• Revenue: accepted taxonomies and period conditions
• Revenue: validation, testing and technical error guidance

Checklist for a useful accounting quotation

Start with a short non-confidential brief, then use the accountant's agreed secure channel for the records. State what is already finished and what remains uncertain. This lets a provider distinguish routine preparation from a tagging-only assignment, a first-year review or overdue work requiring a separate assessment.

• Identify the company, accounting periods and current filing deadlines.
• Supply total assets before liabilities, turnover and average employee information.
• Mention the relevant Revenue division, special status or notices received.
• Describe the bookkeeping system, record gaps and reconciliation status.
• Confirm who prepares and approves the statutory accounts and tax computation.
• Ask who assesses the iXBRL route and completes tagging or CT1 extracts.
• Assign ROS submission, validation monitoring, corrections and completion evidence.
• Agree the deliverables, exclusions and total payable before authorising work.

What to arrange through StartCompany.ie

StartCompany.ie's accounting service connects businesses with an accountant for their requirements. Request a quote covering the actual periods, records and filing work. Ask explicitly whether an iXBRL assessment, tagging and ROS submission can be provided, and whether each is included in the agreed engagement.

iXBRL tagging is not automatically included in company formation or routine B1 filing. Tax registration is another separate service: obtaining a registration does not prepare the annual accounts or complete a Corporation Tax return. If several providers are involved, name the person responsible for coordinating the final figures and submission evidence.

Use the accounting enquiry before buying unrelated filing support. Explain any approaching deadline or unresolved Revenue message, confirm available assistance and agree total payable. No company formation, accounting enquiry or registration order guarantees a particular tax treatment, refund, tax clearance or banking outcome.