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CanadaProfessional Corporation Tax Services in Ireland
Aone Outsourcing Solutions delivers professional corporation tax services to limited companies, SMEs, startups, and scaling businesses across Ireland. Whether you're filing your first CT1 return or managing a complex group structure, we ensure your corporation tax obligations are met accurately, on time, and fully aligned with Irish Revenue Commissioners requirements — so you can focus on growth, not tax risk.
- ✨ +5,000 Tax Returns Filed
- ✨ +€1M Saved Across Client Portfolios
What's Included Card:
- ✔ CT1 return preparation & filing
- ✔ Corporation tax liability calculation
- ✔ Deferred tax & capital allowances
- ✔ Year-round tax advisory support
Corporation Tax Services for Irish Companies, Accountancy Firms & SMEs
Are you looking for reliable, expert corporation tax services in Ireland? Aone Outsourcing Solutions provides professional corporate tax return services and outsourced corporation tax support to ensure your Irish limited company fully complies with Revenue Commissioners requirements - whether you're a sole director startup, a small to medium enterprise (SME), or a chartered accountant with multiple portfolios.
Our experts handle it all: calculating your corporation tax liability, preparing and filing your CT1 return, claiming capital allowances, deferred tax, research and development tax credits, and communicating with Revenue. We serve companies across Ireland, including Dublin, Cork, Limerick, and Galway, leveraging secure cloud-based software such as Xero, QuickBooks, Sage, and ROS (Revenue Online Service). We ensure your tax returns are accurate, on time, and ready for audit.
Our Revenue-aligned workflow and multi-level review process make us a genuine extension of your finance function. With a dedicated tax team maintaining ACA/CPA-standard documentation, your internal staff can focus on running the business — while we manage every aspect of your corporation tax position.
The Benefits of Outsourced Corporation Tax Services in Ireland
Corporation Tax Expertise
Managing corporation tax in-house demands specialist knowledge that most Irish SMEs simply don't have on staff. Our Ireland corporation tax compliance services ensure you have access to qualified tax professionals who can advise you on Irish Revenue regulations, CT1 filing requirements and corporate tax compliance in Ireland without having to employ a full-time specialist.
Cost-Saving Benefits
Hiring a qualified in-house corporate tax specialist in Ireland costs upwards of €55,000 per year before employer PRSI and benefits. Our comprehensive corporate tax compliance services offer Irish limited companies, small and medium-sized enterprises (SMEs), and accountancy practices a more affordable option - no hidden costs or recruitment fees, no risk of staff turnover (and missed deadlines).
Scalability & Flexibility
Our corporate tax services are scalable and flexible. Adding entities to your business? Adding subsidiary companies? We grow with you - no need to employ more tax professionals or engage a new firm in the middle of the year. Pay only for the services you need, when you need them.
Corporate Tax Compliance Assurance
Irish corporation tax rules - Taxes Consolidation Act 1997 obligations, filing deadlines to the Revenue Commissioners, alignment with the CRO annual return, and transfer pricing for larger groups - are intricate and ever-changing. Our corporate tax compliance service takes care of your compliance obligations from start to finish, so you won't miss a deadline or file an incorrect return.
Improved Efficiency & Accuracy
Our outsourced corporate tax returns service is built on structured, technology-enabled processes: automated data collection, cloud-based document storage and real-time review checkpoints - no more stress and panic as deadlines approach and no more mistakes on filing with Revenue.
Data Security
We are fully GDPR-compliant and use encrypted and access-managed cloud systems. Your financials, tax calculations and correspondence with Revenue are safeguarded - in transit, in storage, and in access - with no unknown third parties on the scene.
What We Provide
Corporation Tax Liability Computation
Precise computation of your company's taxable profits, rates of tax (12.5% trading / 25% passive), allowable deductions and corporation tax due, to the standards of the Revenue Commissioners, and ready for CT1 filing.
CT1 Return Preparation & Filing
Full-service preparation and filing of your CT1 return, including all schedules, calculations, and disclosures, via ROS (Revenue Online Service), on time, every time, with a complete audit trail.
Capital Allowances & Deductions
Identification and application of all available capital allowances — plant and machinery, industrial buildings, accelerated allowances for energy-efficient equipment — to ensure your company's taxable income is reduced to its legitimate minimum.
R&D Tax Credit Claims
Preparation & Filing of R&D tax credit claims under Section 766 of the Taxes Consolidation Act, including identification of qualifying expenditure, documentation management, and Revenue correspondence.
Deferred Tax & Financial Reporting
Calculation and reporting of deferred tax balances to include in your statutory financial statements - properly presented in accordance with Irish GAAP (FRS 102) or IFRS, as appropriate to your entity.
Revenue Correspondence & Audit Support
Management of all Revenue Commissioners correspondence, enquiry responses, and tax audit support — so your team never has to navigate a Revenue interaction without expert backup.
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How Our Process Works
4 simple steps to a compliant, stress-free corporation tax return
Onboarding & Tax Position Review
We start by reviewing your company structure, trading activity, accounting period, last year's tax position, and any outstanding Revenue correspondence. We identify risks, opportunities, and relief before we perform a computation.
Secure Integration
Your accounting data, financial statements, and supporting documents are gathered through encrypted, GDPR-compliant cloud platforms. Existing software connections — Xero, QuickBooks, Sage, ROS — are linked without disrupting your live operations.
Expert Assignment
You are assigned a named and experienced corporate tax professional - not an anonymous help desk. Your tax professional is reviewed by a senior tax reviewer at the filing stage for consistency.
Filing, Reporting & Ongoing Advisory
Your CT1 tax return is filed, confirmation provided in writing, and a tax report is issued to your management team. We then remain available year-round for tax planning advice, Revenue correspondence, and ongoing advice as your business needs change.
Start Your Tax Journey Today
Trusted by Irish Companies That Can't Afford a Tax Mistake
Partner with Aone Outsourcing Solutions for corporation tax services that are accurate, Revenue-compliant, and delivered on time — every accounting period, without exception.
No obligation
Free 15-minute discovery call
Expert advice
Why Choose Us?
Discover how Aone gives Irish businesses a real corporation tax advantage
We combine deep knowledge of Irish corporation tax law with structured, technology-driven workflows to deliver corporate tax compliance services that are always accurate, always on time, and always aligned with the latest Revenue guidance — without you having to manage the process.
Save Time Every Filing Period
Irish companies working with Aone reclaim significant time every accounting period — time that goes back into operations, planning, and growth rather than chasing documents and deciphering Revenue notices.
Real-Time Tax Visibility
Know your corporation tax liability before year-end. Our proactive reporting gives you accurate, up-to-date visibility of your estimated tax position throughout the year — no surprises at filing time.
Fast, Reliable Turnaround
CT1 returns prepared and filed on time, every time. Preliminary tax calculations delivered well ahead of Revenue deadlines. No chasing, no last-minute scrambles.
Professional Tax Expertise
320+ trained tax and accounting professionals — assigned to client accounts by industry, entity type, and complexity, not just availability.
24/7 Support
Irish business hours are our primary window, but our team is reachable across time zones. Revenue deadline pressure doesn't follow a 9-to-5 — and neither do we.
The Smarter Way to Manage Corporation Tax in Ireland
See how Aone Outsourcing compares to in-house tax staff, local accountancy firms, and DIY filing — on cost, compliance, and peace of mind.
| Feature Comparison | Aone Outsourcing | In-house tax staff | Local accountancy firm | DIY / ROS filing |
|---|---|---|---|---|
| CT1 filing accuracy | Reviewed & guaranteed | Depends on one person | Varies by firm | High error risk |
| Revenue compliance | Fully managed | Staff-dependent | Reactive only | Self-managed |
| Technology & automation | Cloud-native workflows | Basic tools | Often manual | None |
| Support access | Real-time, 24/7 | Staff hours only | Email/call only | No support |
| Monthly investment | Custom & flexible | €55,000+ p.a. | €3,000–€8,000 p.a. | Filing fees only |
| Scalability | Seamless | Slow hiring cycle | Limited | Cannot scale |
Industries We Serve
Professional Industry
Financial Industry
Construction & Real Estate Industry
Consumer Industry
Transport Industry
Trade Industry
Retail Industry
Healthcare Industry
Hospitality Travel & event
Logistics Industry
Getting Smarter Results with Our Tools & Technology
Our corporation tax services are delivered through the platforms your business already uses — or should be using:
- Full review of your prior year corporation tax position and open Revenue items
- Seamless integration with your existing accounting software and ROS credentials
- Historical tax computation review — identifying missed reliefs or prior year errors
- A dedicated corporate tax professional assigned from day one
- Zero disruption to your filing schedule or Revenue correspondence
- Scalable corporation tax services that grow as your company structure evolves
Switching to Aone Outsourcing Solutions– What to Expect:
Switching your corporation tax services to a new provider feels like a risk — until you do it with a team that has managed hundreds of company transitions across Ireland. Aone Outsourcing Solutions handles every step: prior year review, software integration, opening position reconciliation, and Revenue relationship management. With 24/7 availability and a proven track record across Irish corporation tax, we are consistently recognised as one of the best professional corporation tax services available to Irish businesses.
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