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CanadaProfessional Self Assessment Tax Services in Ireland
Aone Outsourcing Solutions delivers professional self-assessment tax return services to sole traders, self-employed professionals, company directors, landlords, and high earners across Ireland. Whether you're filing your first Form 11 or managing complex multi-source income, we ensure your self-assessment obligations are met accurately, on time, and fully aligned with Irish Revenue Commissioners requirements — so you can focus on your work, not your tax risk.
- ✨ +5,000 Tax Returns Filed
- ✨ +€1M Saved Across Client Portfolios
What's Include
- ✔ Form 11 preparation & filing via ROS
- ✔ Income tax & USC liability calculation
- ✔ PRSI contributions & surcharge review
- ✔ Expenses, reliefs & tax credit claims
- ✔ Year-round tax advisory support
Self Assessment Tax Return Services for Irish Sole Traders, Directors & the Self-Employed
Are you looking for reliable, expert self-assessment tax return services in Ireland? Aone Outsourcing Solutions provides professional self-assessment and self-employment tax return services to ensure you fully comply with Revenue Commissioners requirements — whether you're a freelancer filing your first return, a sole trader managing growing income, or a company director with multiple income sources requiring a complete Irish self-assessment tax return.
Our specialists take care of everything: they calculate your income tax, USC, and PRSI liability, prepare and file your Form 11 return, claim all allowable expenses and tax credits, apply any relevant reliefs, and handle all Revenue correspondence on your behalf. We provide services to self-employed people across Ireland, including Dublin, Cork, Limerick, and Galway, using secure cloud-based systems such as Xero, QuickBooks, Sage, and ROS (Revenue Online Service). We make sure that your self-assessment tax returns are true, timely and prepared should Revenue ever raise eyebrows.
Our revenue-aligned workflow and multi-level review process make us a true extension of your personal finance department. With a full-time tax team ensuring ACA/CPA-compliant documentation, you can dedicate all your time to earning, and we handle all the details of your self-assessment tax position.
The Benefits of Outsourced Self-Assessment Tax Services in Ireland
Self Assessment Expertise
The management of self-employment tax in Ireland requires specialist knowledge of income tax bands, USC rates, PRSI classes, allowable expenses and filing deadlines, which, in most cases, the vast majority of self-employed people simply do not have time to learn. Our Ireland self-assessment compliance services offer you access to qualified tax professionals who know the Revenue regulations, Form 11 requirements, and the entire scope of the Irish self-assessment - without the expense of hiring a specialist.
Cost-Saving Benefits
Dedicating hours annually to document gathering, Revenue guidance deciphering and trying to complete your self-assessment tax return form yourself is a cost that costs you much more in lost productive time than a fee that a professional service would charge. Our full-service self-assessment tax return services provide a cost-effective, fully managed solution for Irish sole traders, freelancers, and company directors, with no hidden charges, missed deadlines, or underpaid tax penalties.
Scalability & Flexibility
Your sources of income could vary each year: the addition of rental income, the acquisition of a directorship, or the increased activity of the self-employed. Our self-assessment services are scalable to your situation. We change your return every year to reflect new sources of income, new reliefs, and new reporting requirements, without you having to employ a new accountant or to start afresh.
Full Compliance Assurance
The Irish self-assessment rules - Form 11 filing obligation, preliminary tax payable, surcharge exposure on late filing, and Revenue Commissioners deadlines - are extensive and unforgiving in a non-compliant manner. We handle your compliance by offering our self-assessment tax report service to manage it from beginning to end, so you will never miss a deadline or file an incorrect tax return.
Improved Efficiency & Accuracy
Our outsourced self-assessment service is based on structured, technology-enabled processes: automated data collection on incomes, cloud-based data storage, and real-time review checkpoints - no more stress as the October deadline approaches, no more errors on your Form 11 filing with Revenue.
Data Security
We are fully GDPR-compliant and use encrypted and access-controlled cloud systems. Your income data, expense data, tax data, and Revenue correspondence are secured - during transit, during storage and during access - with no unknown third parties being involved.
What We Provide
Income Tax & Liability Computation
Accurate calculation of your taxable income, including your self-employment, PAYE, rental, investment and foreign income and with the correct tax bands, USC rates and PRSI class to determine your exact liability before filing.
Form 11 Self Assessment Tax Return Preparation & Filing
Full-service preparation and filing of your Form 11 self-assessment tax return via ROS (Revenue Online Service), on time, every time, with a complete audit trail and written confirmation of submission
Allowable Expenses & Deductions
Recognition and use of all allowable business expenses of self-employed individuals and sole traders - travel, home office, professional subscriptions, capital acquisitions, etc. - to ensure that your taxable income is reduced to its legitimate minimum before you file.
Tax Credits & Reliefs
Claim all credits and reliefs available to you: earned income credit, pension contribution relief, medical expenses, flat-rate expenses, Employment Investment Incentive (EII) relief, and start-up capital incentive — maximising your refund or minimising your liability with every return.
Preliminary Tax Calculation & Payment Planning
Calculation of your preliminary tax obligation and a clear payment plan to avoid interest charges from Revenue — ensuring you always meet the November deadline without overpaying or underpaying by more than the permitted threshold.
Revenue Correspondence & Enquiry Support
Management of all Revenue Commissioners correspondence, surcharge challenges, and enquiry responses — so you never have to navigate a Revenue interaction without expert support behind you.
How Our Process Works?
4 Simple Steps to Financial Clarity
Initial Consultation
We start by learning about your tax scenario, sources of income, business form, previous filing history, and CRA compliance needs, and then develop an entirely individualized tax return solution tailored to your unique needs and objectives.
Document Collection
We also assist you by submitting all required documents, such as T4 and T5 slips, business income and expenses, investment statements, rental income information, and previous-year returns, and by helping you through the whole process so that it is easy, understandable, and straightforward
Expert Preparation & Review
Your return is prepared by a special tax professional with the highest accuracy, taking into account all credits and deductions. Each return goes through a multi-level compliance check and is sent to the CRA - no errors, total regulatory compliance.
Filing, Tracking & Ongoing Support.
Your filing is submitted safely and on time to the CRA. We monitor your refunds, handle all CRA mail, and are on hand year-round to answer any tax questions, provide planning services, or address any legislation changes that could affect your requirements.
Start Your Tax Journey Today
Trusted by Irish Individuals and Businesses That Can't Afford a Tax Mistake
Partner with Aone Outsourcing Solutions for self-assessment tax return services that are accurate, Revenue-compliant, and delivered on time — every tax year, without exception.
No obligation
Free 15-minute
discovery call
Expert advice
Why Choose Us?
Discover how Aone gives the self-employed, sole traders, and directors a real advantage in self-assessment.
We combine deep knowledge of Irish self-assessment tax law with structured, technology-driven workflows to deliver self-assessment tax return services that are always accurate, always on time, and always aligned with the latest Revenue guidance — without you having to manage the process or decode complicated Revenue notices yourself.
Save Time Every Filing Season
Irish self-employed individuals working with Aone reclaim significant time every tax year — time that goes back into running their business, earning income, and planning rather than chasing receipts and deciphering Form 11 instructions.
Real-Time Tax Visibility
Know your income tax liability before year-end. Our proactive reporting gives you an accurate, up-to-date view of your estimated self-assessment position throughout the year — no surprises when the Revenue deadline arrives.
Fast, Reliable Turnaround
Form 11 returns are prepared and filed on time, every time. Preliminary tax calculations delivered well ahead of Revenue deadlines: no chasing, no last-minute scrambles, no surcharge exposure.
Professional Tax Expertise
320+ trained tax and accounting professionals — assigned to client accounts by income type, entity structure, 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 does not follow a 9-to-5 — and neither do we.
The Smarter Way to Manage Self-Assessment Tax in Ireland
See how Aone Outsourcing compares to doing it yourself, using local accountancy firms, and filing via ROS alone — on cost, compliance, and peace of mind.
| Feature Comparison | Aone Outsourcing | Local accountancy firm | DIY / ROS filing | Tax software only |
|---|---|---|---|---|
| Form 11 accuracy | Reviewed & guaranteed | Varies by firm | High error risk | User-dependent |
| Revenue compliance | Fully managed | Reactive only | Self-managed | Self-managed |
| Support access | Real-time, 24/7 | Email/call only | No support | No support |
| Monthly investment | Real-time, 24/7 | Email/call only | No support | No support |
| Scalability | Custom & flexible | €1,500–€4,000 p.a. | Filing fees only | Software cost only |
Industries We Serve
Professional Industry
Financial Industry
Construction & Real Estate Industry
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Consumer Industry
Transport Industry
Trade Industry
Retail Industry
Healthcare Industry
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Hospitality Travel & event
Logistics Industry
Getting Smarter Results with Our Tools & Technology
Our self-assessment tax return services are delivered through the platforms your business already uses — or should be using:
- Full review of your prior year self-assessment position and open Revenue items
- Seamless integration with your existing accounting software and ROS credentials
- Historical return review — identifying missed expenses, credits, or reliefs
- A dedicated self-assessment tax professional assigned from day one
- Zero disruption to your filing schedule or Revenue correspondence
- Scalable self-assessment services that adapt as your income profile evolves
Switching to Aone Outsourcing Solutions — What to Expect
Switching your self-assessment tax filing to a new provider feels like a risk — until you do it with a team that has managed hundreds of individual tax 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 self-assessment and self-employment tax returns, we are consistently recognised as one of the best professional self-assessment tax services available to Irish individuals and businesses
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