Accountants & Tax Advisors

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Firm member of the Association of Chartered Certified Accountants with a wide range of services from outsourced bookkeeping to compliance

Technology driven

Certified advisors for Xero cloud accounting, along with several other cloud apps. We offer Xero training and implementation too!

Client focused

We focus on building close relationships with our clients. Growing a business is hard. And as turnover grows, good financial management becomes essential

About the services we provide


The preparation of financial statements for clients is our core business and is a requirement for all entities, sole traders, landlords, partnerships or limited companies.


We offer a wide range of services which will minimise tax liabilities, whilst ensuring full compliance with taxation legislation and other requirements.

Company Secretarial

Company law is both complex and detailed and impinges greatly on small businesses. Directors need to ensure at all times, that they meet their obligations under the Companies Acts.

Marie Costello

Marie is a fellow of the Association of Chartered Certified Accountants and affiliated to the Irish Taxation Institute.
She has over 16 years’ experience across a wide range of business sectors.

She has also undertaken various seminars and lectures on a range of financial, taxation and business matters and has several years’ experience teaching in NUIG covering subjects such as financial reporting and taxation.

Our clients say

We have over 15 years of experience with top business professionals

Sarah Petersen

Dan Eire Designs

Marie has a huge wealth of knowledge and really helped me as a sole trader - running a business can be overwhelming but Marie gives great guidance and is an expert in her field.


Inge Jacobsen

Serin Digital

I really needed to find someone I could trust to handle my accounts and tax registration and I'm so delighted to have found Marie! She's been able to advise me on matters of VAT, selling services to the UK and is always great at answering my questions when they arise. Would highly recommend if you're a sole trader!