Note: We are not currently taking on new clients

Certified Chartered Accountants & Chartered Tax Advisors

Do you need professional advice?

We can be contacted to request a one hour Zoom consultation covering taxation and business advisory. A summary report of the key facts and findings would be issued after the meeting.

The charge for this service is €250 and is payable in advance


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

Technology driven

We are experts as working remote. Certified advisors for Xero cloud accounting, along with QuickBooks, Surf and Sage. We offer 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 FCCA CTA

Marie is a fellow of the Association of Chartered Certified Accountants and member of the Irish Taxation Institute.
She has nearly twenty 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 nearly 20 years of experience with top business professionals

Dr. Lorraine D'Arcy

Darcy Clinic Limited

Marie has a huge wealth of taxation knowledge and really held our hand through the early stages of start-up. She manages the company on a monthly basis as 'financial controller' and has removed all of the stress of compliance and deadlines. We always know how the company has performed each month and what targets we should be planning towards. Highly recommended service.


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 trading abroad and need VAT advice!