Chartered accountants in Dún Laoghaire
Our office is at Marina House on Clarence Street, where the practice has looked after Irish businesses for more than 100 years. Accounts, tax, VAT, payroll and audit for companies, sole traders and contractors in Dún Laoghaire and right across south Dublin.
Visit the office
- Address
- Finlay Mulligan & Co.
Marina House, Clarence Street
Dún Laoghaire, Co. Dublin A96 AX76 - Phone
- 01 663 8700
- Opening hours
- Monday to Friday, 9am to 5:30pm
Who you will meet
Ian Brennan
Managing Partner
Ian leads the practice as Managing Partner and works directly with clients as their accountant, many of them over a number of years.
Ian on LinkedInAlan TurnerFCCA
Fellow Chartered Certified Accountant
Alan handles the accounting, payroll, tax and VAT returns for clients, including EU VAT filings for businesses that trade across borders.
What we do for Dún Laoghaire businesses
Every service is available in person at the office or fully online, at a fixed fee agreed before we start.
Areas we cover nearby
Dún Laoghaire · Monkstown · Sandycove · Glasthule · Dalkey · Killiney · Glenageary · Sallynoggin · Blackrock · Deansgrange · Cabinteely · Foxrock · Stillorgan
Further afield, see accountants in Dublin or all the places we work.
What our clients say
5.0 from 4 reviews on Google“FMCo have been a great help to our renewable energy business not just as accountants but as advisors on our initial corporate structure and how to structure our business in the most tax efficient way. They also helped to get us set up with our online accounting software which is seamless and makes it easy for us to keep on top of our accounts throughout the year. Very professional and friendly service and always reasonable on price.”
Conor M.
Google review, 2020
“FMCO is a pleasure to deal with. Alan and the team have been doing our accounting + Payroll + Taxes and VAT submission for 2+ years now. Absolute pleasure to deal with them. Highly recommended.”
Maklu Initiative
Google review, 2024
“I needed a quick advice about my sole trader business and Hugh was very fast and helpful. I would recommend it 100%!!”
Núria S.
Google review, 2025
“Professional, reliable, and always available to provide excellent advice. Highly recommended”
Joe D.
Google review, 2020
Common questions
- Where is your office in Dún Laoghaire?
- Marina House, Clarence Street, Dún Laoghaire, Co. Dublin A96 AX76. The office is open Monday to Friday, 9am to 5:30pm.
- Can I meet you in person?
- Yes. Clients in and around Dún Laoghaire are welcome to meet us at the office. Call ahead on 01 663 8700 so the right person is in.
- Do you only work with businesses in Dún Laoghaire?
- No. Dún Laoghaire is our only office, but most of our clients work with us online from across Ireland. The service is the same either way.
- Are you chartered accountants?
- Yes. Finlay Mulligan & Co. are chartered accountants and registered auditors, regulated by Chartered Accountants Ireland, and the practice has served Irish businesses for more than 100 years.
Talk to us
Tell us about your business and we will reply within four business hours.