About Us

We are a Chartered Accounting firm based in Derry, providing accountant services to local businesses and individuals in Derry and Donegal. We have a no-nonsense approach to accounting, making it simple and jargon-free. Our reputation for methodical, efficient and trustworthy accounting means you are in very capable hands. Whether you are a startup or established business you will benefit from our services which include:

Year-end accounts

Managed accounts

Bookkeeping advice

VAT, Corporation Tax and Self-Assessment Tax Returns


Business projections & Cash Flow Forecast

The best time to deal with your account affairs is right now. Our goal is to give you peace of mind through confidential and trustworthy accounting advice. Pick up the phone and speak to us today for a free accounting consultation.

Deborah O’Donnell

deborahDeborah is the Owner and Proprietor of Deborah O’Donnell Chartered Accountants and a Chartered Accountant. She set up the business in February 2013 after taking over the practice where she trained and worked for sixteen years. A mother of one and pregnant at the time, she jumped at the idea of setting up the first female owned and run accountancy firm in Derry.

She is an ambitious woman committed to changing stereotypes about accountancy. “Accountancy should be fun and exciting because numbers do not lie,” she remarks. Driven by the desire to take the pain out of accounting for individuals and businesses of all sizes, Deborah has a vision to deliver “No nonsense accounting that’s jargon-free and delivered in a relaxed environment”.

Inspired by watching her mother go out to work at a local factory and still manage to raise four children. She wants to set a similar example for her daughter. Professional, warm and welcoming in both her personal and business life, she believes in educating her clients. “Making the right business choice from the outset makes the road a little less bumpy further ahead” she adds.

Charlene McMonagle

charleneMarried and a mother of one, Charlene is a Chartered Accountant and a member of the Institute of Chartered Accountants. Charlene and Deborah have known each other since school and when the opportunity arose for Charlene to join Deborah at her new firm, she jumped at it. “I believe in getting things right the first time, a view Deborah and I share”.

With over ten years working in an accountancy practice, she trained with Claremount Accountancy Practise in Derry and brings her wealth of experience to help solve your accountancy problems. An exceptionally hands-on professional Charlene often visits clients at their offices to review bookkeeping practises and offer advice on implementing and improving systems. She adds “Bookkeeping is the backbone of good accounting practice. When the books are in good shape, it makes reconciling the accounts straightforward. Also, it saves the clients money because we do not spend more time getting the books right.”

She is a self-confessed learning addict and describes herself as a “dedicated lifelong learner”. Her latest achievement is a Level 5 Diploma in Management and Leadership.

Sarah McGowan

sarahSarah is the Office Manager & organisation goddess who keeps this place running efficiently. She is the friendly and welcoming face visitors to our offices meet first. Able to answer most client enquiries quickly, Sarah is confident when dealing with accounting matters.

Our PAYE go to girl, Sarah takes on the sole responsibility for PAYE systems management on behalf of our clients. She is assists clients with setting up their PAYE systems too. A woman of many talents she tackles administration tasks and managing Deborah and Charlene’s calendars effortlessly.

Outside of the accounting spheres Sarah runs a successful Irish Dancing school that keeps her busy most evenings and weekends too. A warm and lively girl, she will make you feel at home, and makes a great cuppa too!