Welcome to Quantus Advisory

Quantus Advisory is a Dublin based firm of Accountants who have been advising clients and their businesses for over 30 years

The firm prides itself on offering clients, both small and medium, from all sectors of business. Our clients are nationwide. The firm has a reputation as specialists in the hotel, tourism and leisure sector and is known as a market leader in providing advice to the Licensed Trade. It has unrivalled expertise and experience in this area, and acts for many landmark premises in Dublin and countrywide.

The firm was previously known as L'Estrange & Company until it was rebranded as Quantus Advisory.


It is registered with the Association of Chartered Certified Accountants.

Our offices are conveniently located at College House, 71-73 Rock Road, Blackrock, Co Dublin. We are available outside office hours.

Our Services

Our firm provides a number of various services to all our clients. 

Thinking Of A Change?

Your Accountant plays a vital role in advising you and your business.  The service of any Accountant can vary enormously and there will be occasions when a business owner will have to consider whether a change of Accountant

Starting your own Business

It is essential to get the right advice in advance of setting up a new business. If mistakes are made, it can be difficult, or sometimes impossible to rectify these later. 


All business owners have a legal responsibility to ensure that they keep proper books and records. Many owners do not have either the time or the knowledge to ensure that this important function is maintained

Company Secretarial

Compliance with Company Law legislation is becoming increasingly onerous, and it is an area that company directors rely heavily on their advisors to ensure that they remain compliant. 


Are you ready for PAYE Modernisation?

Employment Law and payroll services have become increasingly difficult, and calculation of payroll deductions is becoming increasingly complex. The arrival of PAYE Modernisation will make this even more time consuming and difficult.


Compliance with Company Law legislation is becoming increasingly onerous, and it is an area that company directors rely heavily on their advisors to ensure that they remain compliant. 

Licensed Trade

Quantus Advisory are specialists in the Licensed Trade and have been providing advice to the trade for over thirty years. We offer a “one-stop shop” for anyone seeking entry into the business

Audit & Accountancy

We are registered with the Institute of Chartered Certified Accountants in Ireland to carry out Audits of Companies. Some Companies may be able to avail of Audit Exemption

Wealth Managment & Retirement Planning

It is quite true that “money makes money” and once the hard work of initially generating a profit has been done, many clients seek our opinion on how and where they can invest their profits. 

Business News

70% of consumers considering buying an electric vehicle

70% of consumers in Ireland are considering an electric vehicle as their next car purchase, a new survey by DoneDeal shows. The figures show that ...
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RTB pausing and refunding late fees to landlords

The Residential Tenancies Board is applying a temporary pause on the charging of late fees in recognition of “the genuine difficulties” experienced by landlords who ...
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Rent tax credit adds to volume of calls to Revenue

Revenue is experiencing a higher volume of calls due to tenants enquiring about the new rent tax credit. The measure, introduced in Budget 2023, allows ...
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Practice News

Build long-term customer relationships: improve your financial stability

Quantus Advisory know that building long-term relationships with your customers makes good sense for your customer experience. But good relationships are also a key factor ...
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Unlock the Secrets of Success by Measuring Your Business’s Performance

As a business owner, Quantus Advisory understand that it's important to regularly evaluate the success of your company in order to make informed decisions about ...
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Budgeting for Business Success

Quantus Advisory know that as a business owner, you wear many hats - CEO, salesperson, and accountant, to name a few. With so many responsibilities, ...
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