The Tax Institute annual awards recognise tax professionals across all levels of experience for their professionalism, leadership, high ethical standards and commitment to excellence.
Mr Aggarwal competed against astute tax accountants and lawyers Australia-wide to reach the top three, with the category won by Argyle Lawyers� Peter Bobbin (NSW).
Mr Aggarwal said the recognition of making the finals was both �overwhelming� and �exciting�.
�This is one of the prestigious awards for the tax professionals in Australia,� he said.
�It�s a very wonderful feeling because it�s recognition of your past achievements and the motivation to excel further in your career.
�The nominations go to the Tax Institute from all across the country and that goes to the judging panel and they look at your submissions and all your credentials throughout your career and what you�ve achieved in the tax profession.
�It�s for your excellence in the tax profession and what you�ve contributed to the profession and how you have presented clients over that period of time.
�You have to submit some of the case studies of particular technical issues you�ve handled for the clients and the testimonials from the clients as well.�
Mr Aggarwal, who emigrated from India his family in 2008, said he loved helping small to medium businesses achieve their goals.
�I�m passionate about consulting and helping the small businesses, setting up strategic goals for them and helping them grow their business and achieving the best tax outcome for them,� he said.
He said Fortuna had been running as a separate brand for about two years and had grown at a fast pace in that time.
�We now have a couple of offices, one mainly in Joondalup and the other in West Perth,� he said.
Tax Institute chief executive Noel Rowland said it was difficult for the judges to select just four winners from the strong field of entrants this year, which he said was a testament to the profession as a whole.
The 2016 Tax Adviser of the Year Award nominations will open in September.