Pettinelli Mastroluisi LLP is an accounting firm with over 30 years’ experience and is the business partner of choice for privately owned corporations, their shareholders and non-profit organizations throughout Hamilton and surrounding area. Founded in 1985, Pettinelli Mastroluisi LLP has grown to be one of Hamilton`s largest independent local firms. We have built our reputation by offering first-class accounting, advisory, taxation and valuation/litigation support services - ensuring everything we do contributes to the financial success of our clients.