Les Der

Les is a partner in the Canadian Corporate Tax practice and specializes in Canadian resource taxation, tax planning, mergers and acquisitions (domestic and international), and tax accounting matters under IFRS and US GAAP. Les provides tax services to a wide array of private and public companies in the resource, energy, power, and commodity trading industries. As a leader, Les understands the role of innovative solutions to unlock value and increase efficiencies for his clients. With his extensive tax knowledge and access to robust technologies, he has developed automated solutions for high-profile clients in the area of tax accounting and reporting. Les’ practice spans a variety of industries including oil and gas, oil and gas services, mining, power, commodity trading, and downstream and midstream markets. Over the past nine years, Les has served as the lead tax professional for a number of high-profile companies, including Husky, Pembina, Sinopec, PetroChina, Progress, Baytex, and PrairieSky. Les has established strong relationships with some of Calgary’s most prominent organizations and is a highly sought-after advisor in Calgary.