In terms of profitability, interior design tends to be more lucrative than landscape design. This is primarily due to the higher cost of materials, labor, and the complexity of projects in interior design. According to the American Society of Landscape Architects (ASLA), the average annual salary for landscape architects was $53,510 in 2020, while interior designers earned an average of $60,570 during the same period, as reported by the U.S. Bureau of Labor Statistics (BLS). Additionally, interior design projects often involve higher-end materials and finishes, which can significantly increase the overall cost and profitability.