Well-executed coaching can drive instructional improvement, teacher retention, and student achievement. However when school systems face intense budget pressures -- as many are now as they grapple with the end of the Elementary and Secondary School Emergency Relief (ESSER) funding and declining enrollment -- instructional coaching is often the first thing to be cut. Sustaining instructional coaching, especially with pressure to cut costs, requires a different approach grounded in understanding and systematically improving coaching's return on investment (ROI). This brief describes a ROI-based approach to sustain high-quality instructional coaching which includes these three steps: (1) Assess the Current Instructional Coaching Model's Practices and Cost; (2) Target Your Strategy to Maximize Your System's Strengths--While Responding to Budget Realities; and (3) Focus on Continuous Improvement and Adjustments that Increase Impact and Maintain Sustainable Cost Structures.