B2B marketing budgets are stagnating (after accounting for inflation). Achieving growth objectives in 2025 will require B2B marketing executives to increase their ROI through collective strategies, collaboration, cross-functional partnerships, and teamwork. In this budget planning guide for 2025, we share our advice for the most important investment, divestment, and experimentation options B2B marketing executives should consider to navigate their organizations through this challenging environment and drive growth.