Similar to your time schedule above, the cost schedule provides a guide to the financial needs of your course over time. A basic cost schedule shows both the total outlay and the timing of outlays over the course. Compare that back to the money you have available, and address any gaps.
This helps you avoid temporary pauses (or worse, complete halts) in your training due to running out of money. These pauses can cost you more, as you may need to spend time and money reviewing and relearning topics you covered previously.