Budget professional development.
Setting a development budget as a percentage of salary keeps it proportionate and makes it a standing commitment rather than an occasional splurge. Two to five percent is a common band. Subtracting any employer allowance shows what you actually need to find yourself, and dividing by the number of planned activities gives a per-course ceiling that stops one expensive conference consuming the entire year.
Development budget allocation
Total budget = salary x share; own contribution = max(0, total - employer allowance); per course = total / courses planned
Two to five percent is a widely used band for self-funded development, and it is roughly what employers spend per head on training when they do it properly. Early-career professionals often justify more; the return is highest then.
Always, and before the end of the budget year — unspent allowances rarely roll over. Use employer funding for expensive formal training and your own budget for smaller items that are harder to get approved.
Concentrate it. One substantial course that changes what you can do beats five cheap ones that each add a little. The per-course figure is a ceiling for planning, not a target to spread evenly.