Data from two studies on evaluation budgeting practices are presented. In the first study, estimated budget figures are provided for formative and summative evaluations by 29 state education agency evaluators. In the second study, initial budget figures, final costs, and study characteristics are abstracted from the records of 85 evaluations conducted under the aegis of a regional evaluation contracting firm. A pattern of budget allocations in the two studies was observed in which roughly 61 percent of the total evaluation budget was allocated to personnel, 13 to 14 percent to overhead, and all other budget categories were comprised of 10 percent or less of the total budget. These allocation patterns were found to vary according to certain study characteristics, however. Allocation to personnel was related to the size of the total budget, the use of a pre-post design, and the number of pages in the written report. Allocation to the travel budget category was related to the size of the total budget, the distances traveled, the conduct of a formative evaluation, the provision of evaluation-related services such as training, and the use of archival data or a mixed design. Data processing allocations were also related to funding level and the conduct of a summative evaluation. The total cost of the evaluation was associated with travel requirements, the use of a pre-post design, the provision of services, and content. The conclusion points to pitfalls in evaluation budgeting practice and provides recommendations for future studies. (Author/TE)