In general, SAMHSA allots for the block grants programs by:
Setting aside a percentage of the appropriated amount to cover its costs for data collection, technical assistance, and program evaluation. Calculating the baseline allotments based on certain factors, adjusting the allotments, if necessary, so that the statutory minimum allotment constraints are satisfied
For the SUBG, SAMHSA bases its state baseline allotment calculations on the relative shares of the Population-at-Risk, Cost-of-Services, and Fiscal Capacity Indexes. It bases territory allotments solely on the relative share of the population.
For the MHBG, SAMHSA uses similar factors in state and territory allotment calculations, except that the Weighted Population-at-Risk Index replaces the Population-at-Risk Index. In addition, different statutory minimum allotments apply.