This guidance supports local areas, organisations and providers in the UK that have collected, or intend to collect, case studies to estimate how much social and economic cost they can avoid by supporting families experiencing alcohol and drug problems.

It also shows you how to use Public Health England’s (PHE’s) Parents with alcohol and drug problems: Investing in families workbook.

The Excel workbook is made up of 3 parts which are:

• the social cost-benefit tool which contains a template you can use to estimate the costs in your case study and 4 worked examples
• the unit cost database contains the direct, indirect and intangible costs for each cost theme in 2020 to 2021 prices
• annexes contain HM Treasury’s gross domestic product (GDP) deflator, HM Treasury’s discount factors and market forces for reference

This guidance presents a worked-through example of a case study to estimate the cost-benefit of supporting families experiencing problem parental alcohol and drug use.