The Consumer Confidence Indicator (CCI) is DG ECFIN's monthly gauge of EU household optimism. It belongs to the Joint Harmonised EU Programme of Business and Consumer Surveys (BCS), run with national institutes through harmonised questionnaires and a common timetable. Each month more than 40000 consumers take part across the EU, with effective samples of 34000 at EU level and 21000 at euro-area level. Non-response lowers nominal samples, while effective samples count completed interviews. Country results aggregate by private final consumption shares. It tracks opinions on the next 12 months only, not spending, retail sales, business mood or the broad Economic Sentiment Indicator (ESI). It is not the US Conference Board index, which covers US households with a different method.