‘expenditure share’ means a percentage of total household final monetary consumption expenditure, as specified in the Annex;

‘sub-index weight’ means the weight for any category of the European classification of individual consumption according to purpose (ECOICOP), as set out in Annex I to Regulation (EU) 2016/792, included in the HICP;

‘target universe’ of the HICP means all transactions included in household final monetary consumption expenditure;

‘product-offer’ means a product specified by its characteristics, the timing and place of purchase and the terms of supply, and for which a price is observed;

‘homogeneous product’ means a set of product-offers among which there are no significant quality differences and for which an average price is calculated;

‘individual product’ means a product-offer or a homogeneous product;

‘target sample’ means a set of individual products that pertain to transactions from the target universe and for which price data are to be used for HICP compilation;

‘quality difference’ means a difference between the characteristics, timing, place of purchase or terms of supply of two individual products, where this is relevant from the consumer’s perspective;

‘replacement product’ means an individual product that replaces another individual product in the target sample;

‘quality adjustment’ means a procedure of increasing or decreasing the observed price of a replacement product or the replaced product by the value of the quality difference between them;

‘observed price’ means the consumer price of an individual product, as used by the Member State for the HICP compilation;

‘estimated price’ means a price based on an appropriate estimation procedure;

‘elementary aggregate’ means the smallest aggregate used in a Laspeyres-type index;

‘elementary price index’ means an index for an elementary aggregate or an index for a stratum within an elementary aggregate;

‘transitivity’ means the property whereby an index that compares periods (a) and (b) indirectly through period (c) is identical to one that compares periods (a) and (b) directly;

‘time reversibility’ means the property whereby the index between periods (a) and (b) is equal to the inverse of the same index between periods (b) and (a);

‘reimbursement’ means a partial or complete payment by government or non-profit institutions serving households of approved purchases by households of specified products, as defined in paragraphs 4.108-4.110 of Annex A to Regulation (EU) No 549/2013 of the European Parliament and of the Council ( 1 ) (ESA 2010);

‘inducement’ means a change, often temporary, in the characteristics of an individual product by increasing the quantity of the product, attaching another individual product free of charge or offering other benefits to the consumer;

‘actual premiums’ means the amounts paid for a specific insurance policy to obtain insurance cover over a stated time period;

‘implicit service charge’ means the output of insurance companies, as defined in paragraph 16.51 of Annex A to ESA 2010;

‘non-life insurance claims’ means claims as defined in paragraph 4.114 of Annex A to ESA 2010;

‘seasonal product’ means an individual product that is available for purchase or purchased in significant amounts only part of a year in a recurring pattern. In any given month, the product is considered to be either in-season or out-of-season. The in-season period may vary from one year to another;

‘typical price’ means an estimated price for a seasonal product that is not exceptional such as an end-of-season sales price;

‘seasonal imputation method’ means a treatment whereby prices of out-of-season seasonal products are estimated using counter-seasonal or all-seasonal estimation;

‘counter-seasonal estimation’ means a procedure to obtain an estimated price for a seasonal product so that:

‘all-seasonal estimation’ means a procedure to obtain an estimated price for a seasonal product so that:

‘seasonal weights method’ means a treatment of seasonal products in which weights for out-of-season seasonal products are zero or set to zero;

‘tariff’ means a list of prices and conditions for a product that is differentiated according to the quantities purchased, the timing of consumption or the characteristics of purchasers;

‘revision’ means a change in the indices or weights published by the Commission (Eurostat). A change between the flash estimate and the HICP for the same reference month shall not be considered a revision;

‘provisional data’ means indices or weights that a Member State is expected to finalise in a later month;

‘general government sector’ means central government, state government, local government and social security funds, as defined in paragraphs 2.113-2.117 of Annex A to ESA 2010;

‘taxes on products’ means taxes that are payable per unit of a given good or service produced or transacted, as defined in paragraphs 4.16-4.20 of Annex A to ESA 2010;

‘individual taxes in scope for the HICP-CT’ means individual taxes on products that relate to household consumption and are included in the following categories, defined in Table 9 (‘Detailed tax and social contribution receipts by type of tax or social contribution and receiving sub-sector including the list of taxes and social contributions according to national classification’) in Annex B to ESA 2010: