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Modelling consumption patterns is of interest for both theoretical and policy reasons. This paper presents a methodology for modelling consumption patterns combining a theory-based with a data-based approach and it continues with an application to Greek data. Tile adopted AIDS-ECM quantitative methodology aims to estimate tile expected trends ill consumption patterns ill Greece following an increase in available income over tile 2001–2010 period. Three scenarios are examined: the first scenario considers the EU projections for private consumption expenditure, 3% per annum, the second scenario assumes a higher growth of 5% per annum and tile third scenario a 1% increase. Tile results of tile first stage expenditure aggregation show a decrease ill tile budget share for the food group ill all scenarios under consideration while tile opposite is true for ‘transportation and communication’ and ‘others’. Finally, the second stage expenditure aggregation estimates show an increase ill tile budget share for meat, fruits and vegetables and oils and fats, while the opposite is true for bread and cereals and other food. [ABSTRACT FROM AUTHOR]