20 Inventories

In CHF million	31.12.2015	31.12.2014
Raw material and supplies	5	6
Customer premises equipment and merchandise	170	141
Advance payments made	3	5
Finished and semi-finished goods	–	5
Total inventories, gross	178	157
Allowances on inventories	(4)	(8)
Total inventories, net	174	149

In 2015, inventory-related costs amounting to CHF 1,143 million (prior year: CHF 1,145 million) were recorded under the cost of goods and services purchased.