- 52 - 30. NET DERIVATIVE GAIN (LOSS) Unit : Million Baht Consolidated financial statements Separate financial statements For the years ended December 31, 2021 2020 2021 2020 Realised loss on financial derivative contracts (92) (380) (92) (380) Unrealised loss on financial derivative contracts (210) (38) (210) (38) Realised gain (loss) on commodity derivative contracts (1,954) 1,734 (1,954) 1,734 Unrealised gain (loss) on commodity derivative contracts 313 (961) 313 (961) Total net derivative gain (loss) (1,943) 355 (1,943) 355 Gain (loss) on commodity derivative contracts are due to the fluctuation in price of crude oil and petroleum products and the contract price of commodity derivatives which is nature of normal business. 31. ADMINISTRATIVE EXPENSES Unit : Million Baht Consolidated financial statements Separate financial statements For the years ended December 31, 2021 2020 2021 2020 Staff costs 3,724 3,627 3,679 3,587 Consultant fees 124 328 120 324 Depreciation 289 278 186 169 Rental 51 119 51 243 Advertising 28 23 29 22 Bad debts and doubtful accounts (reversal) 1 (1) 2 - Directors’ remuneration 27 27 25 24 Others 1,429 1,317 1,486 1,235 Total administrative expenses 5,673 5,718 5,578 5,604 32. SIGNIFICANT EXPENSES BY NATURE Unit : Million Baht Consolidated financial statements Separate financial statements For the years ended December 31, 2021 2020 2021 2020 Changes of finished goods 4,718 (1,734) 4,671 (1,746) Cost of raw materials used 317,992 128,828 317,332 128,667 Staff costs 9,285 9,088 9,143 8,956 Depreciation and amortisation 8,587 8,952 8 8,605 8,855 Directors’ and managements’ remuneration 70 81 68 78 354 IRPC PUBLIC COMPANY LIMITED 56-1 ONE REPORT 2021
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