Page 298 - TSMC 2020 Annual Report

All of the Company’s accounts receivable classified as at FVTOCI were not past due. Movements of the loss allowance for accounts receivable
Balance, beginning of year Provision (Reversal)
Balance, end of year
Years Ended December 31 2020 2019
$ 319,045 $ 7,132 (75,335) 311,913
$ 243,710 $ 319,045
For the years ended December 31, 2020 and 2019, the changes in loss allowance were mainly due to the variations in the balance of accounts receivable of different risk levels.
10. INVENTORIES
Finished goods
Work in process
Raw materials
Supplies and spare parts
December 31, 2020
$ 21,338,980 88,575,222 13,758,417 6,625,417
$ 130,298,036
December 31, 2019
$ 8,533,179 49,268,466 15,046,116 3,416,090
$
76,263,851
Write-down of inventories to net realizable value and reversal of write-down of inventories resulting from the increase in net realizable value were included in the cost of revenue, as illustrated below:
Years Ended December 31 2020 2019
Inventory losses (reversal of write-down of inventories) $ 3,642,829 $ (2,071,888)
The aforementioned reversal of write-down of inventories for the year ended December 31, 2019 excluded wafer contamination losses. Please refer to related losses in Note 33.
11. INVESTMENTSACCOUNTEDFORUSINGEQUITYMETHOD
Investments accounted for using the equity method consisted of the following:
December 31, 2020
Subsidiaries $ 545,784,630 Associates 18,812,878
$ 564,597,508
December 31, 2019
$ 539,843,621 18,660,268
$ 558,503,889
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