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Significant commitments and contingencies | 12 Months Ended
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Dec. 31, 2019
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Significant commitments and contingencies |
29. | Significant commitments and contingencies
Operating leases commitments Prior to 2019 ChipMOS Taiwan entered into several operating lease contracts for land. These renewable operating leases will expire by 2032 and 2034. ChipMOS USA entered into several operating lease contracts for office space. These renewable operating leases will expire by 2019 and 2020. Future minimum lease obligation payable under those leases are as follows:
|  | December 31, 2018 |
|  | NT$000 |
Within 1 year |  |  | 68,631 |
1 to 5 years |  |  | 140,137 |
Over 5 years |  |  | 111,446 |
|  |  | 320,214 |
Capital commitments Capital expenditures that are contracted for, but not provided for are as follows:
|  | December 31, 2018 |  |  | December 31, 2019 |
|  | NT$000 |  |  | NT$000 |
Property, plant and equipment |  |  | 2,508,797 |  |  |  | 1,640,712 |
Other commitments A letter of guarantee was issued by the Bank of Taiwan to the Customs Administration of the Ministry of Finance for making payment of customs-duty deposits when importing. As of December 31, 2018 and 2019, the amounts of NT$97,500 thousand and NT$100,800 thousand, respectively, were guaranteed by Bank of Taiwan.

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