Aug 5, 2016 On 5 Aug 2016, the Thailand government amended the depreciation tax rate This Insight updates the tax depreciation rates allowable under Thai tax law. Businesses that have fixed assets excluding land of not more than 200 million rates cannot be up lifted to the maximum rates under the tax law. Feb 17, 2017 Accordingly, underlying asset values are not adjusted for capitalized Improvement assets and accumulated depreciation, however, are Apr 19, 2000 Annexe – I - Rates As Precribed In The Electricity (Supply) Act, 1948 . The tariff for the sale of electricity by a Generating Company1 to the Board shall be determined in depreciation is allowed on freehold land while leasehold land is depreciated based on the tenure of the improvements to the asset.