Deferred tax assets and liabilities

in CHF 000	2020	2019
Employee benefit obligations	4 287	7 202
Intangible assets	–	42
Capitalised tax loss carryforward	13 680	17 587
Provisions	260	403
Other balance sheet items	197	365
Total deferred tax assets, gross	18 424	25 599
Trade accounts receivable	(994)	(1 355)
Property, plant and equipment	(16 801)	(17 660)
Financial assets	(226)	(411)
Employee benefit plan assets	(21 716)	(24 247)
Intangible assets	(112 322)	(131 094)
Provisions	(2 714)	(2 714)
Other balance sheet items	(326)	(648)
Total deferred tax liabilities, gross	(155 100)	(178 129)
Total deferred tax assets, net	(136 676)	(152 530)
of which deferred tax assets stated in the consolidated balance sheet	8 540	7 805
of which deferred tax liabilities stated in the consolidated balance sheet	(145 216)	(160 335)

Deferred tax assets and liabilities are offset within the consolidated companies if they have the right to do so and if they relate to taxes levied by the same tax authority. Such offsetting amounted to CHF 9.9 million in 2020 (previous year: CHF 17.8 million). The change in deferred taxes is shown in the following table:

in CHF 000	2020	2019
As of 1 January	(152 530)	(164 000)
Change in group of consolidated companies	2 856	(5 221)
Deferred tax income	17 306	29 772
Taxes on other comprehensive income	(4 278)	(13 166)
Currency translation differences	(30)	85
As of 31 December	(136 676)	(152 530)

Tax loss carryforwards

in CHF 000	2020	2019
Recognised tax loss carryforwards	13 680	17 587
Weighted average income tax rate	19.4%	18.8%
Corresponding to effective tax loss carryforwards	(70 426)	(93 675)
Past due 1 year	(471)	–
Past due 2 to 5 years	(19 889)	(41 817)
Past due after more than 5 years	(50 065)	(51 858)

Whether or not the capitalised tax loss carryforwards can be realised depends on the taxable profits generated in the future. Detailed analyses of anticipated future profits over a period of several years, which also take into account known changes to existing tax laws, form the basis for the assessment of the likelihood of their realisation. The companies affected fulfil the prerequisites for realisation based on their current and expected financial performance. As of 31 December 2020, (net) deferred tax assets of CHF 5.6 million (previous year: deferred tax assets of CHF 1.6 million) had been capitalised for Group subsidiaries that suffered losses in this or the previous year.

in CHF 000	2020	2019
Unrecognised tax loss carryforwards	(92 356)	(117 596)
Past due 1 year	(3 906)	–
Past due 2 to 5 years	(27 866)	(49 056)
Past due after more than 5 years	(60 584)	(68 540)