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Income taxes (Tables)

12 Months Ended

Dec. 31, 2022

Income taxes [Abstract]

Income tax expense reconciled to loss

The Group’s income tax expense for each year can be reconciled to loss before tax as follows:


		For the Year Ended
		December 31,
In CHF thousands		2022		2021		2020
Loss before income tax		(70,740)		(72,993)		(61,921)
Tax benefit calculated at the domestic rates applicable in the respective countries		(9,616)		(9,930)		(8,441)
(Income not subject to tax)/expenses not deductible for tax purposes		455		(375)		462
Effect of unused tax losses and tax offsets not recognized as deferred tax assets		9,174		10,308		7,979
Effective income tax rate (benefit)/expense		13		3		—

Unrecognized deductible temporary differences, unused tax losses and unused tax credits

The below table details the total unrecognized deductible temporary differences, unused tax losses and unused tax credits:


		As of
		December 31,
In CHF thousands		2022		2021		2020
Unrecognized deductible temporary differences, unused tax losses and unused tax credits
Deductible temporary differences, unused tax losses and unused tax credits for which no deferred tax assets have been recognized are attributable to the following:
Tax losses		264,089		197,152		121,948
Deductible temporary differences related to:
Right-of-use assets and lease liabilities, net		—		—		—
Retirement benefit plan		3,213		7,098		7,464
Total		267,302		204,250		129,412

Tax losses carry forwards and respective expiry dates

The following table details the tax losses carry forwards of the Company and their respective expiry dates:


		As of
		December 31,
In CHF thousands		2022		2021		2020
Tax losses split by expiry date:
December 31, 2024		15,231		15,231		15,231
December 31, 2025		48,894		48,894		48,894
December 31, 2026		—		—		—
December 31, 2027		57,824		57,824		57,824
December 31, 2028		75,204		75,204		—
December 31, 2029		66,936		—		—
Total unrecorded tax loss carryforwards		264,089		197,153		121,949