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Uniform Wage Notification Procedure (ELM)
With a swissdec certified payroll software, withholding tax data can be transmitted electronically to all Cantons in an uniform procedure.
You will need your customer number ("Arbeitgebernummer, SSL-Nummer, Kontrollnummer"), which is unique for every Canton. Withholding tax declarations will then be delivered automatically to the Canton of residence of your employees.
Should you need more information or have any problems with the payroll software, please contact your software provider.