Re: Hiring employees
I employed a chap for a year. He had a C permit so no Quellensteuer. I just informed the SVA of his salary, and my relevant insurers and company pension provider. I then constructed a spreadsheet to keep track of his pay and deductions using the published figures. At year end, I filled in a Lohnausweiss.
Even with Quellensteuer it's not rocket science - You determine the figure from the tables and send the relevant amount to the tax authorities.