If your domestic help is self-employed, you can remunerate the service provided by means of an invoice and do not have to register your domestic help.
In order to issue invoices, the cleaner must be visible on the market under her own name and on her own account and must want to increase her customer base through regular acquisition activities. Regular work for several regular customers, on the other hand, is not sufficient for self-employment. If you are unsure whether your domestic help is actually self-employed, ask your domestic help to show you the confirmation from the AHV for self-employment.