I am starting a new job next week at an insurance company and I will be sent a laptop for work from their IT department. I have a slight concern over my network since it is a work from home job at the moment and I have to use my own personal internet.

Is there anything that their IT department can see on my network if I use their device? My main concern is that I do banking, shopping, other things that require me to put in other personal information, that my activity might be seen. I of course would be using my own devices for this personal use and the device they send me for work. I just don't know what access they would have once I put in my password to connect to my network.