There’s a lot of if’s involved with the whole home office and taxes. You can deduct part of your rent, utilities if you have a dedicated office , a room used for nothing else. Example, I have a six room house and I use a bedroom for nothing but my work, I can deduct 1/6th of the cost of your home bills. As far as headphones or computers, you can deduct or amortize the full value, but you have to have receipts and have a good story about how they are used for nothing else. As far as cellphones, your provider keeps track of every call and text. Verizon has it as a downloadable PDF. IRS Form 2106 is what you want to check out.
All the best
JD
All the best
JD