Can I deduct a used laptop from the tax?
Depends on. What do you use it for?
If a computer is necessary for the job, you can do that. But you have to be able to show an invoice.
Why not? This is also an operating expense.
Job
Then yes.
You then have to divide it into a private and professional share.
However, if you are an entrepreneur and buy it for your company, it depends on how expensive it is.