Can I write off a second monitor bought used on Marketplace?

Yes — a used second monitor bought on Marketplace can often be written off if it’s used for a real business or self-employment purpose and you can document the purchase.

A few important limits:

• Business use matters: the expense should be ordinary and necessary for your work.
• Personal use must be separated: if you also use it personally, you generally deduct only the business-use portion.
• Keep proof: save the listing, messages, payment record, and ideally a bill of sale or receipt, especially if you paid cash.
• How you claim it can vary: depending on your tax situation, the monitor may be expensed or treated as a depreciable asset, so the correct treatment depends on your filing situation and the tax rules that apply.

If you’re a W-2 employee, deductibility may be different under current tax law, so verify that for your specific situation before assuming it’s deductible.

Best practice: keep the purchase record, note the business purpose, and check the current IRS rules or a tax professional for your filing type and year.