I began my home business in the last two months of 2016 and made some income, but I thought I couldn't claim a home office that year, so I never listed my business expenses (desk, chair, lamp, PC). Since I am claiming a home office for 2017, can I claim those items somewhere in TurboTax since I still use them and never claimed them? I have exact amounts, purchase prices, etc.
Expenses incurred in a given tax year must be reported on that tax year's return.
In your case, since you already filed your 2016 return, you would have to file an amendment to include the expense information to determine whether it affected your 2016 tax liability.
Expenses incurred in a given tax year must be reported on that tax year's return.
In your case, since you already filed your 2016 return, you would have to file an amendment to include the expense information to determine whether it affected your 2016 tax liability.