I work st home. Can I still claim my utilities and mortgage or is the standard deduction better?

[SweetieJean]

There is no more deduction for employee business expenses.

[KatrinaB]

Working from home does not affect your ability to claim itemized deductions instead of the standard deduction on your tax return. Do not confuse itemized deductions claimed on Schedule A for personal expenses with the business-related expenses claimed for a home office. Your mortgage interest and real estate taxes are personal expenses that can be claimed on Schedule A. However, If you work from home and you are self-employed, then you can also claim the portion of utilities and mortgage interest related to your business income. You will need TurboTax Self-employed to do so. 

If you are not self-employed then you cannot claim business-related expense this year. This type of deduction has been suspended under the new tax law.  

https://ttlc.intuit.com/replies/3302005