How to enter deduction for internet service expense for web developers in a home office.I am a website developer working in a home office.

It's simple and necessary in today's environment.  The direction from the IRS is to determine the business percentage based on time used for business against total time of use for both personal and business.

A link is provided here to help with some other items that are easily convertible between business and personal use.

• Mobile Phones, Internet and Other Easy Tax Deductions
• Maintaining accurate records is very important to verify your decisions and proof should you need at any time.
• Once you make your determinations you can enter the expenses in the business section of your return.

While you are logged into your TurboTax Home & Biz account:

• Business tab > Continue > I'll choose what I work on > Business Income and Expenses > Update > Edit
• Click the attachments to enlarge and view