Things You'll Need
Tax Preparation Software
Qualifying for the Home Office Deduction
Determine if your home office is used exclusively and regularly to manage or administer your business. Make sure you have no other fixed location where you do the major managerial or administrative work.
Verify that your home office is also used for the convenience of your employer if you are an employee rather than an independent contractor or sole proprietor.
Calculating the Deduction
Use IRS Form 8829 if you are self-employed or Federal Worksheet 51A if you are an employee.
Take the square footage of your office and divide it by the square footage of your entire home to obtain the percentage of the costs you can claim.
Keep records of
utilities, mortgage interest, real estate taxes, rent, insurance, trash removal and security service payments that you made during the year.
Include gas and electricity bills. Use water costs only in the rare case that you use water in your business.
Save bills for repairs and maintenance of the office or entire home.
If you own or are buying your home, calculate your investment in the home - the purchase price and costs plus improvement expenses - and then find out the market value of your home at the time you converted your space into a home office. You need this information, because you are required to depreciate the office.
Follow the instructions on Form 8829 or the worksheet to calculate the deduction.
Recording the Deductions