Troubleshooting

To calculate your percentage; take the area or number of rooms you use for business purposes divide by the total area or number of rooms in your home. Multiply that result by the number of hours in the day you use your home for business purposes divided by 24. And then, multiply that result by the number of days you use your home for business purposes divided by 365.

To enter the calculation above, enter 100 in the Total area or rooms in the home. Enter the percentage calculated in the Area or number of rooms, of the workspace.