Businesses, especially freelancers, independent contractors, and small business owners, will use Schedule C of Form 1040 to report business income and expenses. A series of losses or heavy deductions may cause questions to be raised as to whether an activity is conducted for profit rather than as a hobby.

By knowing the rules of the IRS, Schedule C filers can be prepared to prevent problems with the IRS. Learn about sales tax audit procedures that can help you resolve your issues with ease.
For most intents and purposes, the IRS considers whether you run an activity with the primary purpose of making money. Being a hobby is not a matter of making a loss on an activity. Similarly, just making occasional profits isn’t enough to prove it is a business.
The 3/5 year rule is one rule that is often heard. In general, if an activity has made a profit over the last three years, the IRS considers it to be a business activity. Certain horse-related activities have a two-out-of-seven-year test.
Just because the IRS says it is a hobby doesn’t necessarily mean you failed the three-out-of-five-year test, however. The overall facts and circumstances can be taken into consideration by the IRS.
Examiners are able to observe the level of commitment and consistency of your activity. Factors may include:
A business, whether it’s a successful business, can have startup costs, bad years, or experiences where there is a temporary loss. The vital point is to show that you are really making money.
When the claimed space is too large or is not IRS-compliant, the home office deduction can draw the IRS’s eye.
In general, the area must be used regularly and exclusively for business and comply with the following requirements: a principal place of business or other qualifying use.
Keep documentation showing:
Even if you often work at the kitchen table, don’t use it as your office. You must talk to professionals (like a federal tax attorney) who can help you during difficult times.
Another common issue that Schedule C taxpayers face is vehicle deductions. There should be a distinction between personal and business driving. Personal and business driving should be differentiated.
Keep a current mileage record to document:
Without supporting documentation, it can be challenging to substantiate the number of business miles for thousands of business trips at the end of the year.
There is no automatic presumption that a business is a hobby if it has Schedule C losses. Taxpayers need to be able to prove a business purpose and substantiate all deductions, though. If your return is audited by the IRS, good records, realistic expenses, and business practices can make a big difference.