Millions of Americans have hobbies such as sewing, woodworking, fishing, gardening, stamp and coin collecting, but when that hobby starts to turn a profit, it might just be considered a business by the IRS.

Definition of a Hobby vs. a Business

The IRS defines a hobby as an activity that is not pursued for profit. A business, on the other hand, is an activity that is carried out with the reasonable expectation of earning a profit.

The tax considerations are different for each activity so it's important for taxpayers to determine whether an activity is engaged in for profit as a business or is just a hobby for personal enjoyment.

Of course, you must report and pay tax on income from almost all sources, including hobbies. But when it comes to deductions such as expenses and losses, the two activities differ in their tax implications.

Is Your Hobby Actually Your Business?

If you're not sure whether you're running a business or simply enjoying a hobby, here are some of the factors you should consider:

Does the time and effort put into the activity indicate an intention to make a profit?

Do you depend on income from the activity?

If there are losses, are they due to circumstances beyond your control or did they occur in the start-up phase of the business?

Have you changed methods of operation to improve profitability?

Do you have the knowledge needed to carry on the activity as a successful business?

Have you made a profit in similar activities in the past?

Does the activity make a profit in some years?

Do you expect to make a profit in the future from the appreciation of assets used in the activity?

An activity is presumed to be for profit if it makes a profit in at least three of the last five tax years, including the current year (or at least two of the last seven years for activities that consist primarily of breeding, showing, training, or racing horses).

The IRS says that it looks at all facts when determining whether a hobby is for pleasure or business, but the profit test is the primary one. If the activity earned income in three out of the last five years, it is for profit. If the activity does not meet the profit test, the IRS will take an individualized look at the facts of your activity using the list of questions above to determine whether it's a business or a hobby. (It should be noted that this list is not all-inclusive.)

Business Activity: If the activity is determined to be a business, you can deduct ordinary and necessary expenses for the operation of the business on a Schedule C or C-EZ on your Form 1040 without considerations for percentage limitations. An ordinary expense is one that is common and accepted in your trade or business. A necessary expense is one that is appropriate for your business.

Hobby: If an activity is a hobby, not for profit, losses from that activity may not be used to offset other income. You can only deduct expenses up to the amount of income earned from the hobby. These expenses, with other miscellaneous expenses, are itemized on Schedule A and must also meet the 2 percent limitation of your adjusted gross income in order to be deducted.

What Are Allowable Hobby Deductions?

If your activity is not carried on for profit, allowable deductions cannot exceed the gross receipts for the activity.

Note: Internal Revenue Code Section 183 (Activities Not Engaged in for Profit) limits deductions that can be claimed when an activity is not engaged in for profit. IRC 183 is sometimes referred to as the "hobby loss rule.