Beginning Schedule C
Determine that you have a sole proprietorship. If you contract your labor or services to someone or if you sell products for a profit and are not an employee, corporation, limited liability company or member of a partnership, then you are a sole proprietor.
Verify that your business is not farming or fishing. The rules and form (Schedule F) are different for farming and fishing.
Obtain a Schedule C from an Internal Revenue Service office. You may use a Schedule C-EZ if your expenses were $2,500 or less and you had no inventory, used cash accounting, did not have a loss, had only one sole proprietor business, had no employees, are not deducting depreciation, are not claiming business use of your home, and don't have prior year passive-activity losses from this business.
Fill in your name, Social Security Number and address on the form. You must also fill in the Employer Identification Number if you have to send in any alcohol, tobacco, firearms, excise, employment or fiduciary returns or if you have a Keogh plan.
Describe your primary business or professional activity and enter the six-digit business code. Enter the name of your business if you have one.
Check the box explaining your accounting method. Most people use a simple cash method. Schedule C-EZ uses only the cash method. The accrual and hybrid methods are commonly used only by those who keep inventory records.
Check the box "yes" or "no" as to whether you "materially participated" (took an active role) in the business. Also check the box if you started or bought this business in the tax year. These questions are not asked on a Schedule C-EZ.
Determining Gross Income
Write the dollar amount of gross receipts on Line 1. This is the total amount of money paid to you for your work, business or profession. Include the sales cost of products sold and the material costs that you charged your client.
Write the sales cost of any returns or allowances on Line 2. There is no line for this on the C-EZ, so include this amount in expenses.
Write the cost to you of goods you sold on Line 4. This is calculated in Part III of Schedule C. There is no line for this on the C-EZ, so include this amount in expenses.
Write the amount of other income on Line 6. Other income includes bad debts recovered, interest you received on outstanding accounts, scrap sales, fuel tax and credit refunds, excess depreciation recapture, finance reserve income and excess government food payments to day-care providers. On the C-EZ, simply add these things to Line 1.
Calculate your gross income from these figures and write it on Line 7 of the Schedule C. For most people who do not sell a physical product, the amount on Line 7 will be the same as Line 1. For C-EZ users, there is only Line 1.
Determine whether your total expenses are $2,500 or more. If less, use the simpler Schedule C-EZ unless you do not fit the requirements described earlier in Step 3. Otherwise, use Schedule C.
Fill out Part IV if you used your vehicle for your business.
Multiply the number of business miles driven in the tax year before April 1, 1999, by 32.5 cents per mile.
Multiply the number of business miles driven in the tax year after March 31, 1999, by 31 cents per mile.
Add the two amounts together.
Add any parking charges for business.
Add the business percentage of any finance charges and car registration costs (divide business miles by total miles driven to get business percentage).
Write the total on Line 10 of the Schedule C. You may use the actual costs of operating your vehicle for business instead of this standard deduction if you prefer.
Write the total of depreciation of business equipment and business furniture on Line 13. Use Form 4562 to calculate depreciation.
Write your travel expenses on Line 24a and your expenses for meals and entertainment on Line 24b. Enter 50 percent of the amount on Line 24b on Lines 24c and 24d.
Write the cost of renting equipment on Line 20a and the cost of renting office space on Line 21b.
Write all other business expenses except office-in-home expenses on the appropriate lines of Part II.
Write the type and cost of any other expenses for which there is no specific line in Part V and put the total of Part V on Line 27 for other expenses.
Total all the expenses in Part II and write that amount on Line 28.
Subtract these expenses from gross income (Line 7) to get tentative profit on Line 29.
Complete Form 8829 if you claim office-in-home expenses. Write the allowable deduction on Line 30 of the Schedule C. Be aware the office-in-home deduction may be limited if your business is operating at a loss.
Enter your net profit or loss on Line 31 of Schedule C and Line 12 of Form 1040. You must also fill out Schedule SE to determine your self-employment tax.