My 6 year old son made roughly $650 in modeling in 2016 thru 3 different agency's. Didn't get a 1099 or w2. I'm totally confused. I have turbo tax home & busns software.

You have the right TurboTax edition to report this for your son. You will be reporting it on Schedule C Profit or Loss from Business. He is considered to be an Independent Contractor. 

Most people get a Form 1099-MISC in the mail when they do contract or freelance work and make over $600. It's possible your son didn't make more than $600 from any one agency.

Since you didn't receive a 1099-MISC, you can report other income simply by following the instructions below:

1. Sign into you TurboTax account.

2. Click Pick up where I left off (if not already open)

3. Click Federal Taxes tab

4. Click Wages & Income sub category.

5. Select I'll choose what I work on option.

6. Scroll all the way down to the Miscellaneous Income, 1099-A, 1099-C (under less common income) and click Start/Update.

7. Click Start/Update next to Other income not already reported on a Form W-2 or Form 1099 and follow the online screen prompts to enter your income.

You probably have some expenses. If the net profit amounts to less than about $410, it won't generate any Self-Employment taxes which are typically about 15% of the profit in addition to any regular income tax.

Here are some expenses that may help you do that:

• Communication costs, for example cell phones, data plans, internet or wireless services, land or fax lines, long-distance charges, voicemail or answering services, call waiting, etc.
• If also used for personal reasons (for example, internet service), then only the proportion used in business is allowed as an expense
• Office supplies (paper, toner, writing instruments, etc.), software, stamps, envelopes, shipping materials, cleaning supplies
• Any licenses or permits that are required for your profession
• Fees and membership dues you paid to professional associations or unions
• Continuing education or certification related to your work
• Mileage accumulated during the course of your work
• However, regularly commuting to and from a fixed office wouldn't qualify
• Advertising costs, including business cards and websites
• Fees for attorneys, consultants, accountants, and other professionals
• Liability insurance, errors and omissions insurance, surety bonds
• Credit card and bank fees
• Health care premiums

As a self-employed writer, artist, or performer, you can write off these expenses in addition to the ones listed above:

• Equipment, like musical instruments, easels, recorders, stage props
• Supplies such as canvas, paint, makeup
• Costumes (if unsuitable for everyday wear)
• Books, magazines, or other reference materials used in your work
• Advertising, including websites
• Agent commissions
• Cell phones, data plans, and second phone line
• Vehicle expenses or standard mileage
• Travel expenses such as airfare, auto rental, and lodging

These out-of-pocket expenses will offset (reduce) your earnings, lowering the amount of income you pay taxes on.