If I understand correctly, you have a sales business. You are selling a digital product and using an affiliate company to drive business to your product. You will enter the income and expenses for this endeavor in the "Self-employment" topic under the "Income & Expenses" tab.
The affiliate commissions could be classified as an advertising expense.
You also may need the W9 and issue a 1099-NEC if the affiliate company is not one of these exceptions.
Payments for which a Form 1099-NEC is not required include all of the following.
• Generally, payments to a corporation (including a limited liability company (LLC) that is treated as a C or S corporation).
• Payments for merchandise, telegrams, telephone, freight, storage, and similar items.
• Payments of rent to real estate agents or property managers.
[edited 2/9/2021 3:38pm]
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