No.<p>Assuming you're in the U.S., incorporation is neither here nor there in terms of transactions and taking in income.<p>Company payments to sole proprietorships and to partnerships need to be tracked by companies, and they are required to issue IRS form 1099 payment statements to non-corporate payees annually, when payments are above $600, and some companies elect to issue them to all non-corporate entities even if less than $600.<p>Another commenter mentions form W-9. This is merely a request to the IRS for a Tax ID number for some business. You can see that on the form, all of the types of entity you could be are mere check-off boxes. You can have several Tax ID numbers, as an individual running several separate non-corporation (that is sole-proprietorship) businesses. There is nothing special about a corporate form for obtaining one or more Tax ID Numbers, also called EIN, Employer Identification Number. The businesses that pay you want your EIN in order to issue a year-end 1099.<p>Corporate-ness typically involves several values (and administrative costs) to a business. The leading one, is a limitation of liability, when things go wrong, rather than your own assets (however small or large your own personal assets may be): it is the corporation that is acting, not you, and the corporations's assets are looked to remedy errors and injuries. Similarly, for partnerships, all partners are liable for actions of their partner: this is what makes a corporate form useful for a multi-investor, multi-partner business. Sometimes insurance is available, and not so expensive that it can be an adequate means to meet the some potential liabilities, sometimes not.<p>Then there are tax and income issues that are different than the sole-proprietorship.<p>The questions you should ask your own accountant, and lawyer, and business advisor, which you now are on notice that you should have:<p>1. What particular advantages and costs come with the several typical operating entities you could use: Corporation, Limited Liability Company (LLC), and sole proprietorship (and partnership if you have a partner).<p>2. Separate from that, what are the tax consequences of each entity, and several Federal tax-filing-statuses: sole proprietorship, partnershp, LLC elections, Subchapter-S, Subchapter-C taxation (LLC and corporations)?<p>3. Is there any investor and partner involved, and can a non-partnership entity aid in structuring operations, and limiting your liability from your partner's incorrect actions?