Just a heads up: be careful with clothing expenses. Unless it's a uniform or something with your company's logo on it, the IRS will consider it to be "dual use" (meaning business & personal) and therefore not deductible. However, if the clothing is some form of necessary "safety gear," then you're probably okay.
You'll enter this in the Business Income & Expenses section of TurboTax Self-Employed by clicking Business Expenses and selecting Other Common Business Expenses.
Here you'll see a list of business expenses and you'll scroll to the bottom and click on Other Misc Expenses. That will take you to a write-in grid where you can provide a description and enter the amount.
