@Zola_de_Firmi "I have a business PayPal account."
"The PayPal transaction was deposited into a personal checking account."
I admit, I'm a little confused on why you have a Business Paypal hooked up to a personal bank account.
At any rate, what you received is probably specifically a 1099-K. Paypal, as all merchant service providers, will include the total of all the electronic payments they process for their Business Paypal accounts.
Unfortunately for you, they do not simply send this report to you as an information statement; it was reported to the IRS as income associated with whatever EIN or Social Security Number you have associated with your Business Paypal, and the IRS will expect to see it on your return, associated with the business in question.
If you do not include it, the IRS will adjust your return and include it for you above and beyond what was originally reported, increasing your income tax burden.
You may or may not be able to get Paypal to correct it, and at least on TaxSlayer, there is now a line on the Schedule C to adjust for erroneous amounts (usually Sales Tax) included on the 1099-K, probably due to all the issues companies have been having with reporting the correct totals on said 1099-Ks.
The problem with this is that Paypal did their job correctly; as far as I can see it, this was a misuse of a Business Paypal. You should not use a Business Paypal, or any given merchant service, for any payment that isn't due specifically to the business that is tied to the merchant service in question.
Anyway, while you may find a CPA here that is willing to chime in for free, you certainly won't get the kind of help you need from the support staff here; not through any fault of their own, in this case; this is simply a bit beyond what you could reasonably expect from software customer support.
I would suggest reaching out to a local CPA if you don't have any luck by day's end.
