Question: do you need your social security number for paypal?
Answer: PayPal must, by IRS tax law, send you a 1099 form to report your income if you reach these levels. If you are a buyer there is no need to report your SSN unless you apply for PayPal credit which requires the last 4 digits of your SSN, or unless you apply for a PayPal debit Mastercard which will require your full SSN.