Do you need schedule c if you have k-1?

If you receive a Schedule K-1 from a partnership or S corporation, you generally do not need to file a Schedule C unless you also have income from self-employment activities. The K-1 reports your share of the entity's income, deductions, and credits, which you report on your personal tax return. However, if you operate a business as a sole proprietor, you would use Schedule C to report that income. Always consult a tax professional for advice tailored to your specific situation.