John Lewis Taxpayer Protection Act This bill sets forth provisions for the protection of taxpayers from abusive tax collection practices and provides other protections for low-income taxpayers. Specifically, it repeals the authority for private sector tax collection contracts, allows an exclusion from gross income for income attributable to the discharge of taxpayer indebtedness, repeals the suspension of the statute of limitations during a pending application for taxpayer assistance orders, restricts tax levies on tax-exempt retirement plans, suspends tax levies on taxpayers during periods of financial disability, repeals the partial payment requirement for submitting offers in compromise of tax liabilities, requires the Internal Revenue Service to provide notice to taxpayers of eligibility for the earned income tax credit and refunds of such credit, authorizes the Department of the Treasury to regulate and sanction income tax preparers, and increases funding for low-income taxpayer clinics and taxpayer services.