What is a primary requirement for a tax return preparer before they can file federal tax returns?

The primary requirement for a tax return preparer before they can file federal tax returns is obtaining a Preparer Tax Identification Number (PTIN). The IRS mandates that all paid tax return preparers must have a PTIN, which serves as a unique identifier for them when filing returns. This requirement helps the IRS track and regulate preparers effectively, ensuring that individuals preparing tax returns for compensation are registered and adhere to federal tax laws and guidelines.

Having a PTIN is crucial as it not only legitimizes the preparer's role but also protects the tax system's integrity by ensuring that those who are paid to prepare taxes are accountable for their work. This measure helps in maintaining the standards of tax preparation by indicating that the preparer has acknowledged their responsibilities in filing tax returns.