When setting up a company in QuickBooks, which tax identification detail is specifically required?

The requirement for a Tax ID (which could encompass several forms of identification such as an EIN or Social Security Number) is essential for setting up a company in QuickBooks because it serves as a unique identifier for the business with the IRS and state tax authorities. This identification is crucial for tax reporting purposes, allowing QuickBooks to correctly track and report income, expenses, and payroll.

While other details like the company name, business registration number, or EIN are important for different reasons, the Tax ID specifically fulfills the need for an official designation that the government recognizes for tax obligations. Having this number ensures compliance with tax regulations and facilitates the payment of taxes due, thus making it a critical component in the setup process.