National Income Tax Service is also listed under the following categories: Standard Yellow Pages Heading (SYPH) Categories:

• Accounting & Tax Services
• Tax Return Preparation

North American Industry Classification System (NAICS) Categories:

• Tax Preparation Services > Accounting & Tax Services, By Name
• Other Accounting Services > Tax Services

Standard Industry Classification (SIC) Categories:

• Tax Return Preparation Services
• Accounting, Auditing, And Bookkeeping Services > Tax Services