Tax Forms and Documents

Tax Resources

Access Individual and Business Tax Forms and Documents

Listed are several different important tax forms that will assist you with business and individual tax planning.

Form W-9 
Instructions for Form W-9
Request for Taxpayer Identification Number and Certification.

Form W-4   (Instructions included)
Employee’s Withholding Allowance Certificate.

Form IL-W4
Employee’s Illinois Withholding Allowance Certificate (R-12/12).

State Tax Forms
State income and business tax forms and information.

Record Retention Guide
The Guide of Record Retention Requirements.

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Costabile & Steffens P.C. is a Certified Public Accountant firm that started providing
audit/bookkeeping services and tax planning in 1978.

Costabile & Steffens

Access Tax Resources and Information

Access important tax resources and solutions to assist you with your individual and business accounting needs.

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Trusted Tax Solutions with a Personal Touch

Our accounting firm has been delivering excellence in customer service to our clients for over 40 years. Our focus is to provide consistent quality service to every client, with a personal touch.  We are the trusted advisor that helps each client achieve goals for small to mid sized businesses and personal needs.