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Employer Forms

Your source for essential employer documents and forms. Including New Business Forms, Federal/State Withholding, Social Security, and more.


With our resources, you can access a variety of critical employer forms, such as new business forms, federal and state withholding certificates, software, and Social Security information. All of these resources can be found in one convenient place, making it easy to access the information you need. Whether you are just starting out or need to update critical employer documents, our one-stop shop has the resources you need.
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New Business Required Forms 

Whether you’re starting a new business at the turn of the new year or looking forward to your first quarterly tax payment, depending on how your business is organized, you may have different tax requirements. 

Form SS-4

Applying for an employer identification number (EIN) is an important step for businesses. To apply, you must use Form SS-4. Once you complete the form, you can submit it online, by mail, or by fax. You should receive your EIN within four weeks of submission.

Form 8655

Use this form to authorize a reporting agent to sign and file certain returns, make deposits and payments, receive duplicate copies of tax information, notices, and other communication, and provide IRS with information to aid in penalty relief determinations.

Common Employee Forms

Completing state and federal new employee forms is an important step in the hiring process. It is important to ensure all forms are completed accurately and submitted to the appropriate government agency in a timely manner.

Payroll Resource Packet

Everything you need for payroll best practices, our best Cello client resource.

Form(s) 1099

These forms are for independent contractors reporting income from self-employment earnings, interest, and more.

Form W-4

The W-4 form tells the employer the correct amount of federal tax to withhold from an employee's paycheck.

Form I-9

I-9 is used to verify an employee’s identity and to determine whether they are eligible to begin work for the company.


Form MI-W4

Employee's Michigan Withholding Exemption Certificate


Employee's Withholding Certificate for City of Detroit Income Tax


Form IT-4

Employee's Withholding Exemption Certificate


Form WH-4

Employee's Withholding Exemption and County Status Certificate

Form WH-47

Certificate of Residence

Form WH-4MIL

Annual Nonresident Military Spouse Earned Income Withholding Tax Exemption Form


Form IL-W4

Employee's Illinois Withholding Allowance Certificate

Form IL-W-5-NR

Employee's Statement of Nonresidence in Illinois


Form WT-4

Employee's Wisconsin Withholding Exemption Certificate/New Hire Reporting

Form WT-4A

Worksheet for Employee Withholding Agreement

Form W-220

Nonresident Employee's Withholding Reciprocity Declaration

Form W-221

Nonresident Military Spouse Withholding Exemption


Form MWR

Reciprocity Exemption/Affidavit of Residency for Tax Year 2022

Form W-4MN

Minnesota Withholding Allowance/Exemption Certificate

IRS & Government Resources

The IRS and US Government provide a variety of resources including FAQs and helpful tools on many topics including taxes, government benefits, and other resources. 

Social Security Number Verification

The Social Security Administration provides this resource to help you verify SSNs of current and potential employees. Website

This site is from the Department of Labor to provide answers to commonly asked questions that employers might have.

IRS Withholding Calculator

Use this tool to estimate the federal income tax you want your employer to withhold from your paycheck.

IRS Business Resource Center

Resources for taxpayers who file Form 1040 or 1040-SR, Schedules C, E, F or Form 2106, and small businesses with assets under $10 million.

OSHA Regulations

OSHA's mission is to ensure that employees work in a safe and healthful environment by setting and enforcing standards and by providing training, outreach, education, and assistance. Employers must comply with all applicable OSHA standards.

Additional Resources

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