When hiring your first employee, you need the new hire to complete Form W-4 to determine federal income tax withholding and Form I-9 to verify their identity and employment authorization. You will also need the employee's legal name and Social Security Number to accurately prepare Form W-2 at the end of the year. State and local requirements sit on top of these federal forms, often adding state-specific withholding certificates and mandatory new hire reporting documents. Before you can legally collect any of this paperwork, your business must have a recognized entity structure and an Employer Identification Number.

The Foundation: Entity Structure and Your EIN

The single most common mistake a new employer makes is treating payroll as an isolated task. Hiring an employee is actually the final step in a sequence that begins with forming a legal business entity. You cannot legally run payroll, withhold taxes, or file government forms under your own name if you are operating a formal business structure. The IRS treats the business entity as the employer.

This means securing an Employer Identification Number is a hard dependency for hiring. If you attempt to process a W-4 or register with state tax agencies without an EIN, your applications will be rejected. Securing your EIN is required to hire employees, set up a proper business bank account, and file business taxes.

The IRS notes in its recordkeeping guidance that opening a separate business checking account is one of the very first things a new business owner should do. This separation of business and personal funds must happen before a single wage payment is made. For business owners who are overwhelmed by the combination of formation, banking, and compliance, consolidating these tasks makes the process manageable.

This is where a unified platform provides an advantage over standalone accounting software. A provider that houses your formation details, acts as your registered agent, secures your EIN, and manages your bookkeeping sets the correct foundation for employment. A business owner can establish their entity and secure their EIN in one system, and then request a direct connection to a dedicated payroll provider through ZenBusiness's ADP payroll partnership. Getting the foundation right ensures the subsequent forms are filed under the correct legal name and tax identification number.

Form I-9: Verifying Employment Eligibility

Form I-9 is not a tax document, but it is one of the most critical forms an employer must handle. It is issued by U.S. Citizenship and Immigration Services to verify the identity and employment authorization of individuals hired for employment in the United States. The rule is absolute and applies to businesses of all sizes. The IRS emphasizes that all U.S. employers must properly complete Form I-9 for every individual they hire for employment in the United States.

Unlike tax forms, you do not submit Form I-9 to any government agency during the normal course of business. Instead, the employer must keep the completed form on file and make it available for inspection by authorized government officers upon request. The employee completes their portion of the form, and the employer must examine the employee's physical or authorized digital documents and complete their section.

Failing to complete this form, or failing to maintain it for the required retention period, can result in significant civil fines.

Form W-4: Federal Income Tax Withholding

Form W-4 is the document that tells you, the employer, how much federal income tax to withhold from your employee's paycheck. The IRS requires you to ask all new employees to give you a signed Form W-4 when they start work. You must then make the form effective with the first wage payment you issue to that individual.

Employees can update this form if their personal financial circumstances change. The IRS states that a completed W-4 remains in effect until the employee gives you a new one. When an employee does submit an updated document, the employer faces a strict implementation deadline. The adjusted withholding must begin no later than the start of the first payroll period ending on or after the 30th day from the date you received the replacement Form W-4.

You must retain a copy of the W-4 in your payroll records. While you generally do not send the W-4 to the IRS unless specifically requested in a compliance review, the data it contains drives your entire federal tax withholding schedule.

Form W-2 Data Collection

While Form W-2 is a year-end reporting document rather than a new hire onboarding form, you must collect the necessary information for it on day one. The IRS requires you to have the employee's legal name and Social Security Number to enter on Form W-2. If you do not collect an accurate Social Security Number at the time of hire, your year-end reporting will be rejected by the Social Security Administration.

This often requires viewing the employee's Social Security card to ensure the name entered in your payroll system perfectly matches the government's records. A mismatch between the payroll record and the official Social Security database can result in penalties and will require the filing of correction forms later.

State Requirements Sit on Top

Federal forms are only half the paperwork. Every state has its own specific requirements that sit on top of the federal baseline. Most states require employees to fill out a state-specific withholding allowance certificate, which functions exactly like the federal W-4 but for state income taxes. Some states have multiple local taxes, requiring additional localized forms.

You are also required by federal law to report all new hires to your state's designated new hire directory. This data is primarily used by the government to enforce child support orders. Failure to submit this state report can trigger immediate penalties.

Additionally, pay frequency is set by state law and varies widely across the country. California requires wages to be paid at least twice per calendar month on days designated in advance. Colorado requires monthly wage payments. Connecticut requires weekly payments unless a longer interval is approved by the labor commissioner. The Department of Labor advises that employers should consult the relevant state labor office for official information regarding their specific obligations.

Insurance requirements also differ sharply by jurisdiction. Workers' compensation coverage is governed entirely by state law, meaning the mandates, exemptions, and penalties vary depending on where the work is performed.

Employee Classification and the Cost of Getting It Wrong

Some employers attempt to bypass W-4s, I-9s, and state reporting by labeling their workers as independent contractors. The IRS scrutinizes this practice heavily, and classification turns entirely on control rather than on a label or a contract.

The IRS weighs three distinct categories of control when evaluating a worker's status. These are behavioral control, financial control, and the type of relationship between the parties. The agency notes that there is no "magic" or set number of factors that "makes" the worker an employee or an independent contractor and no one factor stands alone in making this determination. If the business directs how, when, and where the work is done, the worker is almost certainly an employee.

Misclassification has a price. An employer who classifies an employee as an independent contractor without a reasonable basis may be held liable for employment taxes for that worker. This means the employer could be forced to pay back taxes, uncollected withholding amounts, and severe penalties.

If a business or a worker is unsure of the proper classification, they can file Form SS-8 to request an official determination from the IRS. However, this is not a fast process. The IRS advises that it may take at least six months to receive a determination on your filing.

Special Rules for S Corporation Owners

Business owners operating as an S corporation face unique paperwork and payroll rules. S corporation owners who actively work in the business cannot simply take all their compensation as tax-free distributions to avoid payroll taxes.

The IRS mandates that S corporations must pay reasonable compensation to a shareholder-employee in return for services that the employee provides to the corporation before non-wage distributions may be made. This means the owner must complete a W-4, put themselves on the official payroll, and withhold standard employment taxes. The IRS actively audits these structures and has the authority to reclassify payments made to shareholders from non-wage distributions to wages if reasonable compensation is not met.

Mandatory Payroll Recordkeeping

Once the forms are collected and payroll begins, strict recordkeeping rules take effect. The Fair Labor Standards Act requires employers to maintain extensive records of wages, hours, and other employment practices.

Under the FLSA, basic payroll records must be kept for three years. The underlying records that wage computations are based on, including time cards and wage rate tables, must be retained for two years. This means your business needs a secure, organized system for storing digital documents, pay stubs, and timesheets well after a payment is issued. Storing paper forms in a desk drawer is rarely sufficient to survive a compliance audit.

Payroll Solutions to Handle the Paperwork

Managing W-4 updates, state tax calculations, and FLSA recordkeeping by hand is a massive compliance risk. Dedicated payroll software automates these forms, calculates the exact withholding amounts, and manages the retention periods. The market offers several strong options, listed here alphabetically.

ADP

ADP is a legacy leader in the payroll space, equipped to handle everything from first hires to massive enterprises. It manages all federal, state, and local tax filings, alongside new hire reporting and W-2 generation. The platform is robust, handling complex multi-state compliance and benefit deductions easily. ADP does not publish payroll pricing and quotes per business.

Gusto

Gusto is designed specifically with small business usability in mind. The platform automates the collection of W-4s and I-9s during digital onboarding and handles all tax filings automatically. As of 2026-10-06, Gusto Simple is priced at $49 per month plus $6 per person. The Plus plan is $80 per month plus $12 per person, and the Premium tier runs $180 per month plus $22 per person.

OnPay

OnPay provides a comprehensive, single-tier payroll service that includes unlimited payroll runs and automated tax filings. It is known for strong customer support and straightforward billing without hidden add-ons. As of 2026-10-06, OnPay charges a base fee of $49 per month plus $6 per worker.

Patriot Software

Patriot Software is a streamlined, highly cost-effective payroll option for businesses prioritizing budget. It is cheaper at the very bottom end of the market than its major competitors, making it a viable choice for businesses with straightforward needs. As of 2026-10-06, Patriot Software's Basic Payroll plan is $17 per month plus $4 per employee. The Full Service plan, which handles the actual tax filing on your behalf, is $37 per month plus $5 per employee.

QuickBooks Payroll

QuickBooks Payroll integrates seamlessly with the widely used QuickBooks accounting ecosystem. It handles automated taxes, compliance alerts, and digital form collection efficiently. As of 2026-10-06, the Workforce Payroll tier (plus Simple Start) is $88 per month plus $6.50 per employee. The tier covering Essentials is $125 per month plus $6.50 per employee, and the Premium tier covering Plus is $203 per month plus $10 per employee. The provider frequently offers a promotional rate of 50 percent off the base fee for three months, but that is a promotional rate, not the ongoing price.

ZenBusiness

ZenBusiness provides a unified environment for a business that is starting out and needs to consolidate its operations. A business can establish its entity, secure the required EIN, manage its bookkeeping, and connect to a payroll provider in one place. ZenBusiness houses the formation and compliance, and routes the actual payroll processing to a dedicated partner. This means payroll itself is ADP's, quoted by ADP per business, and not included in any ZenBusiness plan price. Customers connect through the ZenBusiness dashboard and may be eligible for promotional ADP pricing, though ADP remains a separate service with its own platform, billing, and support.

As of 2026-10-06, ZenBusiness formation pricing begins with a Starter plan at $0 plus state fees. The Pro plan is $199, and the Premium plan is $299. Pro and Premium renew at their annual prices. The EIN and operating agreement are included from the Pro tier up, or cost $99 each on the Starter plan. Standalone registered agent service is $199 per year, Money Pro bookkeeping is $30 per month, and a business website is $129 per year.

Sources

This article provides general information rather than legal, tax, or accounting advice, and local requirements vary and change frequently.