Direct answer: Before first payroll, verify the employer's tax identity, required state employer registration, worker classification, pay and timekeeping inputs, withholding forms, deposit/filing ownership, and recordkeeping process. Software can administer those tasks, but it is not the legal requirement.

1. Confirm the employer identity and EIN

If the business has an employee, the IRS EIN rules generally move from “may be optional” to “required.” If the entity is not yet formed, the IRS says to form the legal entity with the state before applying for the EIN.

Official sourceInternal Revenue Service: Get an employer identification number — Use the free IRS route. An EIN service fee is not an IRS requirement.

Use the EIN decision guide if you are still unsure whether your LLC needs a separate EIN.

2. Register with the state employer agency before the state deadline

Federal employer setup does not replace state employer registration. Each state can impose its own payroll-tax, unemployment, new-hire, wage, insurance, and reporting rules. Use the official state agency route rather than assuming another state's checklist applies.

Find the official state registration route through the SBA state lookup.

California example: California has its own employer-registration, workers' compensation, wage, new-hire reporting, posting, and payroll rules. Open the reviewed California first-hire path.

3. Resolve employee-versus-contractor classification

Payroll readiness begins with the worker relationship. A contract label alone does not settle whether a worker is an employee or independent contractor, and federal and state tests can differ by purpose. If classification is uncertain, stop the generic checklist and verify the applicable test before running payroll.

Start with the IRS employee-versus-independent-contractor guidance.

4. Collect the federal onboarding and withholding inputs

Before payroll is processed, assign ownership for federal withholding information and employment-eligibility verification. The worker's Form W-4 supplies federal withholding information, while Form I-9 is the federal employment-authorization verification process. State withholding forms may also apply.

IRS Form W-4

Official sourceU.S. Citizenship and Immigration Services: Employment Eligibility Verification (Form I-9)

5. Lock the pay-period, timekeeping, wage, and deduction inputs

Payroll calculations depend on facts that software cannot safely invent: regular rate, hours worked, overtime treatment, salary or hourly status, pay period, payday, pre-tax and post-tax deductions, reimbursements, and any state or local wage rules. Verify those inputs before the first run.

This guide does not determine exempt status, overtime eligibility, meal/rest obligations, leave rules, or a local minimum wage.

6. Assign tax-deposit, return, and year-end reporting ownership

The employer remains responsible for knowing who will calculate withholding, make federal and state deposits, file employment-tax returns, produce wage statements, handle corrections, and prepare year-end reporting. If a payroll provider performs these tasks, confirm exactly which filings and deposits are included rather than assuming “full service” means every obligation is covered.

Use IRS Publication 15 (Circular E) for the federal employer tax baseline.

7. Create a first-payroll correction and records path

Before payroll is live, decide where payroll records, withholding forms, time records, tax confirmations, wage statements, and corrections will be retained. Name the person responsible for fixing an incorrect input or missed filing. A first payroll with no correction owner is not operationally ready.

First-payroll readiness gate

  • Legal entity and EIN are confirmed.
  • Required state employer accounts are active or their deadlines are calendared.
  • Worker classification has been reviewed.
  • Applicable pay rate, pay period, payday, timekeeping, overtime, and deduction inputs are confirmed.
  • W-4, I-9, and applicable state withholding/onboarding documents have owners and deadlines.
  • Workers' compensation and other state-specific employer requirements have been checked.
  • Tax deposits and employment-tax returns have a named owner.
  • New-hire reporting has a named owner and deadline where required.
  • Record retention and correction procedures exist.
  • The person running payroll knows which questions require a tax, payroll, HR, insurance, or employment-law professional.

Payroll software is optional help, not the legal requirement

A payroll platform can reduce calculation, deposit, filing, and reporting work. It cannot decide whether a worker is correctly classified, which local rules apply, whether an exemption is valid, or whether the setup data you entered is accurate. Those are employer facts and legal/tax questions, not software features.

No payroll affiliate link is live on this page. Business Launch Index will add compensated payroll help only after a partner is approved and only after the direct official obligations remain visible.

Decide whether one employee actually justifies payroll software →

National baseline versus state-specific payroll

This page is intentionally a national readiness baseline. State and local rules can add employer registration, unemployment, disability, paid leave, wage, payday, new-hire reporting, workers' compensation, posting, and recordkeeping requirements. Do not treat the federal checklist as a complete state employment-law audit.

Interactive routeRun the Start-to-First-Hire NavigatorFederal identityVerify the EIN stepCaliforniaUse the California first-hire checklist

Educational information only; not legal, tax, accounting, payroll, insurance, or HR advice. Verify current federal, state, local, and industry rules before acting.