Learning how to set up payroll for a small business feels intimidating the first time, mostly because the government wants forms you have never heard of and deadlines you did not know existed.
The good news: the process follows a fixed order, and once you build it correctly, payroll runs mostly on autopilot.
This guide walks through every step, from getting your federal tax ID to running your first paycheck, plus the tax rates and filing dates you need for 2025 and 2026.
Step 1: Get an Employer Identification Number (EIN)
Your EIN works like a Social Security number for your business. The IRS uses it to track every payroll tax deposit and return you file.
How to get one:
- Apply online through the IRS EIN Assistant and receive your number in minutes
- The application costs nothing, so ignore any site charging a fee
- Paper filers use Form SS-4, which takes about four weeks
You will also need a state tax ID in most states, one for income tax withholding and usually a separate account for unemployment insurance. Check your state's revenue department and labor agency, since the two agencies rarely share an application.
Step 2: Decide Whether Your Workers Are Employees or Contractors
Get this wrong, and the back taxes hurt. The IRS looks at three areas of control:
| Category | What the IRS examines |
|---|---|
| Behavioral control | Do you direct how, when, and where the work happens? |
| Financial control | Do you supply tools, cover expenses, and set the pay rate? |
| Relationship | Is there a written contract, benefits, or an ongoing arrangement? |
Employees get a W-2, tax withholding, and unemployment coverage. Independent contractors get a 1099-NEC and handle their own taxes. When the answer feels murky, file Form SS-8 and let the IRS decide rather than guessing.
The Department of Labor also applies its own economic reality test under the Fair Labor Standards Act, and its standard differs from the IRS version. A worker can pass one test and fail the other.
Step 3: Collect New Hire Paperwork
Before anyone earns a dollar, gather these documents:
- Form W-4 so you know how much federal income tax to withhold
- Form I-9 verifying work authorization, completed within three business days of the start date
- State withholding certificate, required in most states with income tax
- Direct deposit authorization with bank routing and account numbers
- New hire report filed with your state directory, generally within 20 days of hire
Keep I-9 forms in a separate file from personnel records. If immigration officials audit you, you hand over one folder instead of your entire HR cabinet.
Step 4: Choose a Pay Schedule and Set Your Pay Rates
Pick a frequency and stick with it. Many states set minimum pay frequency rules, so confirm your state's requirement before choosing.
- Weekly: common in construction and hourly trades
- Biweekly: 26 paychecks a year, the most popular option in the United States
- Semimonthly: 24 paychecks, easier for salaried teams and accounting
- Monthly: cheapest to process, but restricted or banned for hourly workers in several states
On wages, the federal minimum sits at $7.25 per hour and has not moved since 2009. More than 30 states now set a higher floor, and some cities go higher still. Pay whichever rate benefits the employee.
Also classify each role as exempt or nonexempt under the FLSA. Nonexempt staff earn overtime at 1.5 times their regular rate for hours past 40 in a workweek.
Step 5: Understand the Payroll Taxes You Must Withhold and Pay
Here is where the math lives. Some taxes come out of the employee's check, some come out of your pocket, and a few come from both.
| Tax | Employee pays | Employer pays | Notes |
|---|---|---|---|
| Social Security | 6.20% | 6.20% | Wage base of $176,100 in 2025, rising to $184,500 in 2026 per the SSA |
| Medicare | 1.45% | 1.45% | No wage cap |
| Additional Medicare | 0.90% | Nothing | Applies to wages above $200,000 |
| Federal income tax | Per W-4 | Nothing | Use IRS Publication 15-T tables |
| FUTA | Nothing | 6.0% on first $7,000 | Drops to 0.6% with the full state credit |
| State unemployment | Usually nothing | Varies by state and claim history | New employers get an assigned starting rate |
Deposit schedules follow the IRS lookback period. Most small employers deposit either monthly or semiweekly, and the IRS assigns your schedule based on the tax you reported during a four-quarter lookback window.
Late deposits carry real penalties. The IRS charges 2% for deposits one to five days late, 5% for six to 15 days, and 10% beyond 15 days, climbing to 15% once the agency issues a notice. Miss a few, and the penalties outrun the cost of software.
Step 6: Pick Payroll Software or a Service Provider
You have three realistic paths.
Do it yourself with spreadsheets. Free, and a fast way to lose a weekend. Practical only for one or two employees in a single state.
Use payroll software. The service calculates withholding, files your 941 and 940, deposits taxes, and generates W-2s each January.
Hire an accountant or PEO. Costs more, but you get a human who answers the phone when a state notice arrives.
For most businesses under 50 employees, software wins on cost and speed. Gusto, one of the widely used platforms in this space, handles automatic tax filing in all 50 states, direct deposit, contractor payments, and employee self-service accounts. New accounts can trim the first-year cost with a Gusto coupon code applied at signup.
What to Compare Before You Commit
- Does the provider file and pay federal, state, and local taxes automatically?
- Does it cover multi-state teams if you hire remotely?
- Does it handle contractors and 1099-NEC filing in the same account?
- Are benefits, workers' comp, and time tracking built in or sold separately?
- Does the company cover penalties caused by its own filing errors?
Plan tiers usually separate simple payroll from full HR tools. You can review the Gusto pricing and plans breakdown to see where automatic filing, time tracking, and hiring tools sit across the different levels. Expect a monthly base fee plus a per-person charge, which is the standard structure across the industry.
Step 7: Run Your First Payroll
Work through this sequence:
- Gather hours. Pull timesheets or time-clock data for nonexempt staff.
- Add extras. Overtime, bonuses, commissions, and tips all count as taxable wages.
- Subtract pre-tax deductions. Health premiums under a Section 125 plan and traditional 401(k) contributions come out before tax calculations.
- Calculate withholding. Software does this instantly using Publication 15-T tables.
- Subtract post-tax items. Roth contributions, wage garnishments, and union dues.
- Approve and send. Most direct deposits settle in two business days, though same-day options exist.
- Deliver pay stubs. Many states require an itemized statement showing hours, rates, and every deduction.
Run your first payroll a few days early. Bank verification and tax account setup often take longer than expected.
Step 8: File Returns and Keep Records
Mark these deadlines on the calendar:
| Form | Purpose | Due date |
|---|---|---|
| Form 941 | Quarterly federal payroll tax return | Last day of the month after each quarter |
| Form 940 | Annual FUTA return | January 31 |
| Form W-2 | Employee wage statement | January 31 to employees and the SSA |
| Form 1099-NEC | Contractor payments of $600 or more | January 31 |
| Form W-3 | Transmittal summary for W-2s | January 31 |
Employers with very small tax liability may qualify to file Form 944 once a year instead of quarterly 941s, but only after the IRS notifies you in writing.
Recordkeeping rules: The IRS wants employment tax records held for at least four years. The FLSA requires payroll records for three years and time records for two. Store everything digitally with a backup, because paper files disappear during office moves.
Common Payroll Mistakes That Cost Small Businesses Money
- Treating employees as contractors to skip payroll tax, which triggers back taxes plus penalties
- Missing deposit deadlines because nobody set a calendar reminder
- Miscalculating overtime by leaving bonuses out of the regular rate
- Ignoring state notices that arrive months after a rate change
- Paying owners incorrectly, since S-corp owners must take reasonable W-2 wages while sole proprietors take draws instead
- Skipping workers' compensation insurance, required in nearly every state once you hire your first employee
The U.S. Small Business Administration publishes a helpful hiring checklist that covers the insurance and posting requirements many first-time employers overlook.
Payroll Setup Checklist
Print this and work down the list:
- Federal EIN from the IRS
- State withholding and unemployment accounts
- Worker classification decided for every hire
- W-4, I-9, and state forms collected
- New hire reported to the state directory
- Pay schedule chosen and posted
- Workers' compensation policy active
- Payroll software connected to your business bank account
- Deposit schedule confirmed with the IRS
- Labor law posters displayed where staff can see them
Frequently Asked Questions
How much does payroll software cost for a small business?
Most providers charge a monthly base fee somewhere between $40 and $80, plus $6 to $22 per employee each month depending on the feature tier you select.
Can I run payroll myself without software?
Yes, though you take on the tax math, deposit deadlines, and year-end filings. The IRS charges the same penalties whether the mistake came from a spreadsheet or a service.
Do I need payroll if I am the only employee of my own S corporation?
Yes. The IRS expects S-corp shareholder-employees to draw a reasonable salary through payroll, with the usual withholding and W-2 reporting.
How long does payroll setup take?
Plan on one to three weeks. The EIN arrives instantly online, but state unemployment accounts and bank verification typically account for most of the wait.