Payroll Setup for Service Business
Why this matters
The first W-2 hire is a milestone that scares many small contractors - and the payroll setup mistakes that follow are expensive. Missed federal payroll deposits trigger 2 - 15% per month penalties; mis-handled state filings trigger state penalties on top. Modern cloud payroll services (Gusto, ADP, QuickBooks Payroll, Square) reduce the operational burden to almost nothing - but you still need to set them up correctly + understand what's happening. This is the one-time setup guide.
Pre-hire administrative setup
Before your first hire works their first hour:
1. Federal Employer Identification Number (EIN)
- Free, instant: irs.gov/businesses/employer-id-numbers
- Required for ANY W-2 hiring
- Even if you're a sole proprietor
2. State employer registration
- Each state has unemployment + withholding tax IDs
- Register with state Department of Labor + state Department of Revenue
- Typically free, online; takes 1 - 4 weeks for some states
3. Workers compensation policy
- Required IN PLACE before first day for most states
- Premiums based on payroll × class code rate
- Quote through agent OR direct (State Compensation Insurance Fund in some states; private market in others)
- Penalty for hiring without WC = severe in many states
4. Bank account for payroll
- Many businesses keep a dedicated payroll bank account
- Easier reconciliation; clear separation
- Optional but recommended
5. Payroll service selection
- Gusto, ADP, QuickBooks Payroll, Square Payroll, Paychex
- Match price + features to operation size
- Switch later is possible but a hassle
Payroll service comparison
- Gusto: excellent UX, QBO integration, federal+state filings auto. Best 1 - 50 employees.
- QuickBooks Payroll: native QBO integration; best if already on QBO.
- ADP Run: more features, older UX, best 25+ employees.
- Paychex: variable; strong service rep model; better at 50+.
For most 1 - 10 truck operations: Gusto is the sweet spot.
New-hire onboarding (federal + state forms)
For each new W-2 employee:
Federal forms (REQUIRED):
- Form I-9: Employment Eligibility Verification. Completed within 3 business days of start.
- Form W-4: Withholding allowance certificate. Determines federal withholding amount.
- W-9 (rare for W-2; for contractor 1099 only)
State forms:
- State W-4 equivalent (most states)
- Direct deposit authorization (recommended)
- State new-hire report (required in most states; payroll service handles automatically)
Other required:
- Workers comp acknowledgment
- Drug testing consent (if applicable; see Drug Testing Programs article)
- Driver records check (DMV) for techs driving company vehicles
- Background check authorization
Employer-provided:
- Employee handbook (see Employee Handbook article)
- Job description
- Safety training materials
- Pay rate notice (some states require)
Pay cycle decision
Weekly: traditional in trades; common for hourly + tech-heavy operations. Higher admin cost (52 pay periods/year).
Bi-weekly: 26 pay periods/year. Most common modern small-biz cycle.
Semi-monthly: 24 pay periods/year. Common for salaried + office.
Monthly: 12 periods/year. Rare for hourly workers; some states prohibit for non-exempt workers.
Choose ONE + stick with it. State law often dictates minimum pay frequency (typically weekly OR bi-weekly for non-exempt).
Wage + hour rules (FLSA + state)
Federal minimum wage (2025): a modest hourly floor. Most states set a materially higher minimum, and several coastal states run well above the federal floor.
Overtime: time-and-a-half for hours over 40/week for non-exempt employees. Some states also have daily overtime (CA: over 8 hrs/day).
Exempt vs non-exempt:
- Exempt (no overtime): true salaried above a federal weekly-salary floor + meets duties tests (executive, professional, administrative)
- Non-exempt (eligible for overtime): hourly workers + lower-salary roles
Most field techs are non-exempt - they get overtime. Even if you "salary" them, if they don't meet exempt duties tests, they're still non-exempt.
Most service business owners are exempt (themselves).
Calculating overtime correctly
For non-exempt employees:
- Regular hours × hourly rate
- OT hours × 1.5 × hourly rate
- Tips + commissions + bonuses must be included in regular rate (FLSA rule that catches many small employers)
- States with daily OT (CA, AK, NV, others): daily calculations differ
Payroll service handles this when set up correctly. Verify configuration during first 3 pay periods.
Direct deposit + paychecks
- Direct deposit: free for most payroll services
- Employees prefer; reduces lost check + reissue costs
- Pay stubs (electronic OR paper) required per state law
- Federal: pay stub recommended; state laws vary
Tax deposits + filings
Federal: monthly deposit by 15th of next month OR semi-weekly (above). Form 941 quarterly (Apr 30, Jul 31, Oct 31, Jan 31). Form 940 annually by Jan 31. W-2 to employees + SSA by Jan 31. State: unemployment quarterly + withholding quarterly/monthly + new-hire report per hire + annual reconciliation. Modern payroll services handle ALL automatically - the single biggest reason to use a service vs DIY.
Common setup mistakes
- Hiring without workers comp: severe penalty + personal liability for any injury
- Wrong state taxes: setup with one state's rules when worker lives in another
- Misclassifying exempt/non-exempt: pays overtime when not required OR underpays when required
- Skipped state new-hire report: state penalty + child support enforcement issues
- Late tax deposits: 2 - 15%/month penalty
- Wrong I-9 verification timing: must be within 3 days of start
Cost of payroll
Total cost to put an hourly employee on payroll stacks several layers on top of the base wage:
- Payroll taxes (employer side ~12% of wage)
- Workers comp (varies by trade class code)
- Payroll service fee (spread across the employee's monthly hours, this comes out to a small fraction of an hour)
- Benefits, if offered
Use this when calculating your true hourly cost (see True Hourly Rate Calculation).
The single most-impactful payroll decision for a growing service contractor is HIRING THE PAYROLL SERVICE FROM DAY ONE - not trying to DIY the first few hires. Yes, you can technically file Form 941 + 940 + state forms yourself. You won't do it consistently OR correctly + the penalties will exceed a modest annual payroll service cost many times over. Sign up with Gusto OR QuickBooks Payroll BEFORE hiring; setup takes 30 minutes; from then on, payroll runs itself. Don't spend your time on this.
When to bring in an HR consultant or PEO
- 25+ employees: HR consultant or PEO (Professional Employer Organization) often makes sense
- Multi-state operations: state law complexity increases
- Specific compliance challenges (drug testing programs, background check policies)
- Union or prevailing-wage work
PEO handles ALL HR + payroll + benefits + workers comp. Higher cost but bundled compliance.
References
- IRS Publication 15 (Employer's Tax Guide / Circular E)
- IRS Form I-9 (Employment Eligibility Verification)
- IRS Form W-4
- Department of Labor FLSA (Fair Labor Standards Act)
- State Department of Labor websites
- Manuall internal: W-2 Employee vs 1099 Contractor Classification, Hiring Your First Technician