Payroll Basics for SMBs: Do It Right, Avoid the Fire Drills

Introduction

Payroll is mission-critical: it affects people, taxes, and trust. The good news—most problems are preventable with a few disciplined steps.

The essentials

• Classify correctly: employee vs. contractor. Misclassification creates tax risk.

• Set a schedule: weekly/biweekly/semi-monthly—then stick to it.

• Collect the right forms: W-4 for employees; W-9 for contractors.

• Track hours & changes: hours, commissions, bonuses, PTO, terminations.

• Handle deductions: benefits, garnishments, retirement.

• Pay taxes & file on time: federal/state/local; quarterly and annual returns.

• Year-end forms: W-2 for employees; 1099-NEC for eligible contractors.

Common mistakes to avoid

• Paying “off cycle” without taxes calculated correctly.

• Missing final checks or not paying out accrued PTO per policy.

• Forgetting to update rates/benefits after changes.

• Storing sensitive data in email or spreadsheets without access controls.

A simple run checklist

1. Cutoff & approvals – lock changes; managers approve hours.

2. Preview & QA – review totals, taxes, and outliers.

3. Run & fund – submit payroll; confirm debits and net pay.

4. Post to books – record payroll journal(s) and attach reports.

5. After-run tasks – update PTO balances; file or schedule taxes.

Records to keep (and for how long)

Keep payroll registers, tax filings, W-2/1099 copies, and employee files per federal/state retention rules (often 4+ years). Use secure storage and two-factor access.

Wrap-up

Reliable payroll is mostly process. Set a clear cadence, keep records tidy, and preview every run—you’ll avoid 90% of surprises.