Payroll Compliance Checklist: Federal, State & Local Requirements

Payroll looks like a single task, but it is really a stack of obligations. Federal law sets tax rates, deposit rules, and wage standards. Each state adds its own withholding, unemployment insurance, and employment rules. Some cities and counties add taxes and ordinances on top. Miss any one layer and a perfectly accurate paycheck can still leave you out of compliance.

The stakes are real. Payroll taxes include money withheld from employees, which the government treats as held in trust, so late or missing deposits draw penalties and can create personal liability for the people responsible. Wage and hour errors can mean back pay owed to employees, and misclassifying workers can trigger audits and back taxes.

This guide breaks compliance into federal, state, and local requirements, then gives you a calendar, a recordkeeping table, and a practical checklist. Rates, wage bases, and rules change often, so the figures here reflect 2026 federal numbers at the time of writing and should be confirmed with the IRS, your state agencies, or a qualified professional.

1. The Three Layers of Payroll Compliance

The strictest applicable rule generally controls, so employers with workers in several locations must track each location separately.

2. Federal: Hiring and Wage Rules

• Form W-4: collect it from each new employee to calculate federal income tax withholding
• Form I-9: verify identity and work authorization, with the employer section completed within three business days of the start date
• New hire reporting: report new hires to your state's directory, generally within 20 days, and sooner in some states
• Minimum wage: the federal minimum is $7.25 per hour, though many states and cities set higher rates that apply instead
• Overtime: non-exempt employees must be paid at least one and a half times their regular rate for hours over 40 in a workweek
• Exempt status: exemptions depend on both job duties and salary level, and job titles alone do not decide it
• Reporting changes: new federal reporting rules for qualified tips and overtime premium pay may apply to your 2026 forms, so confirm current IRS guidance

3. Federal: 2026 Payroll Tax Table

*Figures reflect published 2026 federal amounts at the time of writing. The Social Security wage base changes every year, so verify against current IRS and SSA publications.

4. Federal: Deposits, Returns & Deadlines

*Dates move to the next business day when they fall on a weekend or holiday. Your deposit schedule is set by a lookback period, and 1099 reporting thresholds have been changing, so confirm current rules.

5. Filing Deadline Density Chart

The chart below counts the major federal return deadlines (not counting regular deposits) by month. January is the crunch point.

*Federal returns only. State and local filings add more deadlines throughout the year.

6. State Requirements

State rules vary widely, which is why multi-state employers face the most risk. Use this list to check each state where you have employees:

• Registration: register with the state revenue agency for withholding and the workforce agency for unemployment insurance
• Income tax withholding: most states require it, though a few have no wage income tax, and some require reciprocity forms for cross-border workers
• State unemployment insurance (SUI): rates and wage bases are set by each state and often depend on your claims history
• Disability and family leave programs: some states, including New Jersey, require employer or employee contributions to state programs
• Wage and hour rules: state minimum wage, overtime, meal and rest breaks, and pay frequency
• Paid sick leave: many states require employers to provide it
• Final pay and wage statements: deadlines and content requirements differ by state
• Workplace posters and notices: required postings differ by state

7. Local Requirements

Local rules are the easiest to miss because they are not on federal or state checklists:

• Some cities, counties, and school districts levy income, wage, or payroll taxes that you must withhold or pay
• Some localities set their own minimum wage above the state rate
• Some cities have their own paid leave or scheduling ordinances
• Local taxes can depend on where the employee lives, where they work, or both
• Remote employees can create local obligations in places where you have no office

8. Worker Classification

Whether someone is an employee or an independent contractor determines nearly every other requirement. Employees trigger withholding, payroll taxes, wage laws, and insurance, while contractors generally receive a Form 1099-NEC.

• Agencies look at behavioral control, financial control, and the nature of the relationship
• Some states apply stricter tests than the federal rules
• Misclassification can lead to back taxes, penalties, and wage claims
• Collect a Form W-9 from every contractor before you pay them

9. Recordkeeping and Retention

*Many states require longer retention, so follow the longest period that applies to you.

10. Penalties and Personal Liability

• Late deposits: penalties are tiered and generally range from 2% up to 15% of the underpayment depending on how late the deposit is
• Late or incorrect returns: separate penalties and interest can apply
• Trust fund recovery penalty: responsible individuals can be held personally liable for withheld taxes that are not paid over
• Wage claims: underpaid overtime or minimum wage can mean back pay and additional damages
• Information return penalties: late or wrong W-2s and 1099s carry per-form penalties

11. The Master Payroll Compliance Checklist

At hiring

• ☐ Confirm correct classification as employee or contractor
• ☐ Collect Form W-4, Form I-9, and state withholding forms
• ☐ Submit the new hire report to the state
• ☐ Register for state and local payroll accounts if new to that location

Every pay run

• ☐ Verify hours, overtime, and pay rates
• ☐ Calculate federal, state, and local withholding correctly
• ☐ Provide wage statements as your state requires
• ☐ Deposit taxes on your assigned schedule

Quarterly

• ☐ File Form 941 and state quarterly wage and unemployment reports
• ☐ Reconcile payroll reports to your general ledger and deposits
• ☐ Review changes in state and local rules

Year-end

• ☐ File Form 940, W-2s, W-3, and 1099-NECs by January 31
• ☐ Verify employee addresses and Social Security numbers before issuing forms
• ☐ Update tax rates and wage bases for the new year
• ☐ Archive records for the required retention period

12. Common Mistakes

• Using last year's wage base or rates after January 1
• Missing state or local registrations for remote employees
• Misclassifying exempt employees based on title alone
• Paying contractors without a W-9 on file
• Not reconciling payroll to the books, which hides deposit errors
• Treating payroll as a one-person job with no backup or review
• Ignoring labor in product costing, which skews margins (see Cost of Goods Sold Calculation)

13. How Professional Support Helps

Payroll compliance never stops, and the penalties for mistakes add up quickly. At CashBook Accounting, we help employers with:

• Payroll services covering processing, deposits, filings, and year-end forms
• E-commerce bookkeeping that reconciles payroll to your books every month
• Books clean-up to correct past payroll liabilities and filings
• Tax preparation that ties payroll filings to your returns
• Sales tax services for compliance beyond payroll
• Financial planning & analysis to budget the full cost of each hire
• Financial modeling to plan hiring, and decisions such as buying or leasing equipment for new staff

Prefer in-person help? Read about finding a professional tax expert near you.

14. Frequently Asked Questions

15. Related Articles

Disclaimer: This article is for general informational purposes only and does not constitute legal, tax, or payroll advice. Payroll rates, wage bases, deadlines, and rules change and vary by state and locality. Consult a qualified professional such as the CashBook Accounting team for guidance specific to your business.