New Jersey employers face both federal payroll taxes that apply everywhere and state-specific taxes that add complexity. Understanding which taxes you pay directly versus which ones you simply withhold from employees helps clarify your actual cost and administrative responsibilities.

On the federal side, you’ll pay 6.2% for Social Security and 1.45% for Medicare on every paycheck. You also withhold matching amounts from employees for both. Federal unemployment tax runs 6% on the first $7,000 of wages per employee, though most employers pay just 0.6% after receiving the state credit.

New Jersey adds several employer-paid taxes. Unemployment insurance rates vary based on your business’s experience rating and industry. New employers receive an assigned rate until they build their own history. The 2026 wage base for unemployment is $44,800 per employee, meaning you stop paying UI tax once an employee’s wages exceed that amount for the year.

Employers also pay into the Temporary Disability Insurance fund. This covers benefits when employees can’t work due to non-work-related illness or injury. The employer portion uses the same $44,800 wage base as unemployment insurance. Workforce contributions including the Workforce Development Partnership Fund and Supplemental Workforce Fund are smaller additional employer taxes that fund job training programs. Keeping these straight requires attention to detail and is one reason many business owners rely on professional bookkeeping services to manage the complexity.

Beyond what you pay, you’re responsible for withholding several employee taxes each pay period. Gross Income Tax is New Jersey’s state income tax, withheld based on the employee’s filing status and allowances. Employee Temporary Disability Insurance and Family Leave Insurance are also withheld from employee wages. These employee-side withholdings have a higher wage base of $171,100 for 2026.

Family Leave Insurance provides paid leave for employees caring for family members or bonding with new children. The employee funds this entirely through payroll deductions, but you handle the withholding and remittance to the state.

The filing requirements add another layer. Quarterly reports, annual reconciliations, and timely tax deposits all need to happen on schedule. Missing deadlines triggers penalties and interest. Getting the wage bases wrong means under-withholding or over-withholding, both of which create problems to sort out later.

For businesses managing payroll in-house, tracking all these taxes across multiple employees with different wage levels gets complicated quickly. Full-service payroll handles the calculations, deposits, and filings so you don’t have to track wage bases or remember filing deadlines. The cost is usually less than the time you’d spend managing it yourself and definitely less than the penalties for getting it wrong.