New Jersey employers must file quarterly payroll tax returns on April 30, July 30, October 30, and January 30. These correspond to the first, second, third, and fourth quarters of the year.

Two forms are required each quarter. Form NJ-927 is the employer’s quarterly report that shows total wages paid, taxes withheld, and unemployment insurance contributions. Form WR-30 is the wage reporting form that lists each employee’s wages and withholdings individually. Both must be filed together by the quarterly deadline.

The dates are easy to confuse with federal requirements. Federal Form 941 is due on the last day of the month after each quarter, which means January 31, April 30, July 31, and October 31. New Jersey uses the 30th consistently across all four quarters. Filing on the 31st because you assumed NJ follows federal timing means you filed a day late for three of the four quarters.

Late filings trigger penalties and interest from the state. Even if you made all your tax deposits on time, missing the filing deadline creates problems. The state can assess penalties for late filing separately from penalties for late payment, so staying current on deposits doesn’t protect you from filing penalties.

Full-service payroll includes preparing and submitting these quarterly returns on your behalf. The payroll provider tracks the deadlines, generates the forms from payroll data already in the system, and files them before the due date. You avoid the risk of forgetting a deadline or using the wrong date.

If you handle payroll yourself, put the NJ deadlines on your calendar separately from federal ones. Don’t rely on federal deadline reminders to trigger your NJ filings. The one-day difference on three quarters catches many employers who assume state and federal align.

Working with New Jersey bookkeepers who understand state-specific requirements helps you avoid these timing issues. Payroll compliance involves more than just paying employees on time. Quarterly reporting to both federal and state agencies requires attention to different deadlines and different forms.