Quarterly payroll tax filing comes down to two main obligations: federal Form 941 and your state unemployment report. If you’re running a business in Tennessee, the process is simpler than most states because there’s no state income tax withholding to deal with. But there are still deadlines that carry real penalties if you miss them.

Form 941 is the big one. You file it with the IRS every quarter to report total wages paid, federal income tax withheld from employees, and the employer and employee portions of Social Security and Medicare taxes. The due dates are April 30, July 31, October 31, and January 31, each covering the prior three months. If the due date falls on a weekend or holiday, you have until the next business day.

An important distinction that trips up a lot of business owners is that filing Form 941 and depositing payroll taxes are two separate things. You don’t wait until the end of the quarter to send the IRS the money. Depending on your total tax liability, you deposit either monthly or semi-weekly throughout the quarter. The 941 filing is essentially a reconciliation of what you already deposited against what you owe. If there’s a shortfall, you pay it with the return. If you’ve been depositing on time, the filing itself is just reporting.

For Tennessee specifically, you file a quarterly wage report with the Tennessee Department of Labor and Workforce Development. This reports wages for each employee and calculates your state unemployment tax. New employers receive a standard rate that adjusts over time based on your claims history. This report is due by the end of the month following the quarter, same schedule as Form 941.

Federal unemployment tax (FUTA) works differently. Form 940 is an annual filing, but if your FUTA liability exceeds $500 in any quarter, you need to make a deposit by the end of the following month. Most small employers with just a few employees won’t hit that threshold every quarter, but it’s worth tracking.

The actual filing can happen electronically through the IRS EFTPS system for deposits and e-file for the 941 itself. Tennessee’s unemployment system also has an online portal. If you use payroll software like QuickBooks, Gusto, or ADP, these filings and deposits are typically handled automatically. That’s one of the biggest reasons small businesses use full-service payroll instead of doing it manually.

Common mistakes include depositing late because you confused filing with depositing, misclassifying workers as contractors when they’re employees, and not reconciling your quarterly 941 totals against your annual W-2s and W-3. These mismatches trigger IRS notices that take time and money to resolve.

If you’re handling payroll yourself, set calendar reminders for deposit and filing deadlines well in advance. If you’re growing and the complexity is eating into your time, consider whether CFO services for small businesses or outsourced payroll might free you up to focus on running the business instead of chasing tax deadlines. The penalties for getting this wrong accumulate quickly, and they’re almost always more expensive than getting help.