Federal withholding tax filing deadlines fall into two tracks that run at the same time: deposit deadlines, which are either monthly or semi-weekly depending on your prior liability, and return deadlines, which are quarterly for Form 941 (April 30, July 31, October 31, and January 31) and annual for Form 940 and W-2s (January 31). Being current on one track does not excuse the other, and the penalties for missing either stack.
Which Deposit Schedule You Are On
Treasury Regulation § 31.6302-1 sorts employers into two deposit categories using a four-quarter lookback period. For 2026 filers, the lookback window runs from July 1, 2024, through June 30, 2025. If your total employment tax during those four quarters was $50,000 or less, you deposit monthly. If it exceeded $50,000, you deposit semi-weekly.1Internal Revenue Service. Publication 15 (2026), (Circular E), Employer’s Tax Guide2Internal Revenue Service. Notice 931 – Deposit Requirements for Employment Taxes
Monthly Deposits
Monthly depositors pool the tax withheld during a calendar month and deposit the total by the 15th of the following month. When the 15th falls on a weekend or federal holiday, the deadline shifts to the next business day.3Internal Revenue Service. Understanding Your CP235 Notice
Semi-Weekly Deposits
Semi-weekly deposits are tied to specific paydays. Pay employees on Wednesday, Thursday, or Friday, and the deposit is due the following Wednesday. Pay on Saturday, Sunday, Monday, or Tuesday, and it is due the following Friday.4Internal Revenue Service. Topic No. 757, Forms 941 and 944 – Deposit Requirements Once the lookback total crosses $50,000, every pay period follows this pattern regardless of the size of the individual payroll.
The Next-Day $100,000 Rule
One rule overrides both schedules. If your business accumulates $100,000 or more in employment tax liability on any single day, you must deposit those funds by the close of the next business day. Hitting the threshold even once also moves a monthly depositor to the semi-weekly schedule for the rest of the calendar year and the following year.4Internal Revenue Service. Topic No. 757, Forms 941 and 944 – Deposit Requirements
Quarterly and Annual Return Deadlines
Deposits move the money. Returns reconcile what you owed against what you sent. The IRS treats them as separate obligations with separate deadlines.
Form 941
Most employers file Form 941 once per quarter to report wages, tips, federal income tax withheld, and both shares of Social Security and Medicare tax. The four deadlines are:
- Q1 (January–March): April 30
- Q2 (April–June): July 31
- Q3 (July–September): October 31
- Q4 (October–December): January 31
When one of these dates lands on a Saturday, Sunday, or legal holiday, the deadline moves to the next business day.5Internal Revenue Service. Topic No. 758, Form 941, Employers Quarterly Federal Tax Return and Form 944, Employers Annual Federal Tax Return Employers who deposited all taxes on time throughout the quarter get an extra 10 calendar days to file. So April 30 becomes May 10, and so on.6Internal Revenue Service. Employment Tax Due Dates
Form 940 and W-2s
Form 940 reports federal unemployment (FUTA) tax and is due January 31 of the year after the reporting period. Depositing all FUTA tax on time pushes the filing deadline to February 10.7Internal Revenue Service. Instructions for Form 940
The same January 31 date covers furnishing W-2 statements to employees and filing those forms with the Social Security Administration.6Internal Revenue Service. Employment Tax Due Dates Employers who withhold federal income tax on nonpayroll payments, such as backup withholding on contractor payments, report it separately on Form 945, also due January 31.
Form 944 for the Smallest Employers
If your total annual liability for Social Security, Medicare, and withheld federal income tax is $1,000 or less, you may qualify to file Form 944 once a year rather than filing quarterly Form 941s.8Internal Revenue Service. Instructions for Form 944 You cannot switch on your own. The IRS must send written notification confirming your eligibility. To request the change, call the IRS between January 1 and April 1, or mail a written request postmarked by March 15. Without a confirmation notice, you continue filing quarterly.9Internal Revenue Service. EO Update: e-News for Charities and Nonprofits
Submitting Payments and Returns on Time
Deposits go through the Electronic Federal Tax Payment System (EFTPS), a free Treasury service. You log in with your EIN, a PIN, and an internet password, then schedule a payment from your business bank account. The system returns an acknowledgment number, which is your proof of the transaction.10Internal Revenue Service. EFTPS: The Electronic Federal Tax Payment System Enrollment can take up to five business days, so new employers should not wait until the first deposit is due to sign up.
Payments must be scheduled by 8 p.m. Eastern the day before the due date to count as timely. You can schedule up to 365 days in advance, which helps monthly depositors automate.11Electronic Federal Tax Payment System. Welcome to EFTPS
Paper returns can still be mailed, though electronic filing is the standard. If you mail, use certified mail or another service that provides a postmark receipt. That receipt is your proof of timely filing if the IRS later claims the return arrived late.12Taxpayer Advocate Service. New U.S. Postal Service Rules Could Affect Whether Your Tax Filing Is Considered On Time The correct mailing address depends on your business location and whether you are including payment, so check the instructions for the specific form.
Penalties for Missing a Deadline
Late deposits and late returns are separate violations. The penalties stack.
Late Deposits
The failure-to-deposit penalty uses four tiers keyed to how many calendar days the deposit is overdue:
- 1–5 days late: 2% of the unpaid deposit
- 6–15 days late: 5%
- More than 15 days late: 10%
- Still unpaid more than 10 days after the IRS’s first notice demanding payment: 15%
The tiers do not add up. Sixteen days late is a 10% penalty, not 17%. Ignoring the follow-up notice is what pushes it to 15%.13Internal Revenue Service. Failure to Deposit Penalty
Late W-2s
W-2 forms filed late with the Social Security Administration carry a per-return penalty. For returns due in 2026:
- Up to 30 days late: $60
- 31 days late through August 1: $130
- After August 1 or never filed: $340
- Intentional disregard: $680
Because the penalty is per return, an employer with 50 employees who misses the W-2 deadline by two months faces $6,500 before interest.14Internal Revenue Service. Information Return Penalties
Reasonable Cause Relief
The IRS evaluates reasonable cause on a case-by-case basis. Fires, natural disasters, serious illness, and system failures that blocked a timely electronic filing may qualify. Not knowing the deadline, simple mistakes, and relying on a tax professional who missed the date generally do not. The IRS holds the employer responsible regardless of who handles the paperwork.15Internal Revenue Service. Penalty Relief for Reasonable Cause
When the Penalty Follows You Personally
Federal income tax withheld from paychecks and the employee’s share of Social Security and Medicare are “trust fund” taxes. The money belongs to the employee and the government, not the business. If the business fails to turn those funds over, the IRS can assess the Trust Fund Recovery Penalty against any individual who was responsible for collecting and paying them and who willfully failed to do so.16Internal Revenue Service. Trust Fund Recovery Penalty
The penalty is 100% of the unpaid trust fund taxes, plus interest. “Responsible person” can include corporate officers, partners, sole proprietors, or any employee with authority over financial decisions. “Willfully” does not require intent to break the law. It means you knew the taxes were due and paid other business expenses instead. The IRS can pursue multiple responsible persons for the same liability, and the penalty follows individuals even after the business closes or files for bankruptcy.16Internal Revenue Service. Trust Fund Recovery Penalty
State Withholding Deadlines Run Separately
Most states impose their own withholding tax obligations that run parallel to the federal system. Registration with the state department of revenue is often triggered by hiring your first employee. Deposit frequency and filing deadlines vary. Some states mirror the federal quarterly schedule, others require monthly or semi-monthly remittances depending on payroll size. State penalties operate independently, so a single late payroll can generate assessments from both levels of government at once. A handful of states have no income tax and no state withholding requirement, but federal obligations apply regardless of location. Check directly with your state revenue agency for the specific calendar that applies to you.