Due Date Adjustments for Federal Withholding

Monthly Payroll & Nonpayroll Deposits (August 17): Due Date Adjustments for Federal Withholding (FICA & Income Tax)

Item	Details
Purpose	Deposit of federal income tax withheld and FICA (Social Security/Medicare) tax on payroll, plus nonpayroll withholding (e.g., pensions, gambling winnings) for monthly depositors.
Issuing Authority	Internal Revenue Service (IRS), via the Electronic Federal Tax Payment System (EFTPS).
Average Processing Time	Deposits post same-day to next-business-day through EFTPS; no manual processing delay if scheduled correctly.
Prerequisites	Active EFTPS enrollment, correct deposit schedule classification (monthly), and accurate liability calculation for the covered month.

What Is the August 17 Deposit Deadline and When Is It Mandatory?

Monthly depositors must deposit federal income tax withheld and both employer and employee shares of FICA tax for wages paid in July by the 15th day of the following month. Because the standard due date, August 15, 2026, falls on a weekend, the IRS deposit rule automatically moves the deadline to the next business day: Monday, August 17, 2026.

This deadline is mandatory for any employer classified as a monthly depositor based on the IRS lookback period, and it also applies to nonpayroll withholding deposits, such as backup withholding, pension distributions, and certain gambling-winnings withholding reported on Form 945.

Step-by-Step Process: Meeting the August 17 Deadline

1. Confirm your deposit schedule classification

• Review your lookback-period tax liability to confirm whether you are a monthly or semi-weekly depositor for 2026.
• Monthly depositors report July liability by August 17; semi-weekly depositors follow a different multi-date schedule and are not affected by this specific due date.

2. Calculate total liability for July payroll and nonpayroll withholding

• Sum federal income tax withheld from employee wages paid in July.
• Add employer and employee FICA (Social Security and Medicare) tax on those wages.
• Separately total any nonpayroll withholding due for Form 945 filers, since payroll and nonpayroll deposits are tracked under different tax liability categories in EFTPS.

3. Submit the deposit through EFTPS by August 17, 2026

• Log in to EFTPS and schedule the payment at least one business day before the due date, since EFTPS requires payments to be scheduled by 8 p.m. ET the day before the deadline.
• Select the correct tax form (Form 941 for payroll, Form 945 for nonpayroll) and tax period when submitting.
• Save the EFTPS confirmation number as proof of timely deposit.

3 Common Reasons for Deposit Rejection or Penalty and How to Fix Them

1. Scheduling the payment too late in EFTPS

EFTPS payments scheduled after the cutoff time will post on the next business day, which can trigger a late-deposit penalty even if you "submitted" on the due date. Always schedule deposits at least one business day in advance to guarantee same-day or next-day posting before the deadline.

2. Mixing payroll and nonpayroll liabilities under the wrong form code

Depositing Form 945 nonpayroll withholding under a Form 941 payroll code (or vice versa) can cause the IRS to record the deposit against the wrong liability, triggering a mismatch notice. Verify the tax form selection in EFTPS matches the liability type before submitting.

3. Miscalculating the deposit due to an incorrect depositor classification

Employers who exceeded the lookback threshold but continued using a monthly schedule risk underpayment penalties for missed semi-weekly deposit dates. Recheck your depositor status each calendar year using the IRS lookback period and adjust your deposit calendar accordingly.

Compliance automation tip: Missed or mistimed EFTPS deposits are a leading cause of IRS penalty notices for small and mid-sized employers. Automated payroll tax compliance platforms such as QuickBooks Payroll or Gusto can calculate FICA and withholding liabilities, schedule EFTPS deposits automatically, and flag depositor-classification changes, helping ensure the August 17 deadline and future due dates are never missed.

Frequently Asked Questions

Why did the deposit deadline move from August 15 to August 17?

August 15, 2026 falls on a Saturday. Under IRS deposit rules, when a due date falls on a Saturday, Sunday, or legal holiday, the deadline shifts to the next business day, which is Monday, August 17, 2026.

Does this deadline apply to semi-weekly depositors?

No. Semi-weekly depositors follow a different schedule tied to the day wages are paid within the week, with deposits generally due the following Wednesday or Friday. The August 17 date applies specifically to monthly depositors reporting July liabilities.

What penalty applies if I miss the August 17 deposit deadline?

The IRS assesses failure-to-deposit penalties on a sliding scale, generally starting at 2% for deposits 1–5 days late and increasing up to 15% for deposits made more than 10 days after an IRS delinquency notice. Depositing as soon as possible after a missed date reduces the penalty tier that applies.