Payroll tax deposit schedules: where the IRS penalty starts

Early this month the IRS marked National Payroll Week with a reminder aimed at employers, IR-2026-105, and one line in it deserves more attention than it gets: "Federal tax deposits must be made by electronic funds transfer." That sentence is about the how. The harder question for most closely held companies is the when, and the when is governed by your payroll tax deposit schedule. Get the schedule wrong and the failure-to-deposit penalty starts accruing before anyone in the building knows a deadline passed.

We see the same handful of beliefs about deposit timing in nearly every payroll tax matter that reaches our practice. Some are half right. Some are exactly backwards. Below we check six of them against IRS Notice 931 (the deposit-requirements notice, revised September 2026) and the IRS's own failure-to-deposit penalty page. Everything here is federal law; Oklahoma withholding runs on its own separate clock.

How a payroll tax deposit schedule is assigned

Before the myths, the mechanics. Every employer filing Form 941 is either a monthly schedule depositor or a semiweekly schedule depositor for a given calendar year. The label comes from a "lookback period," which for Form 941 filers is the four quarters beginning July 1 and ending June 30 of the year before the year in question. Report $50,000 or less of employment tax liability in that window and you're monthly. Report more than $50,000 and you're semiweekly.

Annual filers (Forms 943, 944, 945, and CT-1) use a different lookback: the calendar year before the previous year. New employers are treated as having zero liability for the quarters before they started, so they begin as monthly depositors.

That's the whole framework. Almost every penalty we see traces back to a misunderstanding of one of its parts.

Belief one: "We pay the payroll taxes when we file the 941"

This one is true for a narrow slice of employers and dangerously false for everyone else.

Notice 931 does allow an employer to pay its Form 941 liability with the return instead of depositing, but only if the total tax liability for either the current quarter or the preceding quarter is less than $2,500, and only if no $100,000 next-day obligation arose during the current quarter. A company with two or three employees on modest wages may fit. A company with a dozen employees almost never does.

Here is where the belief does its damage. A business starts small, qualifies for the pay-with-the-return option, and builds its habits around it. Payroll grows. Nobody revisits the question. The first quarter over $2,500 is the first quarter of late deposits, and the return that gets filed on time is the same return that reports the liability the IRS will now penalize.

Reality: the pay-with-the-return option is a small-employer accommodation with a hard dollar test, not a default.

Belief two: "Our schedule is based on what we're paying now"

It isn't, and this is the belief that catches growing companies.

Your schedule for 2027 depends on what you reported for July 1, 2025 through June 30, 2026. Notice 931 spells out that window exactly. The number that matters is already fixed by the time the calendar year starts, and it reflects a period that ended six months earlier.

Here is a practitioner's observation. The employer that crossed $50,000 of reported liability during a lookback window that closed last June became a semiweekly depositor on January 1 and, in our experience, often doesn't know it. The payroll provider may have caught it. The bookkeeper may have assumed the provider caught it. Nobody pulled the four Forms 941 and added them up. The deposits keep landing on the 15th of the following month, which under the semiweekly rules can be several weeks late, and the penalty notices arrive the following year describing a schedule the owner never heard of.

Reality: the lookback period is backward-looking by design. If your company is on a growth curve, the question to ask each fall is what the four quarters ending June 30 added up to, because that sum decides next year's rules.

Belief three: "Monthly means we have until the end of the month"

Under the monthly schedule, taxes on wages paid during a calendar month are due by the 15th day of the following month. Not the last day. The 15th.

Semiweekly depositors have a different rhythm entirely, tied to the day wages are paid. For wages paid Wednesday, Thursday, or Friday, the deposit is due the following Wednesday. For wages paid Saturday through Tuesday, the deposit is due the following Friday. Notice 931 promises semiweekly depositors at least three business days after the close of the semiweekly period, and a legal holiday inside that window adds a business day. The holidays that count are the ones observed in the District of Columbia, which is not the same list every employer's bank uses.

Two smaller rules soften the edges. A deposit due on a day that isn't a business day is timely if made by the close of the next business day. And because deposits must go through electronic funds transfer, the EFTPS cutoffs are part of the deadline: a same-day payment of $1 million or less has to be submitted before 3:00 p.m. Eastern on a business day, and an amount over $1 million has to be submitted by 8:00 p.m. Eastern the day before it's due. Central time employers lose an hour on both.

Reality: "monthly" and "semiweekly" are labels for deposit rhythms, not descriptions of how long you have. The actual due date depends on the schedule, the payday, the calendar, and the transfer cutoff.

Belief four: "The $100,000 next-day rule only applies to large companies"

The next-day rule is triggered by accumulation, not by headcount. Notice 931 puts it plainly: accumulate a tax liability of $100,000 or more on any day during a deposit period and you must deposit it by the close of the next business day, whether you're a monthly or a semiweekly depositor.

A mid-sized company with ordinary biweekly payroll may never come near that figure on a single day. The same company running year-end bonuses or a retention payout after an acquisition can cross it in one payroll run. That's the practitioner's wrinkle: the rule is most likely to surprise the employer for whom it's least routine.

The consequence outlasts the deposit. A monthly schedule depositor that accumulates $100,000 or more on any day becomes a semiweekly depositor the next day and stays semiweekly for the rest of that calendar year and the following calendar year. One bonus cycle can rewrite the company's deposit calendar for up to two years.

Reality: the next-day rule watches the size of the liability on a single day. If a payroll run is going to be unusual, the deposit timing for that run should be settled before the wages go out, not after.

Belief five: "A late deposit is a small penalty, and it's a one-time thing"

The failure-to-deposit penalty is a percentage of the unpaid deposit, and the percentage rises with the number of calendar days late. The IRS penalty page lists the tiers:

• One to five days late: 2% of the unpaid deposit.
• Six to fifteen days late: 5%.
• More than fifteen days late: 10%.
• Still unpaid more than ten days after the first IRS notice demanding payment, or on the day a notice for immediate payment is received: 15%.

Those tiers don't stack. A deposit more than fifteen days late draws the 10% tier, not 2% plus 5% plus 10%. That's the taxpayer-favorable half of the rule. The other half is that interest runs on the penalty, and the IRS states that by law it cannot remove or reduce interest unless the underlying penalty is removed or reduced.

Now the part that makes this bigger than it looks. The 15% tier is a collection-stage event. It doesn't apply because the deposit was late; it applies because the deposit was late and the first notice went unanswered. By the time an employer is paying 15%, the file has usually moved from a timing problem to an unpaid-balance problem, and unpaid employment taxes are where the trust fund recovery penalty under IRC §6672 puts the withheld portion on the personal balance sheet of the people who ran the company.

One more mechanical point, drawn from the Internal Revenue Manual's chapter on this penalty. For periods after December 31, 2001, the IRS applies deposits to the most recently ended deposit period within the return period, under Revenue Procedure 2001-58. An employer that skipped one deposit and then kept depositing on time can find that each later deposit is credited to its own period, leaving the original gap open and aging through the tiers. The IRM points to a separate allocation job aid for the details, so treat this as the general rule rather than the whole rule.

Reality: the penalty is modest at 2% and consequential at 15%, and a single missed deposit can sit at the front of the queue while the company thinks it's current.

Belief six: "Any shortfall means a penalty, and once assessed there's nothing to do"

Both halves are wrong, and the first half is wrong in the employer's favor.

Notice 931 requires 100% of the liability to be deposited on time, but it also carries an accuracy-of-deposits rule. No penalty applies to a shortfall that doesn't exceed the greater of $100 or 2% of the taxes otherwise required to be deposited, provided the shortfall is made up by the deadline. For monthly depositors, that deadline is the return due date for the period. For semiweekly depositors, it's the earlier of the first Wednesday or Friday on or after the 15th of the month following the shortfall month, or the return due date. A rounding error or a corrected payroll run inside that tolerance is a make-up deposit, not a penalty.

As for the second half, an assessed failure-to-deposit penalty is not the end of the conversation. The IRS's penalty-relief pages list the failure-to-deposit penalty under IRC §6656 among those eligible for first-time abatement, which turns on a clean compliance history: the same return type filed on time for the prior three years (or twelve consecutive quarters), with no penalty assessed in that stretch other than one later abated for reasonable cause or IRS error. Outside that path, the IRS may remove or reduce the penalty where the employer acted in good faith and can show reasonable cause. The dispute route is procedural rather than adversarial: call the number on the notice or write to the address on it, identifying the penalty and the reasons. We've written before about how first-time abatement and reasonable cause fit together. One timing note from the same IRS page: first-time abatement, which the employer has to request, applies to 2025 tax year and 2026 quarterly returns and all earlier periods, while a newer automatic exemption from penalty, which the IRS says begins in summer 2026 and uses the same three-year clean-history test, is meant to apply to those periods and everything after them without a request. Which path a given late deposit falls under depends on the period, and that is worth confirming before a relief request goes out.

Reality: small, promptly corrected shortfalls are tolerated by rule, and assessed penalties have a defined relief path that rewards employers who otherwise kept clean records.

Where the state fits

Everything above is federal. Oklahoma employers also withhold state income tax on a separate schedule with its own remittance rules and its own personal-liability exposure, which we cover in our piece on Oklahoma withholding compliance.

When the deposit question becomes a lawyer's question

A missed or misclassified deposit is, at first, an accounting problem, and a good payroll provider or CPA fixes most of them. The line we watch for is the first IRS notice demanding payment on a deposit that hasn't been made. From that letter forward, the penalty tier is about to move to 15%, interest is compounding on the penalty, and the unpaid withheld taxes are becoming a personal question for owners and officers rather than a company one. Deposit schedules are also a standard diligence item in payroll tax problems generally, because a buyer or lender who finds a late-deposit history will price it.

If your company has outgrown its deposit schedule, tripped the next-day rule on a bonus run, or received a failure-to-deposit notice it can't reconcile, that's the point where we'd want to look at the notices and the deposit history together. You can reach our practice through the contact page or through the Oklahoma City office. A conversation now, while the penalty is still a percentage, tends to be far cheaper than one after it becomes personal.

This article is general information about Oklahoma, Texas, and federal law, not legal advice, and it does not create an attorney-client relationship. Facts matter; talk to a lawyer about yours.