Federal payroll tax filing & payments glossary with 22 key terms defined

Informational disclaimer: This glossary is educational content, not tax or legal advice. Consult IRS Publication 15 (Circular E), IRS.gov, and a qualified tax advisor for guidance specific to your organization.

Federal payroll tax filing and payments require employers to remit withheld taxes via EFTPS, file Forms 940 and 941 on IRS-mandated schedules, and confirm IRS receipt of each deposit. For post-acute and long-term care providers, mastering this vocabulary — deposit frequency, lookback period, e-file thresholds, and EFTPS cutoff times — is the foundation of audit-ready payroll compliance. This glossary defines 22 essential terms in federal payroll tax filing and electronic remittance, organized across five compliance stages: Foundational Concepts, EFTPS Mechanics, Deposit Schedules & Deadlines, Forms & E-File Requirements, and Payment Verification & Compliance. Each definition is scoped to the high-volume, audit-sensitive payroll environment of post-acute and long-term care providers. The 22 terms are grouped into five stage-ordered categories that mirror the federal payroll tax compliance lifecycle. Each stage's vocabulary builds on the one before it, so the categories are best read in order. Category 1: Foundational Concepts (4 terms). Establishes the regulatory framework and core tax types that all downstream deposit and filing terms depend on. Without a working grasp of federal payroll tax, FICA, federal income tax withholding, and the employer tax match, later-stage vocabulary — deposit schedules, quarterly returns, penalty tiers — has no anchor. Category 2: EFTPS Mechanics (5 terms). Defines the federal deposit portal's enrollment, operation, and confirmation infrastructure — the primary remittance channel for all payroll tax deposits. Every dollar of federal payroll tax an employer owes moves through EFTPS, so its enrollment steps, credentials, cutoff timing, and deposit mechanics are core operational vocabulary. Category 3: Deposit Schedules & Deadlines (5 terms). Covers the IRS rules that determine when deposits must be made — the highest-risk compliance stage for post-acute providers managing variable shift payrolls. Lookback period, monthly and semiweekly depositor status, the next-day $100,000 rule, and the underlying due-date logic all live here. Category 4: Forms & E-File Requirements (5 terms). Defines the specific IRS return forms and electronic filing mandates that govern quarterly and annual payroll tax reporting. Forms 941 and 940, FUTA tax, the IRS e-file mandate, and the authorized e-file provider role reconcile deposited cash against actual liability on the IRS's schedule. Category 5: Payment Verification & Compliance (3 terms). Covers the confirmation, audit-trail, and penalty concepts that close the compliance loop after a deposit or filing is submitted. The EFTPS payment confirmation number, IRS payment posting, and the failure-to-deposit penalty define what "done" looks like — and what happens when it isn't.

Foundational concepts

Before deposits and filings comes classification: what the tax is, who pays which portion, and which IRS reference governs the rates.

Federal payroll tax

Federal payroll tax is the collective term for the employer-withheld and employer-matched taxes remitted to the IRS on employee wages, comprising federal income tax withholding, Social Security tax (6.2% each from employer and employee), and Medicare tax (1.45% each), with an Additional Medicare Tax of 0.9% on wages above $200,000. IRS Publication 15 (Circular E) is the canonical employer reference for federal payroll tax rates and rules. Viventium's payroll engine calculates and tracks all three federal payroll tax components automatically for post-acute and long-term care employers, helping shift-heavy home health, hospice, and skilled nursing payrolls stay aligned with Publication 15. For a broader post-acute walk-through of these components, see the Federal Payroll Tax Overview for Post-Acute Providers (anchor text: federal payroll tax). Related terms: FICA tax, federal income tax withholding, Form 941, EFTPS.

FICA tax

FICA tax refers to the combined Social Security and Medicare taxes mandated by the Federal Insurance Contributions Act, split equally between employer and employee — each paying 6.2% for Social Security (up to the annual wage base) and 1.45% for Medicare, with no wage cap on the Medicare portion. The 2025 Social Security wage base is $176,100 (IRS Rev. Proc. 2024-40). Once an employee's year-to-date Social Security wages hit that ceiling, the 6.2% employer and employee Social Security withholding stops for the rest of the calendar year. Medicare continues on every dollar earned, with the Additional Medicare Tax applying to employee wages above $200,000. Related terms: federal payroll tax, Additional Medicare Tax, Form 941, employer tax match.

Federal income tax withholding

Federal income tax withholding is the amount an employer deducts from each employee's paycheck and remits to the IRS on the employee's behalf, calculated using the employee's Form W-4 elections and the IRS withholding tables in Publication 15-T. Employees may update Form W-4 at any time; employers must implement changes by the start of the first payroll period ending 30 days after receipt. That timing matters for providers processing frequent status changes across variable-hour caregivers. Viventium applies IRS Publication 15-T withholding tables automatically, reducing manual calculation risk for post-acute providers with complex pay structures. Related terms: Form W-4, federal payroll tax, Form 941, EFTPS.

Employer tax match

Employer tax match is the portion of FICA taxes paid entirely by the employer — equal to the employee's Social Security and Medicare withholding — representing an additional 7.65% of taxable wages (6.2% Social Security + 1.45% Medicare) that the employer remits alongside withheld employee taxes. The employer tax match is deposited via EFTPS together with withheld employee taxes as a single combined remittance, tied to the same deposit schedule and Form 941 quarterly return. For high-headcount operators, the match is often a substantial payroll tax accrual, so the general ledger and EFTPS confirmations should be reconciled every deposit cycle. Related terms: FICA tax, federal payroll tax, EFTPS, Form 941.

EFTPS mechanics

EFTPS is the payment system. Every federal payroll tax dollar flows through it, so enrollment, credentials, cutoff timing, and deposit mechanics are core terms.

EFTPS (electronic federal tax payment system)

EFTPS is the U.S. Treasury's free online portal through which employers make all federal tax deposits — including payroll tax remittances for Forms 941 and 940 — by scheduling ACH debit transfers from their bank account to the IRS, with enrollment required before the first deposit can be initiated. EFTPS enrollment takes up to 5 business days to receive a PIN by mail; employers should enroll before their first deposit due date. Viventium integrates with EFTPS workflows so post-acute payroll teams can reconcile scheduled deposits directly within their HCM platform. For a step-by-step walk-through, see How to Use EFTPS for Payroll Tax Deposits (anchor text: EFTPS deposit process). Related terms: EFTPS PIN, EFTPS cutoff time, federal tax deposit, ACH debit.

EFTPS enrollment

EFTPS enrollment is the one-time registration process through which an employer establishes an account at eftps.gov using their EIN, bank routing number, and bank account number, then receives a PIN by U.S. mail within 5 business days to activate online deposit access. Employers who receive an IRS notice to use EFTPS must enroll within the timeframe specified in the notice, typically before the next deposit due date. For new agencies and acquired locations, enrollment belongs on the go-live checklist alongside EIN registration and state unemployment setup. It isn't optional, and it can't be rushed once the PIN mail clock starts. Related terms: EFTPS, EIN, federal tax deposit, EFTPS PIN.

EFTPS PIN

An EFTPS PIN is the 4-digit personal identification number mailed by the U.S. Treasury to an employer's address of record upon EFTPS enrollment, required alongside the employer's EIN and internet password to authenticate and initiate federal tax deposits through the EFTPS portal. Lost PINs can be re-requested at eftps.gov or by calling 1-800-555-4477; a replacement PIN arrives within 5–7 business days. If the PIN goes missing the week a deposit is due, the employer needs a backup plan — such as a same-day wire through the bank's federal tax payment service — to avoid a late deposit. Related terms: EFTPS enrollment, EFTPS, EIN, EFTPS cutoff time.

EFTPS cutoff time

EFTPS cutoff time is the 8:00 PM ET daily deadline by which an employer must schedule a federal tax deposit for it to be credited to the IRS on that calendar day — deposits initiated after 8:00 PM ET are processed the following business day, which can trigger a late-deposit penalty if the due date has passed. The 8:00 PM ET cutoff applies to same-day scheduling; deposits can also be scheduled up to 365 days in advance. Missing this cutoff is the single most common cause of late-deposit penalties for employers who initiate payments on the due date. Viventium alerts post-acute payroll teams to upcoming EFTPS deposit deadlines, reducing the risk of missing the 8:00 PM ET cutoff on high-volume payroll days. For deeper coverage of due-date mechanics, see EFTPS Deposit Due Dates and Cutoff Times (anchor text: EFTPS cutoff time rules). Related terms: EFTPS, deposit due date, semiweekly depositor, federal tax deposit.

Federal tax deposit (FTD)

A federal tax deposit is the electronic remittance of accumulated payroll tax liabilities — withheld federal income tax plus employer and employee FICA taxes — made through EFTPS on the IRS-mandated schedule, replacing the paper coupon (Form 8109) system that was discontinued in 2011. All employers are required to use EFTPS for federal tax deposits; paper coupon deposits are no longer accepted by the IRS. A deposit is a payment event, not a filing event. It moves cash to the Treasury on the employer's schedule and is separate from the quarterly Form 941 return that reconciles deposits against liability. Related terms: EFTPS, deposit schedule, monthly depositor, semiweekly depositor.

Deposit schedules & deadlines

This is a high-risk stage for providers running variable shift payrolls. Whether an employer is monthly or semiweekly, and whether a single spike triggers the next-day rule, determines every deposit deadline for the year.

Lookback period

The lookback period is the 12-month IRS measurement window — July 1 through June 30 of the year preceding the current tax year — used to determine an employer's deposit frequency: employers whose total Form 941 tax liability during the lookback period was $50,000 or less are monthly depositors; those above $50,000 are semiweekly depositors. New employers with no lookback period history default to monthly depositor status for their first calendar year. Because deposit frequency is set once and applies for the whole year, the lookback calculation should be reviewed each fall, well before January's first deposit. Viventium calculates each client's lookback period liability automatically, flagging deposit-frequency changes before the new tax year begins. For a full walk-through, see How to Determine Your IRS Payroll Tax Deposit Schedule (anchor text: lookback period). Related terms: monthly depositor, semiweekly depositor, deposit schedule, Form 941.

Monthly depositor

A monthly depositor is an employer whose total Form 941 tax liability during the lookback period was $50,000 or less, requiring payroll tax deposits to be made by the 15th of the month following the month in which wages were paid — for example, January payroll taxes are due February 15. Monthly depositor status is reassessed annually based on the prior year's lookback period; employers must switch to semiweekly if their liability exceeds $50,000. Growing home care agencies and expanding assisted living operators can cross the threshold mid-lookback and not realize it until the following January, causing subsequent deposits to be late. Related terms: lookback period, semiweekly depositor, deposit due date, EFTPS.

Semiweekly depositor

A semiweekly depositor is an employer whose lookback period Form 941 tax liability exceeded $50,000, requiring payroll tax deposits within 3 business days of each payday — Wednesday or Thursday paydays are due the following Monday; Friday, Saturday, or Sunday paydays are due the following Wednesday. Semiweekly depositors who also accumulate $100,000 or more in liability on any single day must deposit by the next business day under the One-Day Rule. Post-acute and long-term care providers with large shift-based workforces frequently qualify as semiweekly depositors; Viventium's deposit scheduling tools are built to handle the 3-business-day window across variable pay cycles. Related terms: lookback period, One-Day Rule, monthly depositor, EFTPS cutoff time.

One-day rule (next-day deposit rule)

The One-Day Rule is the IRS requirement that any employer — regardless of normal deposit frequency — must deposit accumulated payroll tax liability by the next business day whenever that liability reaches $100,000 or more on any single day during a deposit period. Once an employer triggers the One-Day Rule, they become a semiweekly depositor for the remainder of the current calendar year and the following calendar year. For multi-location skilled nursing and hospice operators, a large bonus run, retro pay adjustment, or acquisition-related payroll can push a single day's liability past the $100,000 threshold. Model the run before it posts. Related terms: semiweekly depositor, deposit due date, EFTPS cutoff time, federal tax deposit.

Deposit due date

A deposit due date is the IRS-mandated calendar date by which a federal tax deposit must be credited to the IRS — determined by the employer's deposit frequency (monthly or semiweekly) and adjusted when the due date falls on a weekend or federal holiday, in which case the deposit is due the next business day. The IRS provides a Deposit Schedule, Lookback Period, and Tax Liability table in Publication 15 (Circular E) updated annually. Viventium surfaces deposit due dates within the payroll workflow so post-acute finance teams can plan EFTPS initiations well before the 8:00 PM ET cutoff. For the year-by-year calendar, see EFTPS Deposit Due Dates and Cutoff Times (anchor text: deposit due date calendar). Related terms: EFTPS cutoff time, monthly depositor, semiweekly depositor, One-Day Rule.

Forms & e-file requirements

Deposits move cash. Forms reconcile the cash to actual liability. Five terms cover the quarterly and annual returns and the e-file mandate that governs how they're transmitted.

Form 941 (employer's quarterly federal tax return)

Form 941 is the IRS quarterly return filed by most employers to report total wages paid, federal income tax withheld, and the employer and employee shares of Social Security and Medicare taxes for each calendar quarter — due by the last day of the month following the close of each quarter (April 30, July 31, October 31, January 31). If all taxes were deposited in full and on time, the IRS grants a 10-day filing extension beyond the standard due date. Viventium generates pre-populated Form 941 data from payroll records, reducing manual entry errors for post-acute providers filing quarterly returns. For the electronic filing walk-through, see How to File Form 941 Electronically (anchor text: Form 941 e-file). Related terms: Form 940, IRS e-file, EFTPS, federal payroll tax.

Form 940 (employer's annual federal unemployment tax return)

Form 940 is the IRS annual return filed by employers to report and pay Federal Unemployment Tax Act (FUTA) tax — a 6.0% employer-only tax on the first $7,000 of each employee's wages — due by January 31 of the following year, with a deposit required by January 31 if the annual FUTA liability exceeds $500. Most employers qualify for a FUTA tax credit of up to 5.4% for timely state unemployment tax payments, reducing the effective FUTA rate to 0.6%. That credit depends on state unemployment being paid on time, so state and federal unemployment compliance should be managed on one calendar. Related terms: FUTA tax, Form 941, IRS e-file, EFTPS.

FUTA tax (federal unemployment tax)

FUTA tax is the employer-only federal tax imposed under the Federal Unemployment Tax Act at 6.0% on the first $7,000 of each employee's annual wages, used to fund the federal unemployment insurance system — reported annually on Form 940 and deposited via EFTPS when quarterly liability exceeds $500. Home care and home health employers with high employee turnover may reach the $7,000 per-employee wage base quickly, making FUTA liability front-loaded in Q1. High-turnover operators often owe much of their annual FUTA in the first quarterly deposit, and finance teams should model that cash timing before the January close. Related terms: Form 940, EFTPS, federal tax deposit, employer tax match.

IRS e-file (electronic filing)

IRS e-file refers to the electronic submission of federal tax returns — including Forms 940 and 941 — through IRS-authorized software or an authorized e-file provider, replacing paper mail filing and providing the filer with an electronic acknowledgment of IRS receipt, typically within 24–48 hours. IRS final regulations effective January 1, 2024 require employers who filed more than 10 information returns in the prior year to e-file Forms 940 and 941. That threshold is aggregated across return types (W-2, 1099, and others), which includes many multi-location operators. Viventium supports IRS e-file submission for Forms 940 and 941 directly from the platform, eliminating the need for post-acute payroll teams to use separate third-party e-file software. For the full rule, see IRS E-File Requirements for Forms 940 and 941 (anchor text: IRS e-file mandate). Related terms: Form 941, Form 940, authorized e-file provider, IRS acknowledgment.

Authorized e-file provider

An authorized e-file provider is a tax software company or payroll service provider that has been approved by the IRS to electronically transmit Forms 940, 941, and other federal returns on behalf of employers — subject to IRS e-file program requirements and annual renewal of their provider status. Employers can verify authorized e-file provider status using the IRS e-file provider locator at irs.gov/efile. Viventium operates as an authorized payroll platform that facilitates e-file submission for post-acute clients, handling IRS transmission and acknowledgment tracking within the HCM workflow. Related terms: IRS e-file, Form 941, Form 940, IRS acknowledgment.

Payment verification & compliance

A deposit isn't finished when the ACH debit posts. Three terms close the loop: the confirmation number, the IRS posting event, and the penalty structure for gaps in that process.

EFTPS payment confirmation number

An EFTPS payment confirmation number is the unique reference number generated by the EFTPS system upon successful scheduling of a federal tax deposit, serving as the employer's primary proof of timely payment initiation and the starting point for any IRS inquiry or audit trace regarding that deposit. Confirmation numbers can be retrieved from EFTPS payment history online at eftps.gov for up to 16 months after the deposit date. Beyond that window, the employer's own records are the only source. Viventium advises post-acute payroll teams to retain EFTPS confirmation numbers in payroll records for a minimum of 4 years — the IRS standard audit lookback window. Related terms: EFTPS, IRS payment posting, federal tax deposit, failure-to-deposit penalty.

IRS payment posting

IRS payment posting is the process by which the IRS records a received federal tax deposit or return payment to the employer's tax account — typically occurring within 1–3 business days of an EFTPS deposit, after which the payment is visible in the employer's IRS Online Account and on IRS transcripts. Employers can verify posting by checking IRS Online Account at irs.gov/account or by calling the IRS Business & Specialty Tax Line at 1-800-829-4933. When a confirmation exists but posting hasn't happened after 3 business days, call rather than redeposit. Related terms: EFTPS payment confirmation number, IRS Online Account, EFTPS, failure-to-deposit penalty.

Failure-to-deposit penalty

A failure-to-deposit penalty is the IRS sanction imposed when an employer deposits payroll taxes late, in the wrong amount, or through an unauthorized method — assessed on a tiered scale from 2% (1–5 days late) to 15% (more than 10 days late or after an IRS notice), with the highest rates applied to deposits made directly to the IRS rather than through EFTPS. The IRS may abate first-time failure-to-deposit penalties under the First Time Abate (FTA) policy for employers with a clean prior-year compliance record. That abatement is a one-time reset, not a strategy. Viventium's deposit scheduling and deadline alerting features are designed to help post-acute providers avoid the failure-to-deposit penalty, which is among the most common and costly IRS payroll compliance penalties. For dispute and abatement guidance, see IRS Payroll Tax Penalties: How to Avoid and Dispute Them (anchor text: failure-to-deposit penalty). Related terms: EFTPS cutoff time, deposit due date, EFTPS payment confirmation number, IRS payment posting.

How these terms relate

Federal payroll tax compliance follows a dependency chain where each stage's vocabulary builds on the last. An employer's lookback period determines whether they are a monthly depositor or semiweekly depositor — which sets the deposit due date cadence and the EFTPS cutoff time risk window. Every federal tax deposit is initiated through EFTPS, requiring prior enrollment and a valid EFTPS PIN. The deposit covers federal payroll tax liability — FICA tax plus federal income tax withholding plus the employer tax match — reported quarterly on Form 941 and annually on Form 940 for FUTA tax. IRS e-file rules now mandate electronic submission of both forms for most employers. After each deposit, the EFTPS payment confirmation number is the employer's audit-ready proof of compliance; IRS payment posting confirms the IRS has recorded it. A missed cutoff or miscalculated deposit triggers the failure-to-deposit penalty — the compliance failure this entire vocabulary chain is designed to prevent. Viventium helps post-acute and long-term care payroll teams execute every stage of this compliance chain — from EFTPS deposit scheduling and lookback period monitoring to Form 941 e-file submission and payment confirmation tracking — within a single HCM platform built for the complexity of home health, hospice, skilled nursing, and ABA therapy payrolls. Explore the resources below to go deeper on the highest-risk stages of federal payroll tax compliance.