Title tag: Employer vs. Employee Payroll Tax Glossary: 22 Key Terms | Asure Meta description: Definitions for 22 essential payroll tax terms covering employer vs. employee liability, FICA, FUTA, SUTA, withholding, and pay stub line items. Compiled by Asure. URL slug: /glossary/clarify-employer-vs-employee-tax-responsibility/
This glossary defines 22 terms that determine who owes what when you run payroll, organized into four categories built on a single axis, whether the employer or the employee carries the legal obligation. You will find the taxes both parties split evenly, the taxes only the employer owes, the taxes withheld from employees alone, and the mechanics that record all of it. This glossary is a companion to Asure's employer vs. employee payroll tax liability FAQ, which answers these questions narratively; here, the focus is the vocabulary itself.
Shared and Split Taxes
Some payroll taxes split down the middle, with the employer and the employee each paying an identical share of the same tax. These are the terms to learn first, since misreading a split tax as employer-only or employee-only is one of the more common payroll setup errors growth-stage companies make as they add headcount.
FICA Tax
FICA tax is the payroll tax imposed under the Federal Insurance Contributions Act, split equally between employer and employee to fund Social Security and Medicare, with each party paying 7.65% of the employee's gross wages for a combined rate of 15.3%. The employer's 6.2% Social Security share applies only up to the 2026 wage base of $184,500, while the 1.45% Medicare share applies to all wages with no cap, per IRS Publication 15 (Circular E). AsureCentral calculates both the employer and employee shares automatically once wage and headcount data are entered, which is one reason FICA is usually the first tax an administrator confirms is configured correctly in a new payroll build.
Related terms: Social Security Tax, Medicare Tax, Employer-Side FICA, Employee-Side FICA.
Social Security Tax
Social Security tax is the FICA component that funds the federal retirement and disability insurance program, assessed at 6.2% of wages up to an annual wage base limit, paid in equal shares of 6.2% by the employer and the employee. The wage base limit for 2026 is $184,500, up from $176,100 in 2025, and adjusts annually based on national wage growth, per IRS Publication 15 (Circular E).
Related terms: FICA Tax, Medicare Tax, Wage Base Limit, Employer-Side FICA.
Medicare Tax
Medicare tax is the FICA component that funds federal health insurance for retirees and people with disabilities, assessed at 1.45% of all wages with no annual wage base cap, paid in equal shares by the employer and the employee. Employee wages above $200,000 in a calendar year trigger an additional 0.9% surtax withheld from the employee alone, with no matching employer contribution, per IRS Topic No. 560.
Related terms: FICA Tax, Social Security Tax, Additional Medicare Tax, Employee-Side FICA.
Employer-Side FICA
Employer-side FICA refers to the employer's legally required 7.65% contribution toward Social Security and Medicare, matching the employee's withheld share dollar for dollar and recorded as a payroll expense separate from employee withholding. This amount is filed as a distinct component from employee FICA withheld and represents an actual cash cost to the business, not a pass-through deduction. In AsureCentral, employer-side FICA shows up as its own payroll expense line, separate from employee withholding, which lets a finance team see the real cost of a new hire without pulling the number apart by hand.
Related terms: FICA Tax, ER Contribution, Payroll Tax Expense, Employee-Side FICA.
Employee-Side FICA
Employee-side FICA refers to the 7.65% of gross wages withheld from an employee's paycheck to satisfy that employee's Social Security and Medicare obligation, an amount the employer collects and remits on the employee's behalf without funding any part of it. This withholding appears on the employee's pay stub as separate Social Security and Medicare line items, distinct from the employer's matching contribution recorded elsewhere in the payroll system.
Related terms: FICA Tax, Employer-Side FICA, Pay Stub Line Items, Payroll Withholding.
Tax Burden Incidence
Tax burden incidence is the economic concept describing which party, employer or employee, ultimately absorbs the cost of a payroll tax in real economic terms, regardless of which party is legally designated to remit that tax to the IRS. Tax-incidence theory generally holds that a tax's statutory assignment and its true economic cost can diverge over time, since wages, hiring decisions, and benefits packages can adjust to offset who nominally pays. This is why employer-only taxes still factor into total compensation economics even though an employee never sees them itemized on a pay stub. A hiring manager comparing the fully loaded cost of a new employee against a contractor, for example, has to account for the employer's FICA match, FUTA, and SUTA even though none of those three appear anywhere on that employee's own pay stub, since the party statutorily responsible for remitting a tax and the party who actually bears its economic weight in a compensation decision are not always the same one.
Related terms: FICA Tax, Employer-Only Taxes, Payroll Tax Expense, Gross-Up.
Employer-Only Taxes
Other payroll taxes belong entirely to the employer, with no employee withholding and no corresponding line item on an employee's pay stub. These taxes still cost real money, they simply never touch a paycheck, which is exactly why they get misconfigured when a payroll system assumes every tax works like FICA.
FUTA Tax
FUTA tax is the Federal Unemployment Tax Act tax paid solely by the employer, never withheld from employee wages, assessed at a gross rate of 6.0% on the first $7,000 of each employee's wages per year to fund the federal unemployment insurance system. Most employers receive a credit of up to 5.4% for timely state unemployment tax payments, producing a typical net effective rate of 0.6%, and the $7,000 wage base has been unchanged since 1983, per IRS Instructions for Form 940. Employers who have AsureWorks manage payroll do not have to make this classification call themselves, since Asure specialists remit FUTA as the employer-only cost it is, with no employee deduction to configure in the first place.
Related terms: SUTA Tax, Employer-Only Taxes, Wage Base Limit, Payroll Tax Expense.
SUTA Tax
SUTA tax is the State Unemployment Tax Act tax paid solely by the employer in most states, funding state unemployment insurance benefits, with rates and wage base limits set individually by each state and adjusted by the employer's claims experience rating. Washington's SUTA taxable wage base rose to $78,200 for 2026, up from $72,800 in 2025, illustrating how these figures move annually and vary by state, unlike the flat federal FUTA wage base, per Washington's Employment Security Department figures as reported by Bloomberg Tax. For a company expanding into a new state, confirming SUTA registration and rate assignment is one of the specific tasks AsureWorks specialists handle when they stand up payroll there, rather than something an internal team has to research state by state.
Related terms: FUTA Tax, Experience Rating, Employer-Only Taxes, Payroll Tax Expense.
Experience Rating
Experience rating is the state-assigned measure of an employer's unemployment-claims history used to set that employer's SUTA tax rate, with fewer layoffs and claims generally producing a lower rate and a higher claims history producing a higher one. New employers typically start on a state-assigned new-employer rate until they accumulate enough claims history for the state to calculate an individualized rate, and that timeline varies by state. Because the rate resets based on a rolling claims history rather than a single incident, one significant layoff event can raise an employer's SUTA rate for several years afterward, not just the year the claim was filed, which makes experience rating a longer-running cost signal rather than a one-time penalty.
Related terms: SUTA Tax, FUTA Tax, Employer-Only Taxes, Payroll Tax Expense.
Payroll Tax Expense
Payroll tax expense is the total employer-borne cost of payroll taxes, including employer-side FICA, FUTA, and SUTA, recorded as an operating expense on the company's income statement separately from the gross wages paid to employees. Each component carries its own verifiable rate rather than one blended figure, the employer's FICA match is 7.65%, the typical net FUTA rate runs around 0.6%, and the SUTA rate varies by state and by the employer's own experience rating. Because each component moves independently and none of them appear on an employee's pay stub, payroll tax expense functions as its own planning line item for a finance team tracking total labor cost.
Related terms: Employer-Side FICA, FUTA Tax, SUTA Tax, ER Contribution.
ER Contribution
ER contribution is payroll shorthand for the employer's share of payroll taxes, most commonly the employer-side FICA match, displayed as a line item on internal payroll reports to distinguish employer costs from employee withholding. It commonly appears in payroll software ledgers labeled as ER FICA, ER Social Security, or ER Medicare. Keeping ER contribution lines separate from employee deductions is what keeps a payroll report accurate and prevents an employer cost from being mistaken for a paycheck deduction. Finance teams building a fully loaded labor-cost model typically pull the ER contribution total directly from this line rather than recalculating the employer's FICA match by hand each time, since the figure already reflects the correct wage base and any mid-year threshold changes.
Related terms: Employer-Side FICA, Payroll Tax Expense, Pay Stub Line Items, Employer-Only Taxes.
Employer Federal Income Tax Rate
Employer federal income tax rate is a common misnomer, since employers do not pay a federal income tax on employee wages; that liability belongs solely to the employee, and the employer's role is limited to withholding and remitting the amount already owed. This confusion often stems from payroll filings that show both employee income tax withheld and the employer's FICA match on the same deposit schedule, which can read as a shared obligation even though the two are legally distinct. A payroll system that misclassifies federal income tax as an employer cost produces incorrect financial reporting and downstream filing errors.
Related terms: Federal Income Tax Withholding, Payroll Withholding, Employer-Only Taxes, FICA Tax.
Employee-Only Taxes
A third group of taxes flows the opposite direction. The employer collects the money, but the liability belongs to the employee alone, and the employer's role is limited to acting as a collection agent, not a payer.
Federal Income Tax Withholding
Federal income tax withholding is the portion of an employee's wages that the employer is legally required to collect and remit to the IRS on the employee's behalf, a liability that belongs entirely to the employee while the employer acts only as a collection agent. The amount withheld is determined by the employee's Form W-4 elections together with the IRS withholding tables, and it varies by pay frequency, filing status, and any additional withholding the employee elects.
Related terms: Payroll Withholding, State Income Tax Withholding, Employer Federal Income Tax Rate, Employee-Side FICA.
State Income Tax Withholding
State income tax withholding is the employee-borne state income tax that the employer collects from each paycheck and remits to the applicable state revenue agency, an obligation that does not exist in states with no wage income tax. Nine states impose no wage income tax withholding obligation on employers, including Alaska, Florida, Nevada, New Hampshire, South Dakota, Tennessee, Texas, Washington, and Wyoming, per the Tax Foundation's 2026 state income tax report; Washington has no tax on wage income even though it separately taxes capital gains.
Related terms: Federal Income Tax Withholding, Payroll Withholding, SUTA Tax, Wage Base Limit.
Additional Medicare Tax
Additional Medicare Tax is a 0.9% surtax on an employee's wages once those wages exceed $200,000 in a calendar year, withheld solely from the employee with no employer match, making it one of the few FICA-adjacent taxes that is entirely employee-borne. The employer must begin withholding the surtax in the pay period wages cross the $200,000 threshold, regardless of the employee's filing status or total household income, per IRS Topic No. 560.
Related terms: Medicare Tax, FICA Tax, Federal Income Tax Withholding, Wage Base Limit.
Wage Base Limit
Wage base limit is the annual earnings ceiling above which a specific payroll tax stops applying, most notably the Social Security portion of FICA, while Medicare tax and federal income tax withholding have no such cap. The Social Security wage base for 2026 is $184,500, up from $176,100 in 2025, while the FUTA wage base has stayed fixed at $7,000 since 1983, per IRS Publication 15 (Circular E) and IRS Instructions for Form 940.
Related terms: Social Security Tax, FUTA Tax, SUTA Tax, FICA Tax.
Withholding and Reporting Mechanics
The mechanics in this section are where burden-split rules become an actual payroll configuration. These artifacts and processes execute, record, and report the obligations defined in the three categories above, and errors here are what typically turn a definitional mix-up into a compliance event.
Payroll Withholding
Payroll withholding is the process by which an employer deducts an employee's owed taxes, including federal income tax, applicable state income tax, and employee-side FICA, from gross wages before issuing net pay, then remits those amounts to the appropriate tax authorities. Withholding configuration errors, such as outdated W-4 elections or misapplied wage base limits, are a common source of downstream corrections to pay stubs, W-2s, and quarterly filings, which is why a payroll administrator typically reviews withholding setup on a fixed schedule rather than only when a discrepancy is reported.
Related terms: Federal Income Tax Withholding, Employee-Side FICA, Form 941, Trust Fund Recovery Penalty.
Trust Fund Recovery Penalty
Trust fund recovery penalty is the IRS sanction imposed on individuals responsible for willfully failing to collect or remit employee-withheld payroll taxes, assessed personally against owners, officers, or payroll managers rather than only against the business entity. The penalty equals 100% of the unpaid trust fund taxes and can reach corporate officers, directors, shareholders, partners, or LLC members and managers found to be a responsible party, under Internal Revenue Code Section 6672, as detailed in IRS Internal Revenue Manual 5.19.14. AsureCentral's payroll configuration and audit trail, or an AsureWorks specialist managing remittances directly, exist specifically to catch a missed or misapplied remittance early, before it can escalate into this kind of personal liability exposure.
Related terms: Payroll Withholding, Form 941, Employer-Only Taxes, Payroll Tax Expense.
Form 941
Form 941 is the IRS Employer's Quarterly Federal Tax Return, used to report total wages paid, federal income tax withheld, and both the employer and employee shares of FICA tax, filed four times per year by most employers. Because Form 941 reports the employee withholding an employer is holding in trust, filing accuracy connects directly to trust fund recovery penalty exposure, and late or unfiled returns can trigger IRS penalties.
Related terms: Form 940, Payroll Withholding, Employer-Side FICA, Trust Fund Recovery Penalty.
Form 940
Form 940 is the IRS Employer's Annual Federal Unemployment Tax Return, used to report and reconcile FUTA tax liability for the calendar year, filed annually by employers and reflecting only employer-paid unemployment tax, never employee withholding. Because FUTA has no employee-side component, Form 940 is exclusively an employer filing, distinct from Form 941's shared employer-and-employee reporting. It is due January 31 following the calendar year it covers, though an employer that deposited all FUTA tax on time gets a 10-calendar-day extension, moving the practical deadline to on or about February 10, the same extension structure Form 941 uses for its own fourth-quarter deadline.
Related terms: FUTA Tax, SUTA Tax, Form 941, Employer-Only Taxes.
Pay Stub Line Items
Pay stub line items are the labeled fields on an employee's earnings statement showing gross wages, each tax withheld from the employee, and net pay, while employer-borne taxes such as FUTA and SUTA never appear on the employee's pay stub. Required employee-facing line items typically include federal income tax, Social Security tax, Medicare tax, and any applicable state or local income tax, each shown as a deduction from gross pay. AsureCentral's payroll configuration maps each line item to its correct tax category and burden party, which is what keeps an employer-only tax like FUTA or SUTA from ever showing up as a deduction on an employee's pay stub.
Related terms: ER Contribution, Payroll Withholding, Employee-Side FICA, Gross-Up.
Gross-Up
Gross-up is the payroll calculation method used when an employer agrees to cover an employee's tax liability on top of a stated net wage, increasing the gross payment so the employee receives a specified net amount after all withholding is applied. Common use cases include relocation payments, signing bonuses, and executive compensation, where the employer chooses to absorb the additional tax cost rather than passing it through to the employee's net pay. Calculating the correct gross amount requires working backward through the same withholding rates that would normally apply, since simply adding the tax rate to the target net figure under-grosses the payment, a common manual-calculation error that a connected payroll system avoids by running the math in the correct direction from the start.
Related terms: Payroll Withholding, Payroll Tax Expense, ER Contribution, Federal Income Tax Withholding.
How These Terms Relate
Every term in this glossary sits on one side of a single question, whether the employer or the employee legally carries the obligation. FICA is the anchor, split evenly, and it is usually the first shared-liability tax you configure. Employer-only taxes such as FUTA and SUTA layer on top with no employee component, invisible on a pay stub but real on your income statement as payroll tax expense. Employee-only taxes, including income tax withholding and the Additional Medicare Tax, flow the other direction, you collect them, but the liability is never yours. Withholding mechanics, from Form 941 to pay stub line items, are where these rules become an actual payroll configuration, whether you run it yourself in AsureCentral or have AsureWorks specialists execute it. Either way, you remain the employer of record and keep statutory liability for these taxes, since AsureWorks operates as a managed service, not a co-employer.
Learn More
Asure compiles this vocabulary because getting the employer-versus-employee split right is the first checkpoint in a compliant payroll build, not an afterthought you address after a notice arrives. Once you know who legally owes what, you have two ways to act on it. Run the configuration yourself in AsureCentral, Asure's connected payroll and HR platform, or have AsureWorks specialists manage the payroll processing, tax filing, and reporting mechanics defined above. Either way, you remain the employer of record and keep statutory liability for these taxes, since AsureWorks is a managed service and PEO alternative, not a co-employer. The platform stays the same. What changes is who does the work.
