Direct answer: payroll tax starts when the corporation pays wages
The separate C corporation is the employer. If it pays a working owner, officer, manager, or staff member for services, the payment belongs in the wage system unless a specific rule supports different treatment. Publication 15 identifies federal income tax withholding, Social Security and Medicare taxes, and FUTA as employer payroll duties; IRS employment-tax pages add deposit and filing duties for those taxes.[2][4]
A ROBS transaction itself is different: eligible retirement assets roll into a qualified plan, and the plan buys stock of the C corporation.[1] After that, the corporation, employer, owner-employee, plan, trust, and shareholder roles must stay separate. Wages compensate labor. Plan distributions come from the retirement plan under plan and tax rules. Dividends are shareholder distributions. Accountable reimbursements repay substantiated business expenses. Mixing those labels can create payroll, corporate-tax, plan, and recordkeeping problems.[2][7]
Separate the roles before choosing a pay label
Start by naming the actor and the payment before calculating tax. In a ROBS structure, the same person may work for the corporation, direct the company, participate in the plan, and benefit from plan-owned stock, but payroll treatment follows the payment’s legal role.
Federal payroll taxes and 2026 cost components
For 2026 wages, the Social Security tax rate is 6.2% for the employee and 6.2% for the employer, up to the $184,500 Social Security wage base. Medicare tax is 1.45% for the employee and 1.45% for the employer, with no wage base. Additional Medicare Tax is an employee-only 0.9% withholding that begins when wages paid by the employer exceed $200,000 in a calendar year; the employer does not match it.[2]
FUTA is paid only by the employer and is not withheld from employee wages. Publication 15 states the FUTA tax rate is 6.0% on the first $7,000 of wages, before any allowable credit for state unemployment tax. The maximum credit is commonly 5.4% when state unemployment requirements are satisfied, making the effective federal FUTA cost 0.6% in ordinary non-credit-reduction cases, but employers must verify their state credit and any credit-reduction status.[2][4]
Federal income tax withholding is not computed as a flat employer cost. The employer uses Form W-4 and IRS withholding methods in Publication 15-T; if a new employee does not furnish Form W-4, Publication 15-T says to treat the employee as Single or Married filing separately with no other entries on the 2026 Form W-4.[3]
State unemployment, withholding, and local payroll variability
State payroll cost is not one national number. Treat state payroll as a budgeting and registration workstream, not as a federal rate table. A ROBS-funded corporation with employees should identify every work state and then reopen that state’s revenue, workforce, labor, unemployment-insurance, disability, paid-leave, and local tax agency guidance for the exact withholding, unemployment, disability, paid-leave, local payroll, new-hire, wage-base, rate, registration, deposit, and wage-report rules that apply to that payroll.
Do not assume that the federal $7,000 FUTA wage base or the federal Social Security wage base controls state unemployment. The safe planning step is to budget a separate state payroll reserve until each work state’s official notices or agency accounts confirm the wage base, rate, due dates, and employee-paid versus employer-paid amounts.
Forms, deposits, records, and deadlines
Onboarding usually starts with Form W-4 for federal income-tax withholding and Form I-9 for employment eligibility verification. USCIS states that all U.S. employers must complete Form I-9 for each U.S. hire, keep it on file, retain it for three years after hire or one year after termination, whichever is later, and not file it with USCIS or ICE.[3][8]
Most nonfarm employers that withhold federal income tax, Social Security, or Medicare taxes file Form 941 quarterly. Form 944 is only for employers that have received written IRS notification to file annually. FUTA is reported annually on Form 940. Employers furnish Forms W-2 to employees and file Forms W-2 with Form W-3 to the SSA by January 31.[4][5]
Deposits are separate from returns. Federal tax deposits generally must be made by electronic funds transfer, including EFTPS. Monthly depositors deposit employment taxes for payments made during a month by the 15th day of the following month. Semiweekly depositors deposit Wednesday-Friday payroll taxes by the following Wednesday and Saturday-Tuesday payroll taxes by the following Friday. If $100,000 or more accumulates on any day during a deposit period, the next-day rule applies. FUTA deposits are required for a quarter when FUTA tax due exceeds $500, with deposit due by the end of the month after the quarter.[4][5]
Reproducible examples with explicit assumptions
These examples use 2026 federal rates and wage bases identified above. They exclude federal income tax withholding because W-4 data controls that amount, and they exclude state income withholding, state unemployment, local payroll taxes, benefits, workers’ compensation, payroll-provider fees, and plan administration costs unless stated.
Example 1: owner-employee paid $96,000 in 2026 wages
Assumptions: one ROBS C corporation pays the working owner $96,000 of W-2 wages during 2026, all below the $184,500 Social Security wage base, and the employer qualifies for the full FUTA credit. Employee Social Security withholding: $96,000 × 6.2% = $5,952. Employee Medicare withholding: $96,000 × 1.45% = $1,392. Employer Social Security: $96,000 × 6.2% = $5,952. Employer Medicare: $96,000 × 1.45% = $1,392. FUTA after full credit: $7,000 × 0.6% = $42. Employer federal payroll-tax cash cost, before state payroll taxes and provider fees: $5,952 + $1,392 + $42 = $7,386.
Example 2: one employee paid $220,000 crosses both wage thresholds
Assumptions: one employee earns $220,000 from the corporation in 2026. Social Security applies only to the first $184,500. Employee Social Security: $184,500 × 6.2% = $11,439. Employer Social Security: $184,500 × 6.2% = $11,439. Employee Medicare: $220,000 × 1.45% = $3,190. Employer Medicare: $220,000 × 1.45% = $3,190. Additional Medicare withholding: ($220,000 - $200,000) × 0.9% = $180, employee-only. FUTA after full credit: $7,000 × 0.6% = $42. Employer federal payroll-tax cash cost: $11,439 + $3,190 + $42 = $14,671.
Example 3: budget a state unemployment placeholder without pretending it is universal
Assumptions: a state assigns a new-employer unemployment rate of 2.7% on a hypothetical $12,000 state taxable wage base. State unemployment cost per employee: $12,000 × 2.7% = $324. For five employees who each reach the state wage base, $324 × 5 = $1,620. This is a budgeting placeholder only. The actual state wage base, rate, employee-paid taxes, local payroll taxes, and disability or leave programs must be verified in the specific work state.
Cash-flow budgeting, corrections, and penalty boundaries
Payroll tax is a cash-flow item, not an annual surprise. Each payroll should set aside employee withholding held in trust, employer FICA, FUTA accrual, and state payroll amounts. A payroll service can calculate and transmit deposits, but the corporation remains responsible for correct withholding, deposits, returns, and records. Publication 15 warns about deposit penalties and trust fund recovery penalty exposure when withheld taxes are not paid.[2]
Corrections depend on the return and year. The IRS correction page says employers use corresponding 94X-X forms, such as Form 941-X, to correct errors on filed employment tax returns; there is no separate X form for Form 940, so taxpayers amend Form 940 by checking the amended-return box. Federal income-tax withholding and Additional Medicare Tax corrections are more limited after the calendar year, and interest-free adjustment treatment has conditions.[6]
Hiring and professional next steps
Use this sequence before the first paycheck, before owner compensation changes, and whenever hiring crosses into a new work state. The goal is to make payroll setup match the corporation’s facts before taxes are withheld or wages are reported.
- 1. Before first payroll: obtain the corporation EIN, payroll state registrations, Form W-4, Form I-9, state withholding forms, unemployment account details, workers’ compensation review, and payroll calendar.
- 2. Before owner pay: document the role, duties, hours, market compensation support, pay frequency, and board or corporate approval so wages are not improvised after profits are known.
- 3. Before plan contributions: coordinate payroll deferrals, employer contributions, eligibility, coverage, nondiscrimination, and top-heavy testing with the plan administrator. Employee-plan contributions are not a substitute for payroll tax compliance.
- 4. Before expansion: review every new work state, remote employee, acquisition, franchise unit, or seasonal workforce with a payroll provider, CPA, benefits administrator, and employment counsel as needed.
ROBS payroll-tax costs FAQ
These answers summarize the recurring payroll-tax questions for a ROBS-funded corporation. They do not replace payroll setup for a specific state, employee class, or compensation arrangement.
Does a ROBS-funded owner have payroll tax?
Yes, when the C corporation pays the owner for services as a corporate officer or employee, the wage payment is subject to normal employer payroll rules. The plan’s stock ownership does not convert working-owner wages into plan distributions or dividends.[1][2][7]
Are employee 401(k) contributions an extra payroll tax?
No. Elective deferrals reduce cash paid to the employee and may affect income-tax withholding calculations, but they are plan contributions, not employer payroll taxes. Social Security, Medicare, FUTA, and state unemployment rules still need separate payroll treatment.[2][4]
What federal forms usually matter first?
A typical nonfarm employer starts with Form W-4, Form I-9, quarterly Form 941 unless the IRS has assigned Form 944, annual Form 940 for FUTA, and Forms W-2 and W-3 after year-end.[3][4][5][8]
Can this article determine state unemployment cost?
No. State unemployment wage bases, rates, new-employer rates, industry rates, local payroll taxes, disability programs, and registration thresholds vary by state. Use this article to identify the cost category, then confirm the exact state account rules before the first payroll in that state.[2][5]
Primary sources checked
These sources were opened and checked on Jul. 31, 2026. State payroll amounts must be reopened state by state before filing or deposit decisions.
- [1] IRS: Rollovers as business start-ups compliance project
Page Last Reviewed or Updated: 16-Nov-2025; checked Jul. 31, 2026. Defines the ROBS sequence as rollover assets used by a plan to purchase stock of the new C corporation and warns that the plan is a separate entity with filing and operational duties.
- [2] IRS: Publication 15 (2026), Employer's Tax Guide
2026 publication; checked Jul. 31, 2026. Supports employer wage withholding, Social Security and Medicare rates, Additional Medicare withholding, FUTA, deposits, Forms 941/944/940, records, reimbursements, corrections, and penalties.
- [3] IRS: Publication 15-T (2026), Federal Income Tax Withholding Methods
For use in 2026; checked Jul. 31, 2026. Explains how employers use Form W-4 information and withholding tables, including the 2026 Form W-4 and the default treatment when a new employee does not furnish a Form W-4.
- [4] IRS: Depositing and reporting employment taxes
Page Last Reviewed or Updated: 29-Jun-2026; checked Jul. 31, 2026. States that employers deposit federal income tax and Additional Medicare tax withheld plus both employer and employee Social Security and Medicare taxes, use electronic deposits, file Forms 941/944/940, and furnish/file Forms W-2/W-3 by January 31.
- [5] IRS: Employment tax due dates
Page Last Reviewed or Updated: 21-Apr-2026; checked Jul. 31, 2026. Provides Form 941 quarterly due dates, annual Form 940/W-2/W-3 timing, monthly and semiweekly deposit timing, the $100,000 next-day deposit rule, FUTA deposit threshold, and Form 944 written-notification boundary.
- [6] IRS: Correcting employment taxes
Page Last Reviewed or Updated: 28-Apr-2026; checked Jul. 31, 2026. Identifies 94X-X correction forms, the no-X-form rule for Form 940 amendments, income-tax withholding adjustment limits, Additional Medicare correction limits, and interest-free adjustment boundaries.
- [7] IRS: Paying yourself
Page Last Reviewed or Updated: 08-May-2026; checked Jul. 31, 2026. States that a corporate officer is generally an employee, wages should generally be commensurate with duties, dividends differ from wages, loans need arm’s-length characteristics, and treating employees as nonemployees can create tax and trust-fund penalty exposure.
- [8] USCIS: Form I-9, Employment Eligibility Verification
Last Reviewed/Updated: 06/03/2026; checked Jul. 31, 2026. States that all U.S. employers must complete Form I-9 for each U.S. hire, retain it for three years after hire or one year after termination, whichever is later, and not file it with USCIS or ICE.