Free Payroll Tool
See what your payroll provider really charges
Most providers hide per-run and add-on fees. Audit your real cost per employee in about 30 seconds, free.
Run the Payroll Fee Auditor →Blog · Payroll Management · Engineering
Engineering & Professional Services Firms: Payroll Tax Guide (2026)
Payroll tax for an engineering firm is the federal stack every employer runs, withholding, 7.65 percent employer FICA, FUTA, deposits and Form 941, plus the engineering firm items this page cites: IRS About Form 8974 and IRS: Independent contractor (self-employed) or employee?. BEG: $45 per employee per month inside the payroll software you already use, live in 3 to 5 days.
Tax rules specific to engineering firms
Employers use Form 8974 to determine the qualified small business payroll tax credit for increasing research activities that can be claimed on the employment tax return; related forms listed by the IRS include Forms 941, 943, 944 and 6765.
Firms that engage individual engineers or drafters as contractors must apply the IRS common law rules on behavioral control, financial control and type of relationship; if status is unclear, either the business or the worker can file Form SS-8 for an IRS determination, which may take at least six months.
The stack every engineering firm runs
On one of the civil engineers at the May 2025 national median of $100,840, the employer share of Social Security and Medicare is $7,714 a year, FUTA is $42 after the 5.4 percent state credit on the first $7,000, and income tax withholding follows the employee's W-4. Deposits are monthly or semiweekly depending on the prior lookback period, with a next-business-day deposit whenever $100,000 accumulates. Form 941 is due the last day of the month after each quarter; W-2s and any 1099-NEC at the $2,000 threshold are due January 31.
The rules behind this page, with sources
General information, not legal advice. Every rule below was read on the agency page linked next to it.
- Employers use Form 8974 to determine the qualified small business payroll tax credit for increasing research activities that can be claimed on the employment tax return; related forms listed by the IRS include Forms 941, 943, 944 and 6765. [IRS About Form 8974]
- Firms that engage individual engineers or drafters as contractors must apply the IRS common law rules on behavioral control, financial control and type of relationship; if status is unclear, either the business or the worker can file Form SS-8 for an IRS determination, which may take at least six months. [IRS: Independent contractor (self-employed) or employee?]
Read the full guide to how to calculate payroll taxes, and the rest of the engineering firm payroll library.
Managed Payroll, Handled.
BEG manages payroll at $45 per employee per month, all-inclusive. Get an instant cost comparison for your business.
Frequently Asked Questions
Engineering firm payroll tax: IRS About Form 8974
Employers use Form 8974 to determine the qualified small business payroll tax credit for increasing research activities that can be claimed on the employment tax return; related forms listed by the IRS include Forms 941, 943, 944 and 6765.
Engineering firm payroll tax: IRS: Independent contractor (self-employed) or employee?
Firms that engage individual engineers or drafters as contractors must apply the IRS common law rules on behavioral control, financial control and type of relationship; if status is unclear, either the business or the worker can file Form SS-8 for an IRS determination, which may take at least six months.
What is the employer tax cost on one of the civil engineers?
At the $100,840 national median (BLS OEWS, May 2025): $7,714 in employer Social Security and Medicare, $42 in FUTA after the state credit, plus state unemployment at the employer's assigned rate.
What does managed payroll cost for an engineering firm?
$45 per employee per month, all-inclusive, inside the payroll software you already use, with no monthly minimum. Prevailing wage for government projects, billable hour payroll allocation and PE license classification are configured at setup, not billed as add-ons.
Related Resources
Anthony leads payroll solutions at Business Executive Group, a national managed payroll firm serving businesses across industries including Engineering & Professional Services Firms. BEG manages payroll at $45 PEPM, all-inclusive, with deep expertise in compliance, multi-state filing, and industry-specific payroll requirements. Get instant pricing at beghr.com.
Authoritative source: IRS: Understanding Employment Taxes
From the blog