Cost to company is calculated by adding an employee’s gross cash pay to every other dollar the employer spends because that person is on the payroll: payroll taxes, insurance premiums, retirement contributions, and other benefits. So the short answer to how CTC is calculated is a single formula: CTC = Gross Cash Pay + Employer Payroll Taxes + Insurance Premiums + Retirement Contributions + All Other Benefits. The number is always larger than the salary on the offer letter, often by 20% to 30%, because most of those line items never pass through a paycheck.
The Components You Add Up
Gross Cash Pay
Start with base salary, the fixed annual figure in the offer letter. Add any variable cash: performance bonuses (around 3.5% of gross pay for the average U.S. worker, higher in banking and tech), sales commissions, and any guaranteed signing or relocation payment, which belongs in the first year’s CTC even though it’s one-time. Add taxable allowances and stipends too, such as a monthly phone or home-office stipend or a transportation allowance. The sum is gross cash pay, the first layer of CTC. For most salaried roles, base pay alone is 55% to 70% of total CTC.
Employer Payroll Taxes
Federal law requires the employer to pay 6.2% of wages toward Social Security and 1.45% toward Medicare, separate from the identical amounts withheld from the employee’s paycheck.1Office of the Law Revision Counsel. 26 US Code 3111 – Rate of Tax Social Security applies only to the first $184,500 of wages in 2026, capping the employer’s Social Security cost at $11,439 for the year.2Social Security Administration. 2026 Cost-of-Living Adjustment (COLA) Fact Sheet Medicare has no wage cap. The 0.9% additional Medicare surtax on wages above $200,000 falls entirely on the employee and is not matched by the employer.3Internal Revenue Service. Questions and Answers for the Additional Medicare Tax At a $100,000 salary, combined employer FICA is $7,650.
Federal unemployment tax (FUTA) is set at 6.0% on the first $7,000 of each employee’s annual wages.4Office of the Law Revision Counsel. 26 USC 3301 – Rate of Tax Employers in states with an approved unemployment program receive a 5.4% credit, dropping the effective rate to 0.6% and capping FUTA at $42 per employee per year.5Employment & Training Administration – U.S. Department of Labor. Unemployment Insurance Tax Topic State unemployment (SUTA) rates vary widely, running from under 1% for employers with clean claims histories to 7% or more for those with frequent layoffs.
Insurance Premiums
Employer-sponsored health insurance is usually the largest single benefit line. In 2025, the average total premium for single coverage was $9,325, with the employer paying most of it, and family coverage averaged nearly $27,000.6KFF. 2025 Employer Health Benefits Survey These dollars go directly from the employer to the insurer and never appear on a pay stub.
Group-term life insurance is a common add-on. The first $50,000 of employer-provided coverage is tax-free to the employee under federal rules; coverage above that creates taxable imputed income based on IRS cost tables, though the employer still pays the premium.7Internal Revenue Service. Group-Term Life Insurance Dental, vision, and short-term disability work the same way: the employer pays a carrier, and that premium belongs in CTC.
Workers’ compensation insurance is legally required in nearly every state. Cost swings sharply by industry: office roles may run around $0.50 per $100 of payroll, while construction and manufacturing can hit several dollars per $100. The all-industry average is roughly $3 per $100 of payroll, or about $1,100 to $1,200 a year for someone at median pay.
Retirement Contributions
If the plan includes a 401(k) match, that match is part of CTC. The most common structure is a 50% match on employee contributions up to 6% of salary, which equals an extra 3% of pay. Some employers match dollar-for-dollar up to 4% to 6%. For 2026, employee elective deferrals can reach $24,500, or $32,500 at age 50 and older, or $35,750 for ages 60 through 63.8Internal Revenue Service. 401(k) Limit Increases to $24,500 for 2026, IRA Limit Increases to $7,500 Total contributions to one account, including the employer match and any profit-sharing, cannot exceed $72,000 for 2026.9Internal Revenue Service. 2026 Amounts Relating to Retirement Plans and IRAs For a $90,000 earner on a standard 50%-up-to-6% formula, the match is up to $2,700 per year.
Other Employer-Paid Benefits
Tuition reimbursement is tax-free up to $5,250 per employee per year under Section 127 of the tax code.10Office of the Law Revision Counsel. 26 US Code 127 – Educational Assistance Programs Employers that offer it build an expected participation rate into per-employee cost. Subsidized meals, on-site fitness, commuter benefits, parking subsidies, wellness vendors, and professional development budgets all carry real dollar values. A $15-per-day meal subsidy across about 240 working days is $3,600 a year. None of this reaches the bank account, but all of it belongs in CTC because the employer wouldn’t spend any of it if the employee weren’t there.
A Worked Example
Take a professional on a $90,000 base salary with a $5,000 performance bonus:
- Gross cash pay: $95,000 (base + bonus + allowances)
- Employer FICA: $7,268 (6.2% + 1.45% on $95,000)
- FUTA and SUTA: about $500 (varies by state and claims history)
- Health insurance: about $7,500 (employer share of single coverage)
- 401(k) match: $2,700 (50% on 6% of $90,000 base)
- Workers’ comp: about $1,000
- Life, dental, and vision insurance: about $1,200
- Other benefits (wellness, training): about $1,500
Total CTC: roughly $116,668. Gross pay to the employee: $95,000. The remaining $21,668, about 23% of total CTC, is the cost the employer absorbs without it ever appearing on a pay stub. In benefit-heavy industries or at senior levels with richer packages, that invisible share often climbs past 30%.
Why Your Take-Home Is Smaller Than Your CTC
CTC answers what the employer spends. Take-home pay answers what you receive. Those are different numbers because deductions also come off the employee’s side: your own 6.2% Social Security and 1.45% Medicare, federal income tax withholding, state income tax where it applies, your share of insurance premiums, and your 401(k) contribution.
Running the $95,000 example through: the 2026 standard deduction of $16,100 for a single filer leaves $78,900 in taxable income, with federal tax rates starting at 10% and climbing through the brackets.11Internal Revenue Service. IRS Releases Tax Inflation Adjustments for Tax Year 2026 Federal tax runs roughly $13,200. Employee-side FICA takes another $7,268. A 6% pretax 401(k) contribution is $5,400, and the employee’s share of health premiums adds about $1,800. Take-home lands near $67,300. The company spent $116,668; the employee banks $67,300, roughly 58 cents of every CTC dollar.
What to Weigh When Comparing Offers
Run the CTC math in both directions when you’re deciding between jobs. A higher 401(k) match compounds for decades. A generous family health plan can be worth thousands a year on its own. A slightly lower base with strong benefits can beat a higher base with thin coverage once every line in the formula is accounted for. The salary number is just the first row.