Employee Fully-Loaded Cost Calculator

The formula is straightforward: take the base salary, then add employer payroll tax, benefits, and overhead, each expressed as a percentage of that salary.

Fully-Loaded Cost = Base Salary times (1 plus the combined Benefits, Payroll Tax, and Overhead percentages)

• Employer payroll tax: the employer share of Social Security and Medicare, plus federal and state unemployment insurance
• Benefits: health insurance, retirement contributions, paid time off, and any other benefits the employer funds
• Overhead: equipment, software licenses, office space, recruiting, and administrative or HR support time allocated to that employee

Because these three percentages stack on top of base salary rather than replacing it, even a modest 8 percent payroll tax, 15 percent benefits, and 10 percent overhead adds a third to the total cost. That is why the commonly cited 1.25x to 1.4x multiplier holds up across so many real employers: the specific mix of benefits and overhead varies, but the combined effect usually lands in a similar range.

Real-world figures vary by company and location, but these are commonly cited US benchmark ranges for each category:

The one-time recruiting and equipment figures above are not part of this calculator's ongoing annual formula, since they only apply in the year someone is hired, but they are worth factoring in separately when budgeting for a new position.

A contractor typically costs less in employer overhead since there is no employer-paid payroll tax, no benefits obligation, and no equipment or office space to provide, but you also lose the ability to direct exactly how and when the work gets done, which is one of the legal lines that separates the two classifications.

Misclassifying an employee as a contractor to avoid these costs carries real risk: the IRS can assess significant back taxes and penalties if a worker who is functionally an employee is treated as a contractor. Use the Contractor vs. Employee Cost Calculator to compare both options side by side before deciding.

These are two different numbers that are easy to mix up. Cost per hire is a one-time figure covering the recruiting process itself: job postings, recruiter time, interviews, and background checks. SHRM's own research puts the average cost per hire at around $4,700, though specialized roles can run into five figures.

Fully-loaded cost, what this calculator computes, is the ongoing annual cost of employing someone once they are already hired. If you are trying to budget the total cost of adding a new role, you generally want both numbers: cost per hire as a one-time expense in year one, and fully-loaded cost as the recurring annual expense every year after.

A third, separate metric worth not confusing with either of these is employee turnover, how often people leave in the first place. A high Turnover Rate drives up your real cost-per-hire spending, since replacing people repeatedly means paying that one-time recruiting cost over and over.