A salary is the cash wage you agreed to pay. A burden rate is a way to talk about everything that sits on top of that wage on the company’s side: employer FICA, unemployment tax you include, and any benefits or other extras you choose to count. The rate is not a mood, and it is not a score out of 100. It is a percentage computed from two dollar amounts.
The formula used on this site
Burden percent equals (total employer cost minus cash wages) divided by cash wages. If wages are $52,000.00 and the add-on is $5,060.00, the burden is 9.73%. The same relationship can be said as a cost per dollar of wages: $57,060.00 divided by $52,000.00 is $1.10 when rounded to cents. The payroll burden rate calculator prints both the percentage and that per-dollar figure after it finishes the arithmetic.
When the salary stays under the 2026 Social Security wage base, and you enter no unemployment tax and no extras, the add-on is only employer FICA. That add-on is 7.65% of wages: 6.2% plus 1.45%. The burden is then 7.65%, and each $1.00 of wages costs $1.08. That is a complete sentence about a narrow model, not a claim that 7.65% is “the” U.S. burden.
What people use the rate for
Owners use a burden rate to turn a job quote into a loaded labor line, or to explain why a $52,000 offer is not a $52,000 budget. Bookkeepers use it to check whether a spreadsheet is still adding employer taxes after a raise. The rate is a planning device. It is not a filing form.
You can also paste a total you already trust. If wages are $52,000.00 and your own workbook says the loaded cost is $60,000.00, the burden is 15.38% and each $1.00 of wages costs $1.15. The calculator does not inspect that workbook. It only divides the two figures you typed.
What the rate does not contain
A burden rate on this site contains employer FICA from the 2026 Publication 15 model, plus FUTA, SUTA, benefits, and other extras only if you entered them. It does not contain employee withholding, net pay, a fifty-state unemployment file, an automatic FUTA credit, cafeteria-plan elections, garnishments, or a workers’ compensation class you never typed.
If someone quotes a “standard 30% burden” without listing the extras, ask which dollars are inside that 30%. The lab will not invent the missing pieces. Use the cost of one employee tool when you want the add-on broken into FICA and the fields you filled in.