It’s wildly and hugely unrealistic. The rule of thumb that employees actually cost a business roughly twice their salary is based on two things: 1. Retention.

It’s wildly and hugely unrealistic. The rule of thumb that employees actually cost a business roughly twice their salary is based on two things: 1. Retention. Hiring costs are “huge”, and so if you have a higher or lower average retention, may make up a disproportionate cost compared to salary. Ramp up time and institutional knowledge loss is no joke either. 2. A spread of average wages. 500k is not average, and a huge number of the costs are relatively fixed. $1,000 a month worth of software licensing isn’t an uncommon number and is fully 1/3 of the salary of a $3k a month or $36k/year junior clerk. It’s peanuts when you look at it next to a $500k/year salary. It may be that the clerk is, all in, costing the company 3x their salary after indemnity insurance and so on. The dev will never reach 10%.