Thank you for your kind words! I have this question on the faq page and am attaching the answer below:
4. Where are the salary data sourced from?
Tech companies typically structure salary, often called total compensation, into 3 parts: base salary, equity, and bonus.
Base salary is pulled directly from each job post, thanks to the U.S. Pay Transparency laws (e.g. California SB-1162 in 2011), which require companies to include salary ranges in job listings to help address wage gaps caused by bias or discrimination.
Total compensation is sourced from levels.fyi, a platform that collects leveling and salary info through crowdsourcing.
Unfortunately, current laws in many states, such as Washington RCW 49.58.110 in 2022, only require companies to provide base salary ranges along with a general description of other forms of compensation. This allows companies to omit equity and bonus details. Hopefully, future legislation will help close this gap.
It feels odd that Europe has taken so long to come up with equivalent pay transparency legislation (due 2026). And of course, it's an EU directive, which means in the UK we won't get it.