In contrast to using sites like Glassdoor which shows what people have been paid historically, I usually look at job sites & adverts to see what people are payi

In contrast to using sites like Glassdoor which shows what people have been paid historically, I usually look at job sites & adverts to see what people are paying right now. I draw a line on a page and put a marker in the middle which I label with my current salary. Then I find job adverts and plot them either side based on the salary with a note of company/location. You then end up with an nice range and it's clear if you are being paid market rate. If all similar jobs are plotted higher on the scale than you, you're being under paid. You can then use this as evidence when discussing a raise with your current company.