I think this is mostly a US thing. Why use yearly salary? You’re not paid once a year, are you? Most likely once a month. Referencing monthly salary makes much more sense.
“I’m making 50k”. Great, now I have to guess - dollars? Monthly? Yearly? If yearly then what’s the monthly paycheck? Net? Gross?
Lol who would hear “I’m making 50k” and think it’s anything other than per year unless they just stepped out of a private jet…
I feel like this might be confusing only if you are under the age of 14 and have no idea how money or the world works…