I know that "My salary is ten thousand dollars." is grammatically correct.
Ten thousand dollars is my salary. This sounds natural to me
Ten thousand dollars are my salary. Does this sound correct?
To me, no. Because it refers to a unit (singular) not plural.
What do you think ...?
Does it have something to do with BrE and AmE?
Thanks a bundle
[Not a teacher]
No, "are" does not sound correct. It is not correct.
I will leave the BrE and the AmE to someone else as I have no idea what they mean.