Could someone explain to me the diff between "desired annual base" and "desired annual total compensation"?

I'm applying for a role in finance and would like to know what is typically the range gap when filling out the two 'desires' - if any?

usa jobs
usa jobs resume
usa hotel jobs
usajobs
usa jobs federal government
usa job in ksa
usa jobs
usa jobs login
usa jobs gov
usajobs.gov
www.usajobs.gov
usajobs.com
usajobs
usajobs.gov official