What to do when fuel has exhausted and we are denied landing by ATC? If we were denied landing it means we are close to the runway, and thus if we are intending for a forced landing, the runway could have been the safest option. With time being a constraint, what call should be made to ATC?
You should have declared an emergency long before your fuel was exhausted. If you haven't yet, do it now.
You are authorized to do whatever it takes to get the aircraft down, worry about regulations when you are alive enough to do it. Until then, ATC will clear out anything around you, just say "declaring an emergency" and then fly the plane regardless of what ATC "authorizes" you to do or not.
The literal call to ATC will be:
KXYZ, Unable, emergency, landing now.
But only if you have time to make the call.
In addition to Ron Beyer’s answer, no controller will deny a request from a pilot who declares an emergency. If they ever did, they would be fired so fast it would make your head spin. In the event of a physical hindrance ie only one runway on site which is closed, listed on NOTAMS and impeded, ie equipment, workers, etc, they would ADVISE the pilot of this but the decision to proceed is the domain of the pilot alone.