Does last hitting provide more experience?

I know last hitting gives you the gold for the kill, but what about experience?

Is there any difference between last hitting a creep or standing next to it, in regards of experience? What about Heroes and structures?

Last hitting creeps gives you no extra experience. Experience is shared equally among all heroes that were the enemy of that unit in a 1500 area, even if they're already level 25 or if they never even saw the unit. An exception to this is if you are outside of the experience AoE. If you're farther than 1500 away and kill it, then you will get a share of the experience where you normally wouldn't.

Heroes give experience to all people in a 1500 area based on the number of people and the fallen hero's level as well as extra experience to the person that last hit them based on a somewhat complicated formula. A table of the AoE experience and the formula are in this wiki page.

No,last hitting doesn't provide bonus experience as it does bonus gold.

If it did,the carries would outlevel their supports very quickly,which is not the case unless support gets out of exp range for pulling/stacking/warding.

Common misconception are denied creeps that divide 18 exp to enemy heroes within 1200 range rather than 62\41 exp...it makes it look like you get less exp because you lose the last hit.

More on experience and last hitting/denying