[RPG] Do multiple sources of counting as one size larger for carrying capacity stack

dnd-5eencumbrancegoliathstacking

I am currently mocking up a Goliath Barbarian, and was wondering if there is a limit to the amount of sources of "You count as if you were one size larger for the purpose of determining your carrying capacity" that stack.

From prior browsing, I've found that Goliath's Powerful Build & Totem Barbarian's Bear Aspect feature stack in that regard, but could you stack, for example:

  • Powerful Build (innate Goliath feature)
  • 6th level Totem Barbarian Bear Aspect
  • Brawny feat

Essentially, could you double your carrying capacity and lift/pull capacity thrice?

Best Answer

As you know, Powerful Build and the Bear totem ability stack. For the same reasons, Brawny and the Bear totem ability also stack. However, Brawny and Powerful Build won't stack.

You count as if you were one size larger for the purpose of determining your carrying capacity.

Your size is Medium. When you get Powerful Build, you count as Large for the purpose of determining your carrying capacity. Then, when you get Brawny, you are still Medium, and you count as Large for the purpose of determining your carrying capacity again.

If you had found a way to actually become Large, Brawny or Powerful Build would make you count as Huge for the purposes of carrying capacity, but as long as you're still Medium, the best either of them can do is make you count as Large for the purposes of carrying capacity.