- Toward and towards are two acceptable ways of spelling the same preposition.
- Toward is the preferred spelling in the United States and Canada.
- Towards is the preferred spelling in the United Kingdom and Australia.
Some words have multiple correct spellings. You probably already know this is true for certain verbs (e.g., spell vs. spelt) and several nouns (e.g., color, favor, neighbor); prepositions aren’t immune to it either.