To all intents and purposes
Definition 1 of 1
Pro Tip 1/3Near Certainty
Use when something is so likely that it can be considered a fact. 
To all intents and purposes, the match has been won with that final goal.
Pro Tip 2/3Common Usage
It's a common phrase, but more often found in British English than American. 
To all intents and purposes, the British and American versions of the book are the same.
Pro Tip 3/3Formal Tone
Considered formal, it's suitable for professional and serious contexts. 
The agreement is, to all intents and purposes, binding for both parties.