Up to date and up-to-date are phrases that involve making things current.
- Up to date is used as an adverb.
- Up-to-date is used as an adjective.
What is the correct way to write up to date?
When it comes after the noun, the compound adjective usually doesn't get a hyphen. So, we say an easy-to-remember number, but the number is easy to remember. Same goes for up to date—if it's before a noun it needs a hyphen. A document is up to date but it's an up-to-date document.
What is up to date information?
1 : extending up to the present time : including the latest information up-to-date maps. 2 : abreast of the times : modern up-to-date methods.