Come into effect
Definition 1 of 1
Pro Tip 1/3New Beginnings
Used when something is being introduced for the first time or officially starting. 
The traffic regulation will come into effect from the first of next month.
Pro Tip 2/3Future Action
Indicates a future date when something will start, not immediately. 
The employee benefits package will come into effect once the new fiscal year begins.
Pro Tip 3/3Official Decisions
Often related to laws, rules, policies, or decisions made by authorities. 
After the vote, the committee announced the changes would come into effect in two weeks.