This is the 9638th most frequent Korean word.
계약까지
"Until the contract" or "up to the contract."
Here, 계약까지 is used to indicate the progression up to the contract stage.
그들은 회사 합병에 대해 논의하고 계약까지 진행되었습니다.
They discussed the merger and proceeded to the contract.
This usage emphasizes the process leading up to the contract.
계약까지의 모든 절차를 다 이해했니?
Did you understand all the procedures up to the contract?
In this case, 계약까지 functions to imply the culmination of trust leading to a formal contract agreement.