to become due

• 到期日

  expiration date

• 到期归还。

  Return it by the due date.

• 到期债务

  expired debt

• 到期未付票据

  expired unused voucher

• 到期了

  expired

• 合同快到期了。

  The contract is up for renewal soon.

• 合同已经到期了。

  The contract has expired.

• 合同尚未到期。

  The contract has not yet expired.