A Korean tender notice carries several dates, and they are not interchangeable. The one that disqualifies most first-time bidders is not the bid deadline at all — it is a registration cut-off that can fall well before it.
| Korean | Romanised | What it means |
|---|---|---|
| 입찰참가자격등록마감일시 | ipchal chamga jagyeok deungnok magam ilsi | Deadline to have supplier qualification registration completed. Not the bid deadline — an earlier gate. |
| 입찰개시일시 | ipchal gaesi ilsi | When bid submission opens. |
| 입찰마감일시 | ipchal magam ilsi | When bid submission closes. Enforced strictly. |
| 개찰일시 | gaechal ilsi | Earliest time bids may be opened. Not necessarily when opening actually happens. |
The registration deadline comes first
Korea operates a standing supplier registration system. Rather than proving your credentials tender by tender, you register once as a competitive bidding participant and that registration is then checked against each bid.
The consequence is a separate deadline: your registration must be complete and valid by the stated cut-off. If it is not, your bid is rejected on eligibility even if you submit a perfect proposal before the bid closes. Registration is not instantaneous — documents must be verified — so a tender closing in ten days may be effectively closed to an unregistered firm already.
This is the single most common reason a newcomer's first Korean bid fails, and it has nothing to do with the quality of the bid.
Opening and closing
Submission opens at 입찰개시일시 and closes at 입찰마감일시. Electronic submission through the national system is the norm, and the closing time is enforced by the system itself — there is no discretion for a late upload. Submitting close to the deadline is a genuine operational risk rather than a stylistic preference.
개찰 is not the closing time
개찰 (gaechal) is the opening of bids. The date on the notice is the earliest point at which the contracting officer may open them, not a commitment that opening occurs then. Actual opening can be later.
This matters mainly for expectation-setting: seeing an opening date pass without an announcement does not mean anything has gone wrong. It also explains gaps that look odd at first — a tender closing in mid-August with an opening date in September is entirely normal, particularly for two-stage tenders where technical evaluation happens in between.
The consortium agreement deadline
If you are bidding as a consortium, there is a further date: the deadline for filing the joint supply agreement. It generally precedes the bid deadline. Assembling a consortium in the final days before closing usually is not viable, because the agreement itself has to be filed and accepted first.
A workable sequence
Reading the dates in the order they bind, rather than the order they are printed:
- Registration cut-off — can you clear this at all? If not, stop here.
- Consortium agreement deadline — if bidding jointly, this constrains your real planning window.
- Bid closing — your actual submission target, with deliberate margin.
- Opening — when to expect movement, understanding it may slip later.
Every listing on this site shows the posting and closing dates so you can judge the remaining window at a glance. The registration and consortium deadlines appear on the official announcement, which each result links to. For the surrounding terminology, see how to read a Korean tender notice.