Is the Coinone voucher the same as the invite code?

They are entirely separate. The invite code goes in once at registration and pays a one-off reward. The voucher is something you issue yourself afterwards, and it drops the trading fee on every listing from 0.20% to 0.04%. At any regular volume the voucher is worth several times the reward, so take both.

Does the Coinone invite code keep paying after signup?

No. Both parties receive a reward once the invited user completes verification and starts trading, and nothing continues after that. None of the four licensed Korean exchanges shares trading fees with an inviter. The way to keep reducing cost at Coinone is the voucher, which takes the fee to 0.04%.

Can I add an invite code after registering?

No. The code has to be entered during signup. Coinone binds the invite relationship at account creation.

Coinone referral code

The code below is one we hold. Terms last checked against Coinone's published schedule on Aug 14, 2026.

Invite code

Not carried by any link. You have to type this in during signup — a signup button on its own never applies it.

Signup bonus

₩4,000

Effective taker

0.20%

We earn a commission when you register through a link on this site. It costs you nothing extra. The referral discount is applied to your fees regardless. Information only. Not investment advice.

What the Coinone code actually gives you

Coinone's invite code pays a small reward to both parties once the invited user completes verification and starts trading. That is the whole of it. A one-off payment, like every other licensed Korean venue. Nothing continues afterwards.

So the code is not the reason to pick Coinone, and the invite reward is small enough that it should not decide anything. What should is the fee, and specifically the gap between the two rates Coinone charges.

The base rate is 0.20%, not the 0.04% commonly quoted. That lower figure is the voucher rate: free to issue, applied across all listings, and entirely separate from anything the invite code does. Issuing it is worth several times the signup reward within the first month of any regular trading, which makes it the thing to do first and the code an afterthought.

How to make sure the Coinone code applies

Confirm you meet the Korean residency requirement
A Korean mobile number, Korean identity verification and a bank account in your own name at a Korean bank are all required. There is no alternative route.
Issue the fee voucher after signing up
The voucher, not the invite code, is where the money is at Coinone. Issuing it drops the fee on every listing from 0.20% to 0.04% immediately. Skip it and you pay the base rate.
Enter the code during registration
Coinone shows an invite code field on the signup screen. Confirm the code is entered there before completing registration; it cannot be added afterwards.
Complete identity verification and start trading
The signup reward is released once verification is complete and you begin trading. Amounts and qualifying conditions are revised periodically. The figure shown in the app when you register is the one that applies.