The government will seek to postpone cryptocurrency income taxation by another two years to 2029, Finance Minister Lee Hyoung-il said Thursday, renewing debate over tax fairness and policy credibility after three previous postponements.

Lee said more time is needed to secure overseas transaction data and refine the rules. But the reversal, just a month after the government reiterated its commitment to proceeding in January, has drawn criticism over policy predictability and possible political motivations.

At a briefing, Lee said the government would work with the National…