Bank of Korea staff price the chip windfall at up to 0.2 points of extra core inflation

The chain the staff draw is specific about order: purchasing power rises first, on higher wages and asset prices, consumption follows, and companies pass rising costs through once demand has recovered ^[9]. Chip money enters at the first link by a different door, since higher export prices improve the terms of trade and lift real gross domestic income rather than arriving as a pay settlement ^[14], which is why the report hedges its own conclusion by allowing that the effect is limited if the income goes into savings or asset investment instead ^[15].

The number that does the work is small and close. The band in which the Bank of Korea says item-level price increases begin moving strongly in tandem is 2.5 to 2.8 per cent, most visibly in travel, lodging and dining out ^[10], a window only 0.3 points wide ^[17], and the top of the estimate for terms-of-trade income turning into consumption, 0.2 points ^[13], covers two thirds of it ^[18]. Stack the top ends and you get 0.4 points from a one-point wider output gap ^[11], 0.6 points six quarters out ^[12], and 0.2 on top, which is 0.8 in all ^[19], though you probably should not stack them, because the contemporaneous 0.1-to-0.4 range and the 0.6 figure describe the same demand shock measured at two horizons ^[11][12]. The honest version is smaller and slower, and it still lands inside the co-movement band.

Worth noticing that the error bar on the main channel is wider than the side channel being added to it: 0.1 to 0.4 points per point of output gap is a 0.3-point spread ^[11][20], against a maximum of 0.2 from the chip-income route ^[13].

This is probably wrong in one specific place, and the place is the sample. Four episodes since 2000 ^[8], with four unlike triggers in credit expansion, an export boom, rising asset prices and pent-up spending after the pandemic ^[16], is thin, and the bank concedes that the current boom differs from those domestic-consumption expansions because it runs through export and production gains ^[2]. It then writes that the situation has "considerably similar aspects" anyway ^[4], while a BOK official said signs of cost pass-through emerged in the first half and the live question is how much demand pressure builds ^[6]. Or rather, the more interesting version of the point: the report was staff material for the board that had just raised rates ^[3], and staff work ending on consumption as the swing variable puts the burden of proof on whoever wants to stop.

My read is that Korea-exposed duration is still priced off the export headline while this framework routes the same headline into core ^[5], so a curve treating August as the end of the cycle is short the 0.05 to 0.2 that the central bank has now put in writing ^[13]. The thesis fails cleanly if the escape clause holds, the income gain shows up as deposits and equity buying rather than services consumption ^[15], and core stays under 2.5 per cent through a positive output gap ^[7], in which case the windfall is a terms-of-trade event with no price tail and the August move was a one-off.