Bank of Korea warns domino price hikes at 30-plus companies could prolong inflation

At the pace of the first nine months, this year ends with about 40 price-increase announcements in consumer-price categories, roughly a quarter more than last year's preliminary 32 ^[2][1]. This year is running faster. The count alone does not show a chain reaction, and the bank says the count is not its main concern. It is watching how quickly one company's adjustment spreads to competitors and into other product categories, because a chain of that kind could make inflation pressure last longer than expected ^[6][5].

Franchise coffee shows the pattern in one category. The Venti raised major drinks by 100 to 500 won in the first half, Mega MGC Coffee added 200 won to three items in June and Mammoth Coffee put 200 won on iced Americanos and other drinks in August ^[7]. Yang Junsok, an economics professor at the Catholic University of Korea, said: "When one company has no choice but to raise prices, that is when everyone raises them together." ^[8]

A BOK official put the cause on inputs. "This appears to reflect the growing burden of raw material costs such as naphtha and of shipping costs," the official said, after naming clothing and food as the focus of the bank's monitoring ^[9]. Oil adds to that bill. Dubai crude, around $100 after touching $128 on the 16th, is about 19% above the $84 Brent price the BOK assumed for the second half in its August outlook ^[10][11][2]. It is also above the $91 the bank used for a worse Middle East ^[11]. The two benchmarks are different grades, so the gap is approximate.

For timing, the pessimistic case tells you more. With Brent at $95 in the second half, the BOK estimated consumer inflation would run 0.1 percentage point above its baseline this year and 0.4 point above it next year ^[12]. The effect is four times larger in 2027 ^[3]. Crude today sits above the price that scenario assumed ^[10][12].

The won adds its own push. It went from the 1,340 range in early September to the 1,380 range by mid-month, a move of about 3%, before easing to the 1,350 range ^[13][4]. Forecasts of a stronger dollar are returning on rising Treasury yields and the chance of further Federal Reserve increases, and Morgan Stanley has dropped its dollar-weakness call for a DXY of 104 by mid-2027 ^[14].

The report does not say where the policy rate stands or when it is next set, so any read on rates is inference. If the hikes are one round of pass-through from naphtha, freight and a weaker won, they fade once oil and the currency settle. Should they start moving inflation expectations, the second-round effects the BOK says it is focused on get larger ^[15]. A senior official at a state-funded research institute said such effects can emerge when expectations are unstable ^[16]. The simplest path is crude staying near $100, in which case the bank's own numbers put the heavier cost in 2027 ^[12][3].

I think a central bank that tells reporters the momentum "has been building" is giving itself reasons to delay any rate relief ^[1]. The counter-case sits in the same scenario table: 0.1 point on this year's inflation is small, and 30-odd companies is close to last year's full-year total ^[12][2]. The view is wrong if the won settles back near 1,340, crude drifts toward the $84 assumption and the list of hikes stalls near last year's 32 ^[13][11][2].