COFER
The IMF database on the currency composition of official reserves, the source of figures on the share of the dollar, the euro and other currencies.
Short for Currency Composition of Official Foreign Exchange Reserves. Central banks report voluntarily which currencies they hold reserves in; country-level data stay confidential and only aggregate shares are published. This is where figures on the dollar’s share come from. One caveat matters: quarterly changes are partly explained not by purchases and sales but by revaluation at market rates, and gold is not counted in this database at all.
Defectal and acmetal
Terms from the 2009 article: “defectal” is capital resting on a flawed world currency, “acmetal” capital resting on a sound one, from the Greek acme, the highest point.
Coinages from the 2009 article, formed on the pattern of “capital”. A defectal is defective capital operating with a defective world currency; an acmetal is capital on a currency without that defect, from the Greek ἀκμή, “edge, the highest point of flourishing”, the word classical authors used for the peak of development. Between them stands the transital, an intermediate stage on a partly corrected currency, from the Latin transitus, “passage”. The corresponding orders are named defectalism, transitalism and acmetalism.
Devaluation
From the Latin de- (“lowering”) and valere (“to be worth”): an official reduction of the exchange rate by decision of the authorities rather than by the market.
Built from the Latin prefix de-, denoting reduction, and the verb valere, “to be worth, to have force”. Strictly, devaluation is an administrative act: the authorities announce a new, lower rate, whereas a market weakening is called depreciation. For Kazakhstan the distinction carries weight. The collapses of 1999, 2009 and 2014 were National Bank decisions on a new corridor, while after August 2015 the word has been used loosely: since then the rate has been set by the market.
Digital tenge
A third form of the national currency alongside cash and bank deposits: issued by the central bank, with payments that can be programmed.
A central bank digital currency is a third form of national money alongside banknotes and balances in commercial banks. It differs from an ordinary transfer in that the obligation is direct, owed by the central bank, and the record is kept on its platform. Its chief practical property is programmability: a condition of spending can be attached to the money, which is then released only when the terms of a smart contract are met. In Kazakhstan the digital tenge was recognised as a form of the national currency in 2025 and is used above all in budget spending.
Inflation targeting
A monetary regime in which the central bank answers for an inflation goal while the market sets the exchange rate.
From the English target. The central bank publicly announces a goal for inflation and answers for it, steering the policy rate, while the exchange rate is released and formed by the market. Kazakhstan moved to this regime on August 20, 2015, abandoning the currency corridor. The logic of the move is that with open capital flows a country cannot hold both the exchange rate and prices at once: it has to choose what it answers for.
International reserves
The stock of foreign currency, gold and claims with which a central bank meets external obligations and smooths the exchange rate.
The external assets at a central bank’s disposal: foreign currency and securities denominated in it, monetary gold, the reserve position at the IMF and special drawing rights. The purpose is twofold — to pay a country’s external obligations and to smooth exchange-rate swings. Gross reserves and net foreign-exchange assets are counted separately, which is why figures differ between reports. The share of gold in the portfolio is a question of risk management in its own right: the metal pays no interest and moves with its own price, but it does not depend on anyone else’s jurisdiction.
mBridge
A platform for cross-border settlement in central bank digital currencies, without correspondent banks.
A cross-border settlement platform on a distributed ledger, grown out of a project by the central banks of Hong Kong and Thailand, later joined by the People’s Bank of China and the central bank of the United Arab Emirates. The name denotes a bridge between several central bank currencies. The point is to remove the chain of correspondent banks: payment moves directly between participants and the currencies are exchanged on the platform itself. The Bank for International Settlements, which had been the coordinator, left the project in October 2024; the overwhelming share of volume is in the digital renminbi.
Special drawing rights
The IMF’s unit of account, created in 1969; its value is calculated from a basket of five currencies.
Created by the International Monetary Fund in 1969 as a supplement to countries’ official reserves, when the contradictions of the Bretton Woods system had become visible. This is not a currency in the everyday sense: one cannot pay with it in a shop; it serves as a unit of account and as a claim on freely usable currency from other members. Its value is set by a basket: since August 2022 the dollar accounts for 43.38 per cent, the euro 29.31, the renminbi 12.28, the yen 7.59 and the pound 7.44.
Tenge
From the Turkic teñge — a coin, a measure; the Russian word for money, dengi, comes from the same root. The name was chosen to anchor the new state in the pre-Mongol monetary tradition of the steppe.
The word goes back to the Turkic teñge (tanga, denge in various languages), meaning a coin, a measure, a balance; the Russian dengi entered from the same root through Turkic intermediaries in the fourteenth century. The name was chosen deliberately: work on the first banknotes began with archive material on the circulation of money in Kazakhstan in the early period of its history, and the currency’s name tied the new statehood to the pre-Mongol monetary tradition of the steppe. Those who took part recall that as a name for paper money the word circulated in the Mongol period of China and in the Golden Horde. A hundredth of a tenge is a tiyn, from the Kazakh word for a squirrel pelt, an old unit of barter; the first tiyn of 1993 were printed on paper because the mint was not ready in time.