Миль: денежная единица в тысячной доле основной валюты.

Unit of currency, worth one one thousandth of the main unit

The mill (American English) or mil (Commonwealth English, except Canada) is a unit of currency (sometimes symbolized as ₥), used in several countries as one thousandth of the base unit. In the United States, it is a notional unit equivalent to a thousandth of a United States dollar (a hundredth of a dime or a tenth of a cent). In the United Kingdom, it was proposed during the decades of discussion on decimalisation as a 1/1000 division of sterling's pound. While this system was never adopted in the United Kingdom, the currencies of some British or formerly British territories did adopt it, such as the Palestine pound and the Maltese lira. The term comes from the Latin "millesimum", meaning "thousandth part".

Property taxes are also expressed in terms of mills per dollar assessed (a mill levy, known more widely in the US as a "mill rate"). For instance, with a millage rate of 2.8₥, a house with an assessment of $100000 would be taxed 1=(2.8 × 100,000) = 280,000₥, or $280.00. The term is often spelled "mil" when used in this context. With respect to property taxes, a "mil" is also slang for one million units of currency, especially as a rate expressed per mille "‰", as one million units of currency per milliard on the long scale of numeration, that is, 1,000,000 per 1,000,000,000 currency units of assessed valuation on all private property throughout the "mill yard" or property tax levy district.

The term mill is often used in finance, particularly in conjunction with equity market microstructure. For example, a broker that charges 5 mils per share is taking in $5 every 1000 shares traded. Additionally, in finance the term is sometimes spelled "mil". Cf. basis point. Some exchanges allow prices to be accounted in ten thousandths of a dollar ($29.4125 = 29,412.5₥ for example). This last digit is sometimes called a "decimill" or "deci mill", but no exchange officially recognizes the term.

Mark Twain introduced a fictional elaboration of the mill in his 1889 novel A Connecticut Yankee in King Arthur's Court. When Hank Morgan, the American time traveler, introduces decimal currency to Arthurian Britain, he has it denominated in cents, mills, and "milrays", or tenths of a mill (the name perhaps suggested by "myriad", meaning ten thousand or by the Portuguese and Brazilian milreis).

Mills are or were formerly used in some cities to express property tax rates, in the same manner as in the U. S.

Proposed on several occasions as a means of decimalising sterling under the "pound and mil" system suggested in 1855 by Sir William Brown MP, the mil was occasionally used in accounting. The 1862 report from the Select committee on Weights and Measures noted that the Equitable Insurance Company had been keeping accounts in mils (rather than in shillings and pence) for such purposes for over 100 years. Such a unit of a thousandth of a pound would have also been similar in value to the farthing coin (worth 1/960 of a pound). By the time British currency was decimalised in 1971, the farthing had been demonetised eleven years prior, in part due to having its value eroded by inflation; thus, the mil was no longer necessary.

The Maltese lira was decimalised in 1972 on the "pound and mil" system. The coinage included denominations of 2 mils, 3 mils, and 5 mils from 1972 to 1994, with 10 mils being equal to one cent. While prices could still be marked using mils until 2008, when the country switched to the euro, in practice these were rounded off for accounting purposes.

The Palestine pound, used as the currency of the British Mandate for Palestine from 1927 to 1948, was divided into 1,000 mils. Its successor currencies, the Israeli lira and the Jordanian dinar retained the 1/1000 division, respectively named the pruta and fils. The Israeli pruta lasted until 1960, and the Jordanian fils until 1992.

Between 1863 and 1866 the one mil coin was the lowest denomination issued by the British government in Hong Kong; it was eliminated due to its unpopularity.

The Cypriot pound was decimalised using the "pound and mil" system in 1955, and lasting until 1983. However, coins smaller than 5 mils ceased being used in the mid 1960s. When switched to cents in 1983, a ½ cent coin was struck that was abolished a few years later.

Coins are minted in 10, 20, 50, and 100 millimes, thousandths of a Tunisian dinar. Older coins of 5 millimes remain in circulation.

The Egyptian pound is divided into 1,000 milliemes, 10 milliemes equal 1 piastre (25 piastres is the smallest currently minted coin). The Tunisian dinar is divided into 1,000 millimes (10 millimes is the smallest currently minted coin). The Kuwaiti dinar, Bahraini dinar, Jordanian dinar, and Iraqi dinar are divided into 1,000 fils. The smallest coins currently minted are 5 fils (Kuwait and Bahrain), 1/4 dinar (Jordan), 25 dinars (Iraq). The Omani rial is divided into 1,000 baisa. The Libyan dinar has been divided into 1,000 dirhams since 1971. The Japanese yen was formerly divided into 1,000 rin. An early proposed (but not accepted) design for the 1 rin coin used "1 mil" in the Romanized text.