Due to the low circulation of coins with the lowest denomination in the market, the manufacturing cost is higher than the value of the coins themselves, and the transportation and management costs are also high, some countries have put forward this mechanism to control the loss of money, and eventually the coins with the lowest denomination will be scrapped.
Extended data:
The mechanism operates in the way of "binary, 2 abdication", that is, abdication is adopted when the mantissa is 1, 2, 6 and 7, and carry is adopted when the mantissa is 3, 4, 8 and 9.
For example, 82 yuan's total transaction amount of 2 points (abdication) will be 82 yuan after the integer, and 82 yuan's 3 points (rounding) will be 82 yuan's 5 points.
At present, eight countries have implemented or plan to implement the comprehensive payment mechanism:
Reference materials? Baidu encyclopedia-rounding integer payment mechanism