Under the new system, the overbuying and overselling are different. The overselling is strictly controlled, and causes the pressure to sell on the U.S. dollar to be reduced, deftly reducing the pressure on the NT dollar to appreciate. The overselling limits are more liberal, meaning that the Central Bank's limits on the depreciation of the NT dollar are looser.
在新匯率制度之中，買超與賣超的限制不同，對賣超的限制嚴格，使美元的賣壓無形中減輕，新台幣升值的壓力也巧妙地降低；對買超的限制卻比較寬鬆，可以看出央行對新台幣貶值的限制比較寬。