Different wire transfer systems and operators provide a variety of options relative to the immediacy and finality of settlement and the cost, value, and volume of transactions. Central bank wire transfer systems, such as the Federal Reserves Fedwire system in the United States, are more likely to be real-time gross settlement (RTGS) systems, as they provide the quickest availability of funds. This is because they post the gross (complete) entry against electronic accounts of the wire transfer system operator. Other systems, such as the Clearing House Interbank Payments System (CHIPS), provide net settlement on a periodic basis. More immediate settlement systems tend to process higher monetary value time-critical transactions, have higher transaction costs, and have a smaller volume of payments. A faster settlement process allows less time for currency fluctuations while money is in transit.