Round-Trip Transactions Costs Daniel Guidotti 14 years ago Round-Trip Transactions Costs The total costs of completion of a transaction. Includes market impact cost, taxes and commissions.Random Finance Terms for the Letter SRoll OverRolloverRound LotRound-Trip Transactions CostsRound-TurnRule 144aRunRule 415Recommended for you:Round Lot Round-Turn Rule 144a Rule 415