diff --git a/agents/dmtagent_it_test.go b/agents/dmtagent_it_test.go
index 8ec97b1ba..12d467125 100644
--- a/agents/dmtagent_it_test.go
+++ b/agents/dmtagent_it_test.go
@@ -623,7 +623,7 @@ func TestDmtAgentCdrs(t *testing.T) {
 		if cdrs[0].Usage != "610" {
 			t.Errorf("Unexpected CDR Usage received, cdr: %+v ", cdrs[0])
 		}
-		if cdrs[0].Cost != 0.795 {
+		if cdrs[0].Cost != 0.7565 {
 			t.Errorf("Unexpected CDR Cost received, cdr: %+v ", cdrs[0])
 		}
 	}
diff --git a/apier/v1/smgenericv1_it_test.go b/apier/v1/smgenericv1_it_test.go
index 56c019d3e..6afd87eb4 100644
--- a/apier/v1/smgenericv1_it_test.go
+++ b/apier/v1/smgenericv1_it_test.go
@@ -151,7 +151,7 @@ func TestSMGV1GetMaxUsage(t *testing.T) {
 	var maxTime float64
 	if err := smgV1Rpc.Call("SMGenericV1.GetMaxUsage", setupReq, &maxTime); err != nil {
 		t.Error(err)
-	} else if maxTime != 2690 {
+	} else if maxTime != 2700 {
 		t.Errorf("Calling ApierV2.MaxUsage got maxTime: %f", maxTime)
 	}
 }
diff --git a/engine/callcost.go b/engine/callcost.go
index 502bd0754..fcfd59006 100644
--- a/engine/callcost.go
+++ b/engine/callcost.go
@@ -201,20 +201,23 @@ func (cc *CallCost) Round() {
 			ts.RateInterval.Rating.RoundingMethod)
 		correctionCost := roundedCost - cost
 		//log.Print(cost, roundedCost, correctionCost)
-		roundInc := &Increment{
-			Cost:        correctionCost,
-			BalanceInfo: inc.BalanceInfo,
+		if correctionCost != 0 {
+			ts.RoundIncrement = &Increment{
+				Cost:        correctionCost,
+				BalanceInfo: inc.BalanceInfo,
+			}
+			totalCorrectionCost += correctionCost
+			ts.Cost += correctionCost
 		}
-		totalCorrectionCost += correctionCost
-		ts.Cost += correctionCost
-		ts.RoundIncrements = append(ts.RoundIncrements, roundInc)
 	}
 	cc.Cost += totalCorrectionCost
 }
 
 func (cc *CallCost) GetRoundIncrements() (roundIncrements Increments) {
 	for _, ts := range cc.Timespans {
-		roundIncrements = append(roundIncrements, ts.RoundIncrements...)
+		if ts.RoundIncrement != nil && ts.RoundIncrement.Cost != 0 {
+			roundIncrements = append(roundIncrements, ts.RoundIncrement)
+		}
 	}
 	return
 }
diff --git a/engine/calldesc.go b/engine/calldesc.go
index c70f8b4eb..ce2bd49e0 100644
--- a/engine/calldesc.go
+++ b/engine/calldesc.go
@@ -682,9 +682,12 @@ func (cd *CallDescriptor) debit(account *Account, dryRun bool, goNegative bool)
 	}
 	if cd.PerformRounding {
 		cc.Round()
-		rcd := cc.CreateCallDescriptor()
-		rcd.Increments = cc.GetRoundIncrements()
-		rcd.RefundRounding()
+		roundIncrements := cc.GetRoundIncrements()
+		if len(roundIncrements) != 0 {
+			rcd := cc.CreateCallDescriptor()
+			rcd.Increments = roundIncrements
+			rcd.RefundRounding()
+		}
 	}
 	//log.Printf("OUT CC: ", cc)
 	return
diff --git a/engine/timespans.go b/engine/timespans.go
index dea4af215..34aec558b 100644
--- a/engine/timespans.go
+++ b/engine/timespans.go
@@ -36,7 +36,7 @@ type TimeSpan struct {
 	RateInterval                                               *RateInterval
 	DurationIndex                                              time.Duration // the call duration so far till TimeEnd
 	Increments                                                 Increments
-	RoundIncrements                                            Increments
+	RoundIncrement                                             *Increment
 	MatchedSubject, MatchedPrefix, MatchedDestId, RatingPlanId string
 	CompressFactor                                             int
 	ratingInfo                                                 *RatingInfo
diff --git a/sessionmanager/session.go b/sessionmanager/session.go
index 0be6f663c..31942cfdf 100644
--- a/sessionmanager/session.go
+++ b/sessionmanager/session.go
@@ -230,11 +230,14 @@ func (s *Session) SaveOperations() {
 		firstCC.Timespans.Compress()
 
 		firstCC.Round()
-		cd := firstCC.CreateCallDescriptor()
-		cd.Increments = firstCC.GetRoundIncrements()
-		var response float64
-		if err := s.sessionManager.Rater().RefundRounding(cd, &response); err != nil {
-			utils.Logger.Err(fmt.Sprintf("<SM> ERROR failed to refund rounding: %v", err))
+		roundIncrements := firstCC.GetRoundIncrements()
+		if len(roundIncrements) != 0 {
+			cd := firstCC.CreateCallDescriptor()
+			cd.Increments = roundIncrements
+			var response float64
+			if err := s.sessionManager.Rater().RefundRounding(cd, &response); err != nil {
+				utils.Logger.Err(fmt.Sprintf("<SM> ERROR failed to refund rounding: %v", err))
+			}
 		}
 		var reply string
 		err := s.sessionManager.CdrSrv().LogCallCost(&engine.CallCostLog{
diff --git a/sessionmanager/smg_session.go b/sessionmanager/smg_session.go
index 019cc5cbc..7d6238ec5 100644
--- a/sessionmanager/smg_session.go
+++ b/sessionmanager/smg_session.go
@@ -205,11 +205,14 @@ func (self *SMGSession) saveOperations() error {
 	}
 	firstCC.Timespans.Compress()
 	firstCC.Round()
-	cd := firstCC.CreateCallDescriptor()
-	cd.Increments = firstCC.GetRoundIncrements()
-	var response float64
-	if err := self.rater.RefundRounding(cd, &response); err != nil {
-		return err
+	roundIncrements := firstCC.GetRoundIncrements()
+	if len(roundIncrements) != 0 {
+		cd := firstCC.CreateCallDescriptor()
+		cd.Increments = roundIncrements
+		var response float64
+		if err := self.rater.RefundRounding(cd, &response); err != nil {
+			return err
+		}
 	}
 
 	var reply string
diff --git a/sessionmanager/smgeneric.go b/sessionmanager/smgeneric.go
index 62736581c..f9e4e27a7 100644
--- a/sessionmanager/smgeneric.go
+++ b/sessionmanager/smgeneric.go
@@ -278,11 +278,14 @@ func (self *SMGeneric) ChargeEvent(gev SMGenericEvent, clnt *rpc2.Client) (maxDu
 			}
 		}
 		cc.Round()
-		cd := cc.CreateCallDescriptor()
-		cd.Increments = cc.GetRoundIncrements()
-		var response float64
-		if err := self.rater.RefundRounding(cd, &response); err != nil {
-			utils.Logger.Err(fmt.Sprintf("<SM> ERROR failed to refund rounding: %v", err))
+		roundIncrements := cc.GetRoundIncrements()
+		if len(roundIncrements) != 0 {
+			cd := cc.CreateCallDescriptor()
+			cd.Increments = roundIncrements
+			var response float64
+			if err := self.rater.RefundRounding(cd, &response); err != nil {
+				utils.Logger.Err(fmt.Sprintf("<SM> ERROR failed to refund rounding: %v", err))
+			}
 		}
 
 		var reply string