diff --git a/accounts/accounts.go b/accounts/accounts.go
index 3914dafdc..01d86eb7d 100644
--- a/accounts/accounts.go
+++ b/accounts/accounts.go
@@ -20,10 +20,12 @@ package accounts
 
 import (
 	"fmt"
+	"time"
 
 	"github.com/cgrates/cgrates/config"
 	"github.com/cgrates/cgrates/engine"
 	"github.com/cgrates/cgrates/utils"
+	"github.com/ericlagergren/decimal"
 )
 
 // NewAccountS instantiates the AccountS
@@ -126,7 +128,38 @@ func (aS *AccountS) accountProcessEvent(acnt *utils.AccountProfile,
 		aS.cfg.AccountSCfg().AttributeSConns, aS.cfg.AccountSCfg().RateSConns); err != nil {
 		return
 	}
-	fmt.Println(blncOpers)
+	usage := utils.NewDecimal(int64(72*time.Hour), 0)
+	var usgEv time.Duration
+	if usgEv, err = cgrEv.FieldAsDuration(utils.Usage); err != nil {
+		if err != utils.ErrNotFound {
+			return
+		}
+		// not found, try at opts level
+		if usgEv, err = cgrEv.OptAsDuration(utils.MetaUsage); err != nil {
+			if err != utils.ErrNotFound {
+				return
+			}
+			err = nil
+		} else { // found, overwrite usage
+			usage.Big = decimal.New(int64(usgEv), 0)
+		}
+	} else {
+		usage.Big = decimal.New(int64(usgEv), 0)
+	}
+
+	for _, blncOper := range blncOpers {
+		if usage.Big.Cmp(decimal.New(0, 0)) == 0 {
+			return // no more debit
+		}
+		var dbted *utils.Decimal
+		if dbted, _, err = blncOper.debitUsage(usage, cgrEv); err != nil {
+			if err == utils.ErrFilterNotPassingNoCaps {
+				err = nil
+				continue
+			}
+		}
+		usage.Big = utils.SubstractBig(usage.Big, dbted.Big)
+	}
 	return
 }
 
diff --git a/accounts/libaccounts.go b/accounts/libaccounts.go
index 44c89031c..14a695ad3 100644
--- a/accounts/libaccounts.go
+++ b/accounts/libaccounts.go
@@ -43,6 +43,12 @@ func newAccountBalanceOperators(acnt *utils.AccountProfile,
 	var cncrtBlncs []*concreteBalance
 	blncOpers = make([]balanceOperator, len(blnCfgs))
 	for i, blnCfg := range blnCfgs {
+		if blnCfg.Type == utils.MetaConcrete {
+			blncOpers[i] = newConcreteBalanceOperator(blnCfg,
+				fltrS, connMgr, attrSConns, rateSConns)
+			cncrtBlncs = append(cncrtBlncs, blncOpers[i].(*concreteBalance))
+			continue
+		}
 		if blncOpers[i], err = newBalanceOperator(blnCfg, cncrtBlncs, fltrS, connMgr,
 			attrSConns, rateSConns); err != nil {
 			return
diff --git a/utils/cgrevent.go b/utils/cgrevent.go
index 928c817e1..2b09270c4 100644
--- a/utils/cgrevent.go
+++ b/utils/cgrevent.go
@@ -56,6 +56,15 @@ func (ev *CGREvent) FieldAsString(fldName string) (val string, err error) {
 	return IfaceAsString(iface), nil
 }
 
+// OptAsString returns an option as string
+func (ev *CGREvent) OptAsString(optName string) (val string, err error) {
+	iface, has := ev.Opts[optName]
+	if !has {
+		return "", ErrNotFound
+	}
+	return IfaceAsString(iface), nil
+}
+
 // FieldAsTime returns a field as Time instance
 func (ev *CGREvent) FieldAsTime(fldName string, timezone string) (t time.Time, err error) {
 	iface, has := ev.Event[fldName]
@@ -76,6 +85,16 @@ func (ev *CGREvent) FieldAsDuration(fldName string) (d time.Duration, err error)
 	return IfaceAsDuration(iface)
 }
 
+// OptAsDuration returns an option as Duration instance
+func (ev *CGREvent) OptAsDuration(optName string) (d time.Duration, err error) {
+	iface, has := ev.Event[optName]
+	if !has {
+		err = ErrNotFound
+		return
+	}
+	return IfaceAsDuration(iface)
+}
+
 // FieldAsFloat64 returns a field as float64 instance
 func (ev *CGREvent) FieldAsFloat64(fldName string) (f float64, err error) {
 	iface, has := ev.Event[fldName]
diff --git a/utils/consts.go b/utils/consts.go
index 8b655ee1a..1f6bb1a39 100755
--- a/utils/consts.go
+++ b/utils/consts.go
@@ -953,6 +953,7 @@ const (
 	MetaCDR               = "*cdr"
 	MetaExporterIDs       = "*exporterIDs"
 	MetaAsync             = "*async"
+	MetaUsage             = "*usage"
 )
 
 // Migrator Action