diff --git a/action/protocol/execution/evm/evm.go b/action/protocol/execution/evm/evm.go
index a36a2f0434..49e33594f5 100644
--- a/action/protocol/execution/evm/evm.go
+++ b/action/protocol/execution/evm/evm.go
@@ -291,10 +291,13 @@ func ExecuteContract(
 			sharedGasFee.Mul(sharedGasFee, ps.txCtx.GasPrice)
 		}
 		totalGasFee = new(big.Int).Mul(new(big.Int).SetUint64(consumedGas), ps.txCtx.GasPrice)
-		depositLog, err = ps.helperCtx.DepositGasFunc(ctx, sm, receiver, totalGasFee, sharedGasFee)
-		if err != nil {
-			return nil, nil, err
+		if ps.helperCtx.DepositGasFunc != nil {
+			depositLog, err = ps.helperCtx.DepositGasFunc(ctx, sm, receiver, totalGasFee, sharedGasFee)
+			if err != nil {
+				return nil, nil, err
+			}
 		}
+
 	}
 
 	if err := stateDB.CommitContracts(); err != nil {
@@ -639,15 +642,6 @@ func SimulateExecution(
 	)
 
 	ctx = protocol.WithFeatureCtx(ctx)
-	// TODO: move the logic out of SimulateExecution
-	helperCtx := mustGetHelperCtx(ctx)
-	ctx = WithHelperCtx(ctx, HelperContext{
-		GetBlockHash: helperCtx.GetBlockHash,
-		DepositGasFunc: func(context.Context, protocol.StateManager, address.Address, *big.Int, *big.Int) (*action.TransactionLog, error) {
-			return nil, nil
-		},
-		Sgd: nil,
-	})
 	return ExecuteContract(
 		ctx,
 		sm,
diff --git a/api/coreservice.go b/api/coreservice.go
index 2a5cb68ea1..3ec74fad9e 100644
--- a/api/coreservice.go
+++ b/api/coreservice.go
@@ -39,6 +39,7 @@ import (
 	accountutil "github.com/iotexproject/iotex-core/action/protocol/account/util"
 	"github.com/iotexproject/iotex-core/action/protocol/execution/evm"
 	"github.com/iotexproject/iotex-core/action/protocol/poll"
+	"github.com/iotexproject/iotex-core/action/protocol/rewarding"
 	"github.com/iotexproject/iotex-core/action/protocol/rolldpos"
 	"github.com/iotexproject/iotex-core/actpool"
 	logfilter "github.com/iotexproject/iotex-core/api/logfilter"
@@ -182,6 +183,7 @@ type (
 		readCache         *ReadCache
 		messageBatcher    *batch.Manager
 		apiStats          *nodestats.APILocalStats
+		sgdIndexer        blockindex.SGDRegistry
 	}
 
 	// jobDesc provides a struct to get and store logs in core.LogsInRange
@@ -218,6 +220,13 @@ func WithAPIStats(stats *nodestats.APILocalStats) Option {
 	}
 }
 
+// WithSGDIndexer is the option to return SGD Indexer through API.
+func WithSGDIndexer(sgdIndexer blockindex.SGDRegistry) Option {
+	return func(svr *coreService) {
+		svr.sgdIndexer = sgdIndexer
+	}
+}
+
 type intrinsicGasCalculator interface {
 	IntrinsicGas() (uint64, error)
 }
@@ -1741,9 +1750,10 @@ func (core *coreService) Track(ctx context.Context, start time.Time, method stri
 }
 
 func (core *coreService) simulateExecution(ctx context.Context, addr address.Address, exec *action.Execution, getBlockHash evm.GetBlockHash) ([]byte, *action.Receipt, error) {
-	// TODO: add depositGas
 	ctx = evm.WithHelperCtx(ctx, evm.HelperContext{
-		GetBlockHash: getBlockHash,
+		GetBlockHash:   getBlockHash,
+		DepositGasFunc: rewarding.DepositGasWithSGD,
+		Sgd:            core.sgdIndexer,
 	})
 	return core.sf.SimulateExecution(ctx, addr, exec)
 }
diff --git a/chainservice/chainservice.go b/chainservice/chainservice.go
index dd6157ed82..73ad4b669f 100644
--- a/chainservice/chainservice.go
+++ b/chainservice/chainservice.go
@@ -191,6 +191,7 @@ func (cs *ChainService) NewAPIServer(cfg api.Config, plugins map[int]interface{}
 		}),
 		api.WithNativeElection(cs.electionCommittee),
 		api.WithAPIStats(cs.apiStats),
+		api.WithSGDIndexer(cs.sgdIndexer),
 	}
 
 	svr, err := api.NewServerV2(