diff --git a/pkg/innerring/invoke/neofs.go b/pkg/innerring/invoke/neofs.go
index b6ace9926..e7ad54dc8 100644
--- a/pkg/innerring/invoke/neofs.go
+++ b/pkg/innerring/invoke/neofs.go
@@ -29,6 +29,11 @@ const (
 	// execution stage. Otherwise invocation will fail due to gas limit.
 	extraFee = 1_5000_0000 // 1.5 Fixed8 gas
 
+	// Different methods need different extra fee values, so with this
+	// constants let's try to minimize spent GAS of inner ring node.
+	feeHalfGas = 50_000_000     // 0.5 Fixed8 gas
+	feeOneGas  = feeHalfGas * 2 // 1.0 Fixed8 gas
+
 	checkIsInnerRingMethod = "isInnerRing"
 	innerRingListMethod    = "innerRingList"
 	chequeMethod           = "cheque"
diff --git a/pkg/innerring/invoke/netmap.go b/pkg/innerring/invoke/netmap.go
index f5100989e..7f71321f2 100644
--- a/pkg/innerring/invoke/netmap.go
+++ b/pkg/innerring/invoke/netmap.go
@@ -52,7 +52,7 @@ func SetNewEpoch(cli *client.Client, con util.Uint160, epoch uint64) error {
 		return client.ErrNilClient
 	}
 
-	return cli.Invoke(con, extraFee, setNewEpochMethod, int64(epoch))
+	return cli.Invoke(con, feeOneGas, setNewEpochMethod, int64(epoch))
 }
 
 // ApprovePeer invokes addPeer method.
@@ -61,7 +61,7 @@ func ApprovePeer(cli *client.Client, con util.Uint160, peer []byte) error {
 		return client.ErrNilClient
 	}
 
-	return cli.Invoke(con, extraFee, approvePeerMethod, peer)
+	return cli.Invoke(con, feeHalfGas, approvePeerMethod, peer)
 }
 
 // UpdatePeerState invokes addPeer method.