diff --git a/transaction.go b/transaction.go
index f78715d8c1..26d7df258b 100644
--- a/transaction.go
+++ b/transaction.go
@@ -21,12 +21,13 @@ data          ops           *
 signature     signature    64 bytes
 */
 
-var StepFee   *big.Int = new(big.Int)
-var TxFee     *big.Int = new(big.Int)
-var MemFee    *big.Int = new(big.Int)
-var DataFee   *big.Int = new(big.Int)
-var CryptoFee *big.Int = new(big.Int)
-var ExtroFee  *big.Int = new(big.Int)
+var StepFee     *big.Int = new(big.Int)
+var TxFee       *big.Int = new(big.Int)
+var ContractFee *big.Int = new(big.Int)
+var MemFee      *big.Int = new(big.Int)
+var DataFee     *big.Int = new(big.Int)
+var CryptoFee   *big.Int = new(big.Int)
+var ExtroFee    *big.Int = new(big.Int)
 
 var Period1Reward *big.Int = new(big.Int)
 var Period2Reward *big.Int = new(big.Int)
@@ -89,27 +90,30 @@ func (tx *Transaction) Serialize() string {
 func InitFees() {
   // Base for 2**60
   b60 := new(big.Int)
-  b60.Exp(big.NewInt(2), big.NewInt(60), big.NewInt(0))
+  b60.Exp(big.NewInt(2), big.NewInt(64), big.NewInt(0))
   // Base for 2**80
   b80 := new(big.Int)
   b80.Exp(big.NewInt(2), big.NewInt(80), big.NewInt(0))
 
-  StepFee.Mul(b60, big.NewInt(4096))
+  StepFee.Div(b60, big.NewInt(64))
   //fmt.Println("StepFee:", StepFee)
 
-  TxFee.Mul(b60, big.NewInt(524288))
+  TxFee.Exp(big.NewInt(2), big.NewInt(64), big.NewInt(0))
   //fmt.Println("TxFee:", TxFee)
 
-  MemFee.Mul(b60, big.NewInt(262144))
+  ContractFee.Exp(big.NewInt(2), big.NewInt(64), big.NewInt(0))
+  //fmt.Println("ContractFee:", ContractFee)
+
+  MemFee.Div(b60, big.NewInt(4))
   //fmt.Println("MemFee:", MemFee)
 
-  DataFee.Mul(b60, big.NewInt(16384))
+  DataFee.Div(b60, big.NewInt(16))
   //fmt.Println("DataFee:", DataFee)
 
-  CryptoFee.Mul(b60, big.NewInt(65536))
+  CryptoFee.Div(b60, big.NewInt(16))
   //fmt.Println("CrytoFee:", CryptoFee)
 
-  ExtroFee.Mul(b60, big.NewInt(65536))
+  ExtroFee.Div(b60, big.NewInt(16))
   //fmt.Println("ExtroFee:", ExtroFee)
 
   Period1Reward.Mul(b80, big.NewInt(1024))