diff --git a/cad/006_memory/README.md b/cad/006_memory/README.md
index 34785b8..42850b5 100644
--- a/cad/006_memory/README.md
+++ b/cad/006_memory/README.md
@@ -37,7 +37,9 @@ Whenever a transaction is executed on the CVM, Memory Consumption is calculated
 
 Memory Consumption is computed at the end of each transaction, and is defined as:
 
-`Memory Consumption = [Size of CVM state at end of transaction] - [Size of CVM state at start of transaction] 
+```
+Memory Consumption = [Size of CVM state at end of transaction] - [Size of CVM state at start of transaction] 
+```
 
 If a transaction has zero Memory Consumption, it will complete normally with no effect from the Memory Accounting subsystem
 
diff --git a/cad/010_transactions/README.md b/cad/010_transactions/README.md
index 7f09adb..54d7a53 100644
--- a/cad/010_transactions/README.md
+++ b/cad/010_transactions/README.md
@@ -112,10 +112,28 @@ Transaction results MUST be returned in a `Result` record which contains the fol
  - `:eaddr` - the Address of execution where the error was raised
  - `:mem` - Integer amount of memory consumed by the transaction (may be omitted if zero, may be negative for a refund)
  - `:juice` - Execution juice for the transaction
- - `:fee` - Total fee paid in Convex coppers, including memory cost
+ - `:fees` - Total fee paid in Convex coppers, including memory cost
 
 An an optimisation, peers MAY avoid creating `Result` records if they have no requirement to report results back to clients.
 
+### Fees
+
+Total fees for a successful transaction are calculated as:
+
+```
+(juice used + transaction base cost) * juice price + memory costs
+```
+
+See [CAD007](../007_juice) for more details on juice cost calculation.
+
+See [CAD006](../006_memory) for more details on memory cost calculation.
+
+Memory costs MUST be zero if no memory was used, or if the origin account had sufficient memory allowance to cover the increase in state size caused by the transaction.
+
+In the case of a failed transaction, memory fees MUST be zero (since state changes are rolled back)
+
+If a transaction failed signature or sequence verification, the base transaction cost is paid by the peer that submitted the erroneous transaction.
+
 ### Verification
 
 If the client trusts the peer, the returned result may be assumed as evidence that the transaction has succeeded.