diff --git a/accounting/service.proto b/accounting/service.proto
index 6f45b30..f08a312 100644
--- a/accounting/service.proto
+++ b/accounting/service.proto
@@ -1,5 +1,7 @@
 syntax = "proto3";
+
 package accounting;
+
 option go_package = "github.com/nspcc-dev/neofs-api-go/accounting";
 option csharp_namespace = "NeoFS.API.Accounting";
 
@@ -7,20 +9,30 @@ import "service/meta.proto";
 import "service/verify.proto";
 import "refs/types.proto";
 
-// Accounting is a service that provides access for accounting balance
-// information
+// The service provides methods for obtaining information
+// about the account balance in NeoFS system.
 service Accounting {
-    // Balance returns current balance status of the NeoFS user
-    rpc Balance(BalanceRequest) returns (BalanceResponse);
+    // Returns the amount of funds for the requested NeoFS account.
+    rpc Balance (BalanceRequest) returns (BalanceResponse);
 }
 
+// Message defines the request body of Balance method.
+//
+// To indicate the account for which the balance is requested, its identifier is used.
+//
+// To gain access to the requested information, the request body must be formed according
+// to the requirements from the system specification.
 message BalanceRequest {
-    // OwnerID carries user identifier in NeoFS system.
+    // Carries user identifier in NeoFS system for which the balance is requested.
     refs.OwnerID OwnerID = 1;
-    // RequestMetaHeader contains information about request meta headers (should be embedded into message)
-    service.RequestMetaHeader Meta = 98;
-    // RequestVerificationHeader is a set of signatures of every NeoFS Node that processed request (should be embedded into message)
-    service.RequestVerificationHeader Verify = 99;
+
+    // Carries request meta information. Header data is used only to regulate message
+    // transport and does not affect request execution.
+    service.RequestMetaHeader MetaHeader = 98;
+
+    // Carries request verification information. This header is used to authenticate
+    // the nodes of the message route and check the correctness of transmission.
+    service.RequestVerificationHeader VerifyHeader = 99;
 }
 
 // Decimal represents the decimal numbers.
@@ -32,7 +44,10 @@ message Decimal {
     uint32 Precision = 2;
 }
 
+// Message defines the response body of Balance method.
+//
+// The amount of funds is calculated in decimal numbers.
 message BalanceResponse {
-    // Balance contains current account balance state
+    // Carries the amount of funds on the account.
     Decimal Balance = 1;
 }
diff --git a/proto-docs/accounting.md b/proto-docs/accounting.md
index 64eea91..14d9c7c 100644
--- a/proto-docs/accounting.md
+++ b/proto-docs/accounting.md
@@ -28,8 +28,8 @@
 <a name="accounting.Accounting"></a>
 
 ### Service "accounting.Accounting"
-Accounting is a service that provides access for accounting balance
-information
+The service provides methods for obtaining information
+about the account balance in NeoFS system.
 
 ```
 rpc Balance(BalanceRequest) returns (BalanceResponse);
@@ -38,7 +38,7 @@ rpc Balance(BalanceRequest) returns (BalanceResponse);
 
 #### Method Balance
 
-Balance returns current balance status of the NeoFS user
+Returns the amount of funds for the requested NeoFS account.
 
 | Name | Input | Output |
 | ---- | ----- | ------ |
@@ -49,25 +49,32 @@ Balance returns current balance status of the NeoFS user
 <a name="accounting.BalanceRequest"></a>
 
 ### Message BalanceRequest
+Message defines the request body of Balance method.
 
+To indicate the account for which the balance is requested, its identifier is used.
+
+To gain access to the requested information, the request body must be formed according
+to the requirements from the system specification.
 
 
 | Field | Type | Label | Description |
 | ----- | ---- | ----- | ----------- |
-| OwnerID | [refs.OwnerID](#refs.OwnerID) |  | OwnerID carries user identifier in NeoFS system. |
-| Meta | [service.RequestMetaHeader](#service.RequestMetaHeader) |  | RequestMetaHeader contains information about request meta headers (should be embedded into message) |
-| Verify | [service.RequestVerificationHeader](#service.RequestVerificationHeader) |  | RequestVerificationHeader is a set of signatures of every NeoFS Node that processed request (should be embedded into message) |
+| OwnerID | [refs.OwnerID](#refs.OwnerID) |  | Carries user identifier in NeoFS system for which the balance is requested. |
+| MetaHeader | [service.RequestMetaHeader](#service.RequestMetaHeader) |  | Carries request meta information. Header data is used only to regulate message transport and does not affect request execution. |
+| VerifyHeader | [service.RequestVerificationHeader](#service.RequestVerificationHeader) |  | Carries request verification information. This header is used to authenticate the nodes of the message route and check the correctness of transmission. |
 
 
 <a name="accounting.BalanceResponse"></a>
 
 ### Message BalanceResponse
+Message defines the response body of Balance method.
 
+The amount of funds is calculated in decimal numbers.
 
 
 | Field | Type | Label | Description |
 | ----- | ---- | ----- | ----------- |
-| Balance | [Decimal](#accounting.Decimal) |  | Balance contains current account balance state |
+| Balance | [Decimal](#accounting.Decimal) |  | Carries the amount of funds on the account. |
 
 
 <a name="accounting.Decimal"></a>