diff --git a/core/lib/zksync_core/src/api_server/web3/backend_jsonrpc/namespaces/zks.rs b/core/lib/zksync_core/src/api_server/web3/backend_jsonrpc/namespaces/zks.rs
index c0f80009dda..097dd047a77 100644
--- a/core/lib/zksync_core/src/api_server/web3/backend_jsonrpc/namespaces/zks.rs
+++ b/core/lib/zksync_core/src/api_server/web3/backend_jsonrpc/namespaces/zks.rs
@@ -146,7 +146,12 @@ impl<G: L1GasPriceProvider + Send + Sync + 'static> ZksNamespaceT for ZksNamespa
     }
 
     fn get_native_token_address(&self) -> BoxFuture<Result<Address>> {
-        todo!()
+        let self_ = self.clone();
+        Box::pin(async move {
+            self_
+                .get_native_token_address_impl()
+                .map_err(into_jsrpc_error)
+        })
     }
 
     fn get_miniblock_range(&self, batch: L1BatchNumber) -> BoxFuture<Result<Option<(U64, U64)>>> {
diff --git a/core/lib/zksync_core/src/api_server/web3/backend_jsonrpsee/namespaces/zks.rs b/core/lib/zksync_core/src/api_server/web3/backend_jsonrpsee/namespaces/zks.rs
index e93ea41bd26..5d2c165d1fa 100644
--- a/core/lib/zksync_core/src/api_server/web3/backend_jsonrpsee/namespaces/zks.rs
+++ b/core/lib/zksync_core/src/api_server/web3/backend_jsonrpsee/namespaces/zks.rs
@@ -39,7 +39,8 @@ impl<G: L1GasPriceProvider + Send + Sync + 'static> ZksNamespaceServer for ZksNa
     }
 
     async fn get_native_token_address(&self) -> RpcResult<Address> {
-        todo!()
+        self.get_native_token_address_impl()
+            .map_err(into_jsrpc_error)
     }
 
     async fn get_testnet_paymaster(&self) -> RpcResult<Option<Address>> {
diff --git a/core/lib/zksync_core/src/api_server/web3/namespaces/zks.rs b/core/lib/zksync_core/src/api_server/web3/namespaces/zks.rs
index b4d870a7d5a..875d177ce8c 100644
--- a/core/lib/zksync_core/src/api_server/web3/namespaces/zks.rs
+++ b/core/lib/zksync_core/src/api_server/web3/namespaces/zks.rs
@@ -1,4 +1,4 @@
-use std::{collections::HashMap, convert::TryInto};
+use std::{collections::HashMap, convert::TryInto, fs::File, io::BufReader, str::FromStr};
 
 use bigdecimal::{BigDecimal, Zero};
 use zksync_dal::StorageProcessor;
@@ -15,9 +15,9 @@ use zksync_types::{
     l2_to_l1_log::L2ToL1Log,
     tokens::ETHEREUM_ADDRESS,
     transaction_request::CallRequest,
-    AccountTreeId, L1BatchNumber, MiniblockNumber, StorageKey, Transaction, L1_MESSENGER_ADDRESS,
-    L2_ETH_TOKEN_ADDRESS, MAX_GAS_PER_PUBDATA_BYTE, REQUIRED_L1_TO_L2_GAS_PER_PUBDATA_BYTE, U256,
-    U64,
+    AccountTreeId, L1BatchNumber, MiniblockNumber, StorageKey, Transaction, H160,
+    L1_MESSENGER_ADDRESS, L2_ETH_TOKEN_ADDRESS, MAX_GAS_PER_PUBDATA_BYTE,
+    REQUIRED_L1_TO_L2_GAS_PER_PUBDATA_BYTE, U256, U64,
 };
 use zksync_utils::{address_to_h256, ratio_to_big_decimal_normalized};
 use zksync_web3_decl::{
@@ -126,8 +126,23 @@ impl<G: L1GasPriceProvider> ZksNamespace<G> {
     }
 
     #[tracing::instrument(skip_all)]
-    pub fn get_native_token_address_impl(&self) -> Address {
-        todo!()
+    pub fn get_native_token_address_impl(&self) -> Result<Address, Web3Error> {
+        const METHOD_NAME: &str = "get_native_token_address";
+        const NATIVE_ERC20_FILE_PATH: &str = "etc/tokens/native_erc20.json";
+
+        // read the address from the native_erc20.json file.
+        // in the future it should be read from .init.env file
+        let native_erc20_file =
+            File::open(NATIVE_ERC20_FILE_PATH).map_err(|err| internal_error(METHOD_NAME, err))?;
+        let native_erc20_json: serde_json::Value =
+            serde_json::from_reader(BufReader::new(native_erc20_file))
+                .map_err(|err| internal_error(METHOD_NAME, err))?;
+
+        let native_erc20_address = native_erc20_json["address"]
+            .as_str()
+            .ok_or_else(|| internal_error(METHOD_NAME, "address not found in json"))?;
+
+        H160::from_str(native_erc20_address).map_err(|err| internal_error(METHOD_NAME, err))
     }
 
     #[tracing::instrument(skip(self))]