diff --git a/pkg/neotest/basic.go b/pkg/neotest/basic.go
index 501254ae9..dc217f01e 100644
--- a/pkg/neotest/basic.go
+++ b/pkg/neotest/basic.go
@@ -109,15 +109,19 @@ func (e *Executor) SignTx(t *testing.T, tx *transaction.Transaction, sysFee int6
 	return tx
 }
 
-// NewAccount returns new signer holding 100.0 GAS. This method advances the chain
-// by one block with a transfer transaction.
-func (e *Executor) NewAccount(t *testing.T) Signer {
+// NewAccount returns new signer holding 100.0 GAS (or given amount is specified).
+// This method advances the chain by one block with a transfer transaction.
+func (e *Executor) NewAccount(t *testing.T, expectedGASBalance ...int64) Signer {
 	acc, err := wallet.NewAccount()
 	require.NoError(t, err)
 
-	tx := e.NewTx(t, []Signer{e.Committee},
+	amount := int64(100_0000_0000)
+	if len(expectedGASBalance) != 0 {
+		amount = expectedGASBalance[0]
+	}
+	tx := e.NewTx(t, []Signer{e.Validator},
 		e.NativeHash(t, nativenames.Gas), "transfer",
-		e.Committee.ScriptHash(), acc.Contract.ScriptHash(), int64(100_0000_0000), nil)
+		e.Validator.ScriptHash(), acc.Contract.ScriptHash(), amount, nil)
 	e.AddNewBlock(t, tx)
 	e.CheckHalt(t, tx.Hash())
 	return NewSingleSigner(acc)
@@ -233,11 +237,11 @@ func (e *Executor) NewDeployTx(t *testing.T, bc blockchainer.Blockchainer, c *Co
 	tx.Nonce = Nonce()
 	tx.ValidUntilBlock = bc.BlockHeight() + 1
 	tx.Signers = []transaction.Signer{{
-		Account: e.Committee.ScriptHash(),
+		Account: e.Validator.ScriptHash(),
 		Scopes:  transaction.Global,
 	}}
-	addNetworkFee(bc, tx, e.Committee)
-	require.NoError(t, e.Committee.SignTx(netmode.UnitTestNet, tx))
+	addNetworkFee(bc, tx, e.Validator)
+	require.NoError(t, e.Validator.SignTx(netmode.UnitTestNet, tx))
 	return tx
 }
 
diff --git a/pkg/neotest/client.go b/pkg/neotest/client.go
index 89ac48cf7..330cf8a3e 100644
--- a/pkg/neotest/client.go
+++ b/pkg/neotest/client.go
@@ -19,7 +19,7 @@ type ContractInvoker struct {
 	Signers []Signer
 }
 
-// CommitteeInvoker creates new ContractInvoker for contract with hash h.
+// CommitteeInvoker creates new ContractInvoker for contract with hash h and committee multisignature signer.
 func (e *Executor) CommitteeInvoker(h util.Uint160) *ContractInvoker {
 	return &ContractInvoker{
 		Executor: e,
@@ -28,6 +28,15 @@ func (e *Executor) CommitteeInvoker(h util.Uint160) *ContractInvoker {
 	}
 }
 
+// ValidatorInvoker creates new ContractInvoker for contract with hash h and validators multisignature signer.
+func (e *Executor) ValidatorInvoker(h util.Uint160) *ContractInvoker {
+	return &ContractInvoker{
+		Executor: e,
+		Hash:     h,
+		Signers:  []Signer{e.Validator},
+	}
+}
+
 // TestInvoke creates test VM and invokes method with args.
 func (c *ContractInvoker) TestInvoke(t *testing.T, method string, args ...interface{}) (*vm.Stack, error) {
 	tx := c.PrepareInvokeNoSign(t, method, args...)