diff --git a/pkg/innerring/processors/balance/handlers_test.go b/pkg/innerring/processors/balance/handlers_test.go
new file mode 100644
index 00000000..3470fba2
--- /dev/null
+++ b/pkg/innerring/processors/balance/handlers_test.go
@@ -0,0 +1,90 @@
+package balance
+
+import (
+	"testing"
+	"time"
+
+	frostfscontract "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/morph/client/frostfs"
+	balanceEvent "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/morph/event/balance"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/util/logger/test"
+	"github.com/nspcc-dev/neo-go/pkg/util"
+	"github.com/stretchr/testify/require"
+)
+
+func TestProcessorCallsFrostFSContractForLockEvent(t *testing.T) {
+	t.Parallel()
+	as := &testAlphabetState{
+		isAlphabet: true,
+	}
+	conv := &testPresicionConverter{}
+	cl := &testFrostFSContractClient{}
+	bsc := util.Uint160{100}
+
+	processor, err := New(&Params{
+		Log:           test.NewLogger(t, true),
+		PoolSize:      2,
+		FrostFSClient: cl,
+		BalanceSC:     bsc,
+		AlphabetState: as,
+		Converter:     conv,
+	})
+	require.NoError(t, err, "failed to create processor")
+
+	processor.handleLock(balanceEvent.Lock{})
+
+	for processor.pool.Running() > 0 {
+		time.Sleep(10 * time.Millisecond)
+	}
+
+	require.Equal(t, 1, cl.chequeCalls, "invalid Cheque calls")
+}
+
+func TestProcessorDoesntCallFrostFSContractIfNotAlphabet(t *testing.T) {
+	t.Parallel()
+	as := &testAlphabetState{}
+	conv := &testPresicionConverter{}
+	cl := &testFrostFSContractClient{}
+	bsc := util.Uint160{100}
+
+	processor, err := New(&Params{
+		Log:           test.NewLogger(t, true),
+		PoolSize:      2,
+		FrostFSClient: cl,
+		BalanceSC:     bsc,
+		AlphabetState: as,
+		Converter:     conv,
+	})
+	require.NoError(t, err, "failed to create processor")
+
+	processor.handleLock(balanceEvent.Lock{})
+
+	for processor.pool.Running() > 0 {
+		time.Sleep(10 * time.Millisecond)
+	}
+
+	require.Equal(t, 0, cl.chequeCalls, "invalid Cheque calls")
+}
+
+type testAlphabetState struct {
+	isAlphabet bool
+}
+
+func (s *testAlphabetState) IsAlphabet() bool {
+	return s.isAlphabet
+}
+
+type testPresicionConverter struct {
+}
+
+func (c *testPresicionConverter) ToFixed8(v int64) int64 {
+	return v
+}
+
+type testFrostFSContractClient struct {
+	chequeCalls int
+}
+
+func (c *testFrostFSContractClient) Cheque(p frostfscontract.ChequePrm) error {
+	c.chequeCalls++
+	return nil
+}
diff --git a/pkg/innerring/processors/balance/processor.go b/pkg/innerring/processors/balance/processor.go
index 7ae639e8..356754cf 100644
--- a/pkg/innerring/processors/balance/processor.go
+++ b/pkg/innerring/processors/balance/processor.go
@@ -25,11 +25,15 @@ type (
 		ToFixed8(int64) int64
 	}
 
+	FrostFSClient interface {
+		Cheque(p frostfscontract.ChequePrm) error
+	}
+
 	// Processor of events produced by balance contract in the morphchain.
 	Processor struct {
 		log           *logger.Logger
 		pool          *ants.Pool
-		frostfsClient *frostfscontract.Client
+		frostfsClient FrostFSClient
 		balanceSC     util.Uint160
 		alphabetState AlphabetState
 		converter     PrecisionConverter
@@ -39,7 +43,7 @@ type (
 	Params struct {
 		Log           *logger.Logger
 		PoolSize      int
-		FrostFSClient *frostfscontract.Client
+		FrostFSClient FrostFSClient
 		BalanceSC     util.Uint160
 		AlphabetState AlphabetState
 		Converter     PrecisionConverter