diff --git a/pkg/core/netmap/state.go b/pkg/core/netmap/state.go
new file mode 100644
index 000000000..8947416e9
--- /dev/null
+++ b/pkg/core/netmap/state.go
@@ -0,0 +1,7 @@
+package netmap
+
+// State groups current system state parameters.
+type State interface {
+	// CurrentEpoch returns number of current NeoFS epoch.
+	CurrentEpoch() uint64
+}