diff --git a/rescan.go b/rescan.go
index 185c5f96..ebf32f07 100644
--- a/rescan.go
+++ b/rescan.go
@@ -74,6 +74,10 @@ type ChainSource interface {
 	//
 	// TODO(wilmer): extend with best hash as well.
 	Subscribe(bestHeight uint32) (*blockntfns.Subscription, error)
+
+	// IsCurrent returns true if the backend chain thinks that its view of
+	// the network is current.
+	IsCurrent() bool
 }
 
 // ScanProgressHandler is used in rescanOptions to update the caller with the
diff --git a/rescan_test.go b/rescan_test.go
index e611eb90..8720c33c 100644
--- a/rescan_test.go
+++ b/rescan_test.go
@@ -272,6 +272,12 @@ func (c *mockChainSource) setFailGetFilter(b bool) {
 	c.failGetFilter = b
 }
 
+// IsCurrent returns true if the backend chain thinks that its view of
+// the network is current.
+func (c *mockChainSource) IsCurrent() bool {
+	return true
+}
+
 // GetCFilter returns the filter of the given type for the block with the given
 // hash.
 func (c *mockChainSource) GetCFilter(hash chainhash.Hash,