diff --git a/freqtrade/data/common.py b/freqtrade/data/common.py
new file mode 100644
index 000000000..7a61d51ea
--- /dev/null
+++ b/freqtrade/data/common.py
@@ -0,0 +1,7 @@
+"""
+Common datatypes
+"""
+from typing import List, Tuple
+
+# List of pairs with their timeframes
+ListPairsWithTimeframes = List[Tuple[str, str]]