diff --git a/freqtrade/leverage/interest.py b/freqtrade/leverage/interest.py
index aacbb3532..2878ad784 100644
--- a/freqtrade/leverage/interest.py
+++ b/freqtrade/leverage/interest.py
@@ -20,7 +20,7 @@ def interest(
 
         :param exchange_name: The exchanged being trading on
         :param borrowed: The amount of currency being borrowed
-        :param rate: The rate of interest
+        :param rate: The rate of interest (i.e daily interest rate)
         :param hours: The time in hours that the currency has been borrowed for
 
         Raises:
@@ -36,7 +36,8 @@ def interest(
         # Rounded based on https://kraken-fees-calculator.github.io/
         return borrowed * rate * (one+ceil(hours/four))
     elif exchange_name == "ftx":
-        # TODO-lev: Add FTX interest formula
-        raise OperationalException(f"Leverage not available on {exchange_name} with freqtrade")
+        # As Explained under #Interest rates section in
+        # https://help.ftx.com/hc/en-us/articles/360053007671-Spot-Margin-Trading-Explainer
+        return borrowed * rate * ceil(hours)/twenty_four
     else:
         raise OperationalException(f"Leverage not available on {exchange_name} with freqtrade")
diff --git a/tests/leverage/test_leverage.py b/tests/leverage/test_interest.py
similarity index 83%
rename from tests/leverage/test_leverage.py
rename to tests/leverage/test_interest.py
index 7b7ca0f9b..c7e787bdb 100644
--- a/tests/leverage/test_leverage.py
+++ b/tests/leverage/test_interest.py
@@ -22,9 +22,10 @@ twentyfive_hours = Decimal(25.0)
     ('kraken', 0.00025, five_hours, 0.045),
     ('kraken', 0.00025, twentyfive_hours, 0.12),
     # FTX
-    # TODO-lev: - implement FTX tests
-    # ('ftx', Decimal(0.0005), ten_mins, 0.06),
-    # ('ftx', Decimal(0.0005), five_hours, 0.045),
+    ('ftx', 0.0005, ten_mins, 0.00125),
+    ('ftx', 0.00025, ten_mins, 0.000625),
+    ('ftx', 0.00025, five_hours, 0.003125),
+    ('ftx', 0.00025, twentyfive_hours, 0.015625),
 ])
 def test_interest(exchange, interest_rate, hours, expected):
     borrowed = Decimal(60.0)