Implement amend_last_stake_amount

freqtrade/constants.py

@@ -79,6 +79,7 @@ CONF_SCHEMA = {
             'maximum': 1,
             'default': 0.99
         },
+        'amend_last_stake_amount': {'type': 'boolean', 'default': False},
         'fiat_display_currency': {'type': 'string', 'enum': SUPPORTED_FIAT},
         'dry_run': {'type': 'boolean'},
         'dry_run_wallet': {'type': 'number', 'default': DRY_RUN_WALLET},
@@ -282,6 +283,7 @@ SCHEMA_TRADE_REQUIRED = [
     'max_open_trades',
     'stake_currency',
     'stake_amount',
+    'tradable_balance_ratio',
     'dry_run',
     'dry_run_wallet',
     'bid_strategy',

freqtrade/freqtradebot.py

@@ -308,6 +308,9 @@ class FreqtradeBot:
         """
         available_amount = self._get_available_stake_amount()
 
+        if self.config['amend_last_stake_amount']:
+            stake_amount = min(stake_amount, available_amount)
+
         if available_amount < stake_amount:
             raise DependencyException(
                 f"Available balance ({available_amount} {self.config['stake_currency']}) is "