I owe you a debt of gratitude.

Meaning

Expressing a significant obligation of thanks.

Examples

• John: 'Thanks for going the extra mile to help me.'<br>
• Alice: '<b>I owe you a debt of gratitude</b> for your extraordinary effort.'
• John: '<b>I owe you a debt of gratitude</b>; it's something I won't forget.'
• Alice: 'Your support during my crisis has been crucial.'<br>