I'm deeply indebted to you.

Meaning

I owe you a great deal of gratitude.

Examples

• John: 'Thanks for helping me with the presentation, Alice.'<br>
• Alice: '<b>I'm deeply indebted to you</b>. It wouldn't have been nearly as good without your input.'
• John: '<b>I'm deeply indebted to you</b> for your trust and belief in me.'
• Alice: 'John, you saved the day!'<br>