Spanish Phrase
Te debo una.
Meaning
This phrase is a common way to express gratitude after someone has done a favor for you. It literally means 'I owe you one,' implying that you are willing to return the favor in the future. It conveys a sense of appreciation and informal commitment to reciprocal kindness.
When to use
Use this phrase in casual or semi-formal situations with friends, family, or colleagues. It is most appropriate after someone goes out of their way to help you with a task or a problem.
✦Grammar Breakdown
Tedebouna
Te (Object Pronoun)
This is the indirect object pronoun for 'you' (informal), showing who receives the 'debt'.
Debo (Verb)
The first-person singular form of the verb 'deber', which means 'to owe' or 'must'.
Una (Pronoun)
Though 'favor' is masculine, this idiomatic expression always uses the feminine 'una' to represent an unspoken favor or debt.
🗨In Conversation
Oye, ya terminé de arreglar tu computadora.
Hey, I finished fixing your computer.
¡Muchas gracias! En serio, te debo una.
Thank you so much! Seriously, I owe you one.
✕Common Mistakes
Te debo uno.
The phrase is a fixed idiom using the feminine 'una', likely referring to an implied 'deuda' (debt) or 'acción' (action).
Yo te deba una.
Use the present indicative 'debo' for a statement of fact; 'deba' is the subjunctive and is grammatically incorrect here.
↔Alternatives
Muchas gracias.
Thank you very much.
Te lo agradezco mucho.
I appreciate it a lot.
Estoy en deuda contigo.
I am in your debt.
Cultural Tip
In many Spanish-speaking cultures, the concept of 'hoy por ti, mañana por mí' (today for you, tomorrow for me) is very strong. Saying 'Te debo una' reinforces this social bond of mutual support and shows you value the relationship as much as the favor itself.

