How to Say "will permit" in Spanish
The Spanish word for “will permit” is “permitirá” — A2 level. This is a very common word in everyday Spanish.

Examples
Este nuevo sistema permitirá ahorrar mucha energía.
This new system will make it possible to save a lot of energy.
El profesor no permitirá el uso de teléfonos en el examen.
The teacher will not allow the use of phones during the exam.
Tu esfuerzo te permitirá alcanzar tus metas.
Your effort will enable you to reach your goals.
Who is acting?
This specific form 'permitirá' is only used when the subject is 'he', 'she', 'it', or 'you' (formal/usted). It always points to a future action.
The power of the accent
The accent on the last 'á' is vital. Without it, the word changes its meaning and rhythm entirely.
Mistaking 'permitirá' for 'permitiera'
Mistake: “Using 'permitirá' in 'if' sentences like 'Si él me permitirá...'”
Correction: Use 'permitiera' after 'si' (if) when talking about hypothetical situations. 'Permitirá' is for things that definitely will happen.
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