Yes. The Quran commands giving women their dowries as a gift (4:4). It belongs to the wife, and there is no fixed amount. It can be small or large by agreement, and the best is what is easy and sincere.
Dad a vuestras mujeres su dote gratuitamente. Pero, si renuncian gustosas a una parte en vuestro favor, haced uso de ésta tranquilamente.
This is general information, not a fatwa. For your own situation, ask a qualified scholar.
Questions about halal and haram
Is the mahr (dowry) required in marriage?
Yes. The Quran commands giving women their dowries as a gift (4:4). It belongs to the wife, and there is no fixed amount. It can be small or large by agreement, and the best is what is easy and sincere.