Formal:
* Maligayang pagdating sa aming pamilya. (This is the most literal and formal translation)
* Masayang tanggapin ka sa aming pamilya. (This conveys a sense of joy and warmth)
Informal:
* Welcome sa pamilya natin! (This is a more casual and friendly way to say it)
* Pasok ka sa pamilya natin! (This literally means "Come in to our family" and implies a sense of belonging)
More personal:
* Masaya kaming magkaroon ka sa aming pamilya. (This emphasizes the family's happiness in having you)
* Sana makaramdam ka ng pagmamahal at pagtanggap sa pamilya namin. (This expresses a wish for you to feel loved and accepted)
You can choose the best translation based on the situation and your relationship with the person you are welcoming.