To be specific, we are an unmarried couple, 2 kids. We're jointly named on deeds, joint mortgage of roughly 105k, house purchase was approx 210k.
I put in most of the money, so could revenue actually pursue me for gift tax even though it's our own house?
Forget about tax for the moment. What have you agreed in your partnership agreement when you bought the house?
This is how I would look at this situation
You own 70% of the house, there is no gift to Green and so no CAT for her.
An alternative way of looking at it, if you want 50/50 ownership,would be:
So Green should be paying 86% of the mortgage payments. (95/110)
In practice, most people don't think about this until they split up and he wants half the house although he put very little in and she is paying most of the mortgage. Or it's in deep negative equity, and he wants what he put into the house back.
In theory, you put in 90% of the money and pay 90% of the mortgage, and say "Dear you own half the house" , I suppose Revenue could argue that you have given her a gift of 40% of the value of the house or €80k.
As I assume you have no agreement in place to do such a thing, then Revenue could not argue the point.
In any event, Revenue has no interest in such deals.
Brendan