Tenants in common percentage split agreement

[Patrick Thomas Dickinson]

Hi bigger pockets folks, 

Closing on a house April 19th, 2022. Me and my girlfriend are trying to come up with a fair percentage split while holding title as tenants in common. Here are the financials. Let me know what you think it should be and your reasoning. Thanks 

Purchase price 925,000 k 

down payment + closing costs +10000$ cash = 85000$ ( I am paying all of this, so I have 85000 into the deal) 

Lending:  We are splitting the loan 50/50 which = 878,750 so 439,375 each 

We plan on paying the mortage 50/50 as well as all house expenses would be 50/50 

Based on this information what do you believe is a fair tenants in common percentage split/ agreement 

Thanks