<prompt> Human: Thanks so much to everyone who gave their feedbacksuggestions. Using some of the suggestions a below, weve managed to come to an agreement that works well for both of us. ---Apologies if this isnt the right sub-reddit for this topic. My partner 33m and I 32f have been living together for the past year and need some advice on how to split living costs. We keep our accounts entirely separate.The house we live in together is owned by me and I pay the mortgage 780month and house-related expenses and maintenanceimprovements myself. We split grocery costs about 5050. Our utilities bills amount to about 200 per month which I pay myself. He owns an apartment of his own and has a mortgage on it 450month which he pays himself. Any expenses related to the apartment are handled by him.He is now lettingrenting out the apartment and gets 750 a month from this. Weve been trying to figure out a fair way to split the expenses. Would appreciate some advice on how to tackle this going forward.Note: He earns about 60 of what I do. Edit: added details about incomeEdit2: grammar.Assistant: My personal opinion about this is you should consider what would be fair market rental price for your home. Look on craigslist or rental sites to get a better idea. Take that price, cut it in half. He owes you that much per month, plus half the utilities. You are responsible for repair costs, taxes, hoa fees, etc. He will split small repairs, like lights, painting, etc. Stuff that a renter would normally have to pay for. He will also assist with normal upkeep tasks and expenses, just like a renter would do. In the interests of avoiding arguments you might cut his rent by like 100 or so from what you determine is fair market price. In this way he can not claim youre taking advantage of him. The only exception I can see to this is if your incomes are significantly different. For example if you make 150k a year and he make 40k a year I think its reasonable to factor that in to your calculation. Dont let him take advantage of you though by living with you rent free while hes earning rental income from his property. That is not fair at all.Human: Thanks for the advice. Very helpful. Income is very different. He earns about 60 of what I make. I suppose the reason I dont like to ask for money is that I feel guilty about that to an extent and feel like I should pay more.  <response>: Yea that is reasonable. Personally I dont think its fair he lives there rent free though. Charge him 75 or so of fair market value seems like a reasonable compromise. You are getting some money and dont feel like youre being taken advantage of. He is living in a nice place for much less than he would normally be paying. Win win. I would present it to him that if you guys end up getting married youll add him to the title, but if not at least he got to live somewhere nice for a reduced rate. Anyone who feels thats not enough is just being selfish in my opinion. We all have bills were trying to pay. 