So I am planning on moving in with my girlfriend. We both own our apartments, and it makes the economic picture somewhat more complicated.

Her monthly living expenses is 6861 for her flat. My monthly living expenses is 7892 for my flat.

We plan on moving to her flat and renting out my flat. We want to split the money 50/50 and not the Suze Orman way.

I reckon we can get around 10k-12k for my flat.

What do we each pay per month? It would be nice to have an explanation of how you arrived at your answer and not just the final solution.

  • 1
    I'm assuming this is in kroner?
    – CQM
    Commented May 19, 2015 at 18:11
  • This is Norwegian kroner yes but the currency won't inpact the answer from my understanding.
    – Anders
    Commented May 19, 2015 at 18:55
  • right, I was just curious about the relative prices on those homes.
    – CQM
    Commented May 19, 2015 at 19:21
  • 5
    What is "the Suze Orman way"?
    – Ben Miller
    Commented May 19, 2015 at 19:38
  • @BenMiller I saw it referenced that way somewhere on the internett and I'm not sure if that is the correct term. Either way the meaning is that you dont split the bill 50/50 but split the bill according to your income. So if she makes 60k a year and I make 40k the split is 60/40.
    – Anders
    Commented May 19, 2015 at 20:40

3 Answers 3


Do you want to split expenses of the new apartment, or split your income/assets equally too (as for instance with a marriage where no sort of "yours, mine, and ours" are split out)?

I'm going to assume you have beliefs similar to me in my answer, in that you desire to split expenses of the new place but don't suddenly want to split all of your assets and income 50/50 too. So here's how I'd approach this.

I am somewhat unsure of what you mean by "living expenses" for your flat. Does this mean the cost of ownership per month - what it takes to not get rid of the place - and no portion of this is interest/mortgage?

To make the calculations a little simpler, I'll assume that all the money you pay out as expenses is just gone - none of it remains as equity or is dis-proportionally accumulating value in some other such way.

So, you move in with your girlfriend. The cost for her place - the place itself, taxes, utilities, whatever - is 7892 per month. So since you are both getting equal use of the place, you would split this into 3946 per month for each of you.

That's it.

What about your place?

Well, I don't see how that really matters at all, anymore than if you owned a company or stocks and bonds. If you rent it out for less per month than it costs you, I don't see why your girlfriend should take any part of the loss. Conversely if you make more money per month than it costs you, that is your investment profit - the payment you get for owning the apartment and dealing with renting it out.

Now if your girlfriend is going to partner with you in handling renting out the apartment you own and you want to look at this as an investment partnership, then you should pay all expenses out of the income first and then you can split the profit if you really want.

One question to ask would be, what if you just sold your apartment completely? Would you give your girlfriend have the money from the sale? If not then I don't see why you would split the investment profit from holding on to the place.

While this is what I recommend and would feel comfortable with personally and if the situation was reversed (and it was my girlfriend that owned a place and was moving in with me), ultimately this is about your personal values, beliefs, and relationship. You are very wise to seek something that both of you will find fair, and so you should discuss a proposed arrangement with your girlfriend and see if you are on the same page.

If you are both fine with the agreement and feel OK with it, then great - none of us have to like or agree with it, because we aren't a part of your relationship. Psychologically and financially this situation seems the most reasonable to me, but YMMV.

By The Numbers

After some more thought and from comments, I realize that it's probably best to explore a few possibilities numerically. So I'll run a few sets of numbers which may help pick which one is right for your relationship.

  1. Share Her Place's Expenses, Your Investment Is Yours

This is approximately the same as paying her "rent" for getting to live with her. You pay her for sharing her place, splitting the expense: 3946 paid to you. She pays the other 3946 for her place. Financially it's like being room-mates. You can do whatever you want with your place - rent or sell, hold on to it for security, etc.

This deal makes your girlfriend financially better off by 3946. The financial advantage to you is wholly dependent on what you do with your place.

This option would give you each the most financial independence, which is why I like it - but you might be keen on being more interdependent.

Which leads us to the next option.

  1. Share Her Place's Expenses, Rent Your Apartment, Share Profits

Here you behave as before in splitting her expenses, but you include renting out your place as part of the deal. Let's say you get 10k a month for it. You pay the expenses on that place from the rent, then you have 2108 left as 'profit'. You split the profits monthly 1054 to each of you.

There's a bit of problem here, though - what happens when the place is vacant? Do you share the full expense of the rent, so she'd actually be paying you each month while it sits open? What about repairs, taxes (costs and credits), etc?

I would recommend instead what you do, if you go this way, to account for the apartment as an investment and don't pay out ANY of the profits right away. All rents stay in their own account, and you pay expenses from that same account. For you both it's like it doesn't exist, accept it is a nice earning asset. When you decide it has accumulated more than enough to pay for itself and has enough money to cover vacancy, repairs, etc, then when you pull out money for the duration you are together you just pay it out to both of you equally. You might also pull this "equity" out and spend it on something for both of you, like a nice vacation, etc - something you both enjoy, so you are still sharing the profits.

I don't object to this, and it could be a nice arrangement. I would only note that this makes you have a personal relationship, you live together as roommates, and now you are co-landlords/business partners. That's a lot of types of relationships, and I can tell you from personal experience each type has it's own stresses - and this sort of stress can stack (or if you don't handle it well, multiply). So just make sure you are both clear what sort of responsibility you are really both signing up for up front, and what you'd do if you part.

  1. Pool all apartment expenses and income (50/50 partnership)

Combine your apartment expenses, which would equal 14753, so that's 7376 cost to each of you a month. If you rent your place then whatever money you get you split, and whatever costs come up (repairs, cleaning, etc) you would also split. So if you get an average of 10000 a month for the apartment you each are paying living expenses of 2376 total.

But notice that this isn't exactly equal, either. You will pay 5516 less per month than you are now, and she will pay 4485 less than she was before.

There's nothing morally wrong with this or anything - it's a 100% partnership across the board. Yet advantage is still not equal - you actually will see a larger benefit to your budget than she will. But if you seek equal benefit, you will have to pay 515 a month more than she does.

This sort of thing is basically the model marriage uses, a pure 50/50 partnership, or "communal property". And note that one of you will either be paying more than the other, will be benefiting more than the other - no matter what you do! It's impossible to balance both costs and benefits, because your income and expenses are not the same going in.

If you go this way you'll need to choose what is most important - splitting the expenses/income equally, or benefiting financially equally.

So I say again, ultimately you have to choose based upon your individual and shared values, and also on just what sort of relationship and layers of commitment you want to have together. You could start slow with option 1, then progress to sharing more - that's what I'd recommend, because I like the idea of developing things one layer at a time rather than jumping in head-first (like I have personally done in the past, haha!). Once bitten twice shy, I might just be more risk-averse or careful than you desire to be, but that's a personal choice.

I personally believe the relationship can be far more valuable than any investment, but at the same time I'll take $1 over a relationship that has turned sour any day of the week. This is why I suggest the more gradual, careful approach - to let your love bloom and grow deeper one layer at a time, without the complexities of fully shared finances or investment partnership. Relationships are hard enough, so this is why I favor trying to protect them aggressively from unnecessary complexity. Some favor the "sink or swim" model of seeking out trials and challenges, while I favor the "relationship as tender, growing sapling" model.

I hope seeing these options laid out more is helpful to you, and good luck to you, your relationship, and - lastly - to your investments!

  • Thanks for a really great answer. "living expenses" in living expenses we have included power, utilities, tv, internett, house insurance and only the interest of the mortgage and not the down payments. We did not include any taxation. So the problem with my place is in theory we could move to my place or her place. So we are thinking nobody should really make more money by us moving together. So we are a little unsure how the rent should be used. I like your last part of your answer and ultimately that is where the answer lies but I/we need to get a better understanding before we get there.
    – Anders
    Commented May 19, 2015 at 20:24
  • From what I understand there is at least 3 options. 1. Like you suggest I keep my place separate and the loss/win of the rent of my place is only up to me. 2. We cover all the expenses from my place and split the profit. 3. This is the option I think she is suggesting but I dont understand it yet. She gets half the income from the rent of my place and I pay half her expenses. Maybe option 2 and 3 are the same but I will have to try and calculate.
    – Anders
    Commented May 19, 2015 at 20:28
  • 3
    @Anders Hm, that #3 does sound a bit odd - would depend on if income was net profit or gross income. If it was gross income from rent that'd be unacceptable - you'd be losing a bundle (paying nearly 2000 for your place and nearly 4000 for her's, while she'd be up...11k?). I'm guessing that's not what she means, or she hasn't considered the numbers properly.
    – BrianH
    Commented May 19, 2015 at 20:50
  • I disagree with your advice to not split the rental income 50/50. If they instead lived in his place, she would get all the rental income. The fairest decision is to split rental income/expenses 50/50. This is fair to both individuals regardless of which apartment were to be rented out. Commented May 20, 2015 at 13:21
  • @Anders After thinking on this more I reworked my answer to include more options and a comparison, as well as accompanying reasoning. I hope this is even more helpful to you!
    – BrianH
    Commented May 20, 2015 at 16:13

Split the money 50/50. Split the costs 50/50. Prioritize your relationship over a couple of dollars here and there.

  • 1
    It is important for both that the solution is fair.
    – Anders
    Commented May 19, 2015 at 19:01
  • I actually really like this answer, I currently "rent" a room to my girlfriend in my apartment and we keep it like that to help keep everything in a framework of mutual understanding, and if the split ends up being $400 my way and 384.34 her way (she "gets" less of the apartment and makes less than me) then I will usually just round to $375 for the month because it helps her out and brownie points, and in the end it is only ~$9 which isn't that significant compared to a 4 year relationship
    – Pseudonym
    Commented May 19, 2015 at 19:54
  • +1, if you are moving in together you obviously see the potential for a long term relationship. There will be times in your lives that one of you is making more money than the other, and that balance may change quite a few times. As long as one of you isn't totally mooching off the other, a 50/50 split, while not technically the most fair distribution, is the best.
    – Dan C
    Commented May 19, 2015 at 21:57
  • 1
    @Anders what is the definition of fair? My wife and I consider it fair that we both have exactly the same amount of 'pocket money', after we have pooled all our money, and paid all the expenses from the joint account.
    – jwg
    Commented May 20, 2015 at 7:04

Expenses: IMO, The best way to deal with this situation is by treating you staying at her house as flatting/renting a room as @Pseudonym stated he does with his partner in the comments of another answer.

This means you pay X amount of dollars a week to her as rent which she can most likely choose to put it towards house insurance, interest, repayments, repairs and improvements etc etc. From there you split your "living" expenses 50/50. Living expenses include stuff like telephone, internet, utility bills, food, contents insurance etc.

Renting Income: Then the earnings/losses you make from renting your apartment out are yours alone. After all if your place gets trashed by a tenant with a meth lab, she won't and shouldn't have to pay the ridiculous amounts of money required to get it fixed up.

Determining the rent to pay:

Not Ideal, but an easy method: Use your place's renting value as a indicator/market research example to determine how much rent you would pay to her (however since you are only a half resident at her place you would only pay half).

Ideal: Your place would have a different renting value to hers, so do some research together and find a median renting value of her house based on similar houses or ask her how much she wants you to pay in rent since after all the owner of the house has final say on the renting value. You "might" want to consider that you staying with her is a more secure tenancy as she knows you won't wreak her place, but the same cannot be said for the tenant you have in your place. (Post in the comments if you think this last sentence should be removed, I'm on the fence about it but it seems relevant.)

Disclaimer: Remember you are considering a long-term relationship with her don't get too picky and don't let it get personal/emotional when deciding the renting amounts.

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