How to Split Rent Fairly: Unequal Rooms, Deposits, and Proration

Equal splitting isn't wrong—it's just the right tool for specific situations. If you and a partner are splitting a one-bedroom, or if three friends move into a place where all bedrooms are genuinely comparable in size and amenity, equal works fine. Two roommates sharing a $1,850/month apartment each pay $925. Simple, hard to argue with.

In Make It Even, you'd create a 'Rent – June' expense for $1,850 and choose an equal split. Both members see their share immediately, and the running balance updates. No back-and-forth texts necessary.

When rooms differ, percentage splitting is the cleanest approach. The common method is to calculate each room's share of the total livable square footage, then adjust slightly for amenities like a private bath or a better view.

Back to the Chicago example: the master bedroom is 220 sq ft with a private bath, the shared bedroom is 160 sq ft. Total private space: 380 sq ft. Room 1's raw share is 220/380 = 57.9%. Room 2 splits 160/380 = 42.1% between two people, so each pays 21%. But the master also has an en-suite bath—worth maybe a 5-point premium by convention. You might settle on 60% for Room 1 and 40% split between Rooms 2A and 2B: 20% each.

On $2,400 rent, that's $1,440 for the master, and $480 each for the two people in the smaller room. Both smaller-room occupants save $320 per month compared to an equal split. In Make It Even, set the expense to 'Percentage' split, type 60, 20, 20, and you're done. The app enforces that percentages sum to 100 before saving.

There's no universally correct formula for the premium—what matters is that the three of you agree before move-in, not after month two when someone starts feeling resentful.

Sometimes percentages feel too precise for a conversation that's already a bit awkward. Shares splitting lets you assign relative weights without doing the division yourself. If Room 1 is worth 3 shares and each of the two smaller-room occupants gets 2 shares each, that's 3 + 2 + 2 = 7 total shares. On $2,400 rent: 3/7 = $1,028.57 for Room 1, $685.71 each for the others.

The 'shares' framing tends to make negotiations feel less like a math exam. You're just agreeing that the master suite is worth 1.5x a standard room—which is a more intuitive number to debate than '57.89%.'

The deposit creates an accounting headache that rent itself doesn't: it's not an expense you're splitting equally by default, and it has to come back out at the end. If the landlord requires one month's deposit—$2,400 in our example—and each person's deposit share matches their rent share, then the master gets charged $1,440 at move-in and the others $480 each.

Log this in Make It Even as a separate 'Security Deposit – Move-in' expense with the same percentage split as rent. At move-out, when the landlord returns some or all of it, log a settlement or a negative expense to distribute those funds back proportionally. Keeping it as its own line item means you have a paper trail if there's ever a dispute about who's owed what from the return.

If someone pays the full deposit upfront to the landlord and gets reimbursed by the others, that's an even simpler flow: one person records paying $2,400, and Make It Even shows the other two owe their proportional shares immediately.

Someone moving in on the 11th of a 30-day month owes 20/30 of their normal share. If their full monthly share would be $800, the prorated amount is $533.33. Log a one-time expense called 'Rent – July (prorated)' for $533.33 assigned entirely to that person, then go back to normal splits for August.

The same logic applies at move-out. If someone leaves on the 20th, their final month's contribution is 20/30 of their standard share. The remaining roommates split the remainder for the rest of the month according to whatever adjustment makes sense—usually they each absorb an equal share of the gap until a new roommate is found.

These one-off calculations are genuinely worth recording in a shared ledger rather than just handling informally. Move-out is exactly when people forget what was agreed verbally two months earlier.

Once you've agreed on the split structure, rent is the same expense every month. Make It Even lets you mark an expense as recurring—monthly, on a specified day—so it appears in the group ledger automatically without anyone having to remember to log it. Set up 'Rent – [Month]' once with the correct split type and amounts, mark it recurring on the 1st, and it propagates forward.

Combine this with a group monthly budget. If your household's total rent is $2,400 and shared utilities average another $180, set a household budget of $2,580/month. The budget tracker shows you where you are mid-month and whether there's room for that shared streaming service or cleaning supply run.