When a roommate moves out, the last shared payment is rarely the last bill. Electricity may be billed after the keys change hands. A shared subscription might renew on the old card. Someone may have bought supplies for the apartment and forgotten to request their share.

A roommate move-out budget is a closing process for these loose ends. It is different from choosing an everyday rent split: you need to identify what is already paid, what is still pending, and who will handle bills after the household changes. Keep any lease or deposit questions separate from the arithmetic; your agreement and local rules determine the obligations, not a budgeting checklist.

Set a cutoff date and take a snapshot

Agree on a practical date for the shared-expense review, such as the date the person leaves or the last day of their agreed occupancy. Record who is staying, who is leaving, and who currently pays each recurring bill. The payment date and the period covered are not always the same: a utility bill paid next month may include days before and after the move.

Collect the recent utility statements, rent and household payment records, outstanding reimbursement requests, and a list of shared subscriptions or services. Keep account passwords and full payment details in private records, not in a shared budget note. A simple list of bill names, coverage dates, amounts, payer, and status is enough to start.

Separate settled costs from bills still coming

Make three buckets rather than guessing one final balance:

  • Settled: everyone has paid their agreed share; no further transfer is needed.
  • Known but unpaid: an invoice or receipt exists, but the person who paid has not been reimbursed.
  • Pending: the service period has started or an adjustment is expected, but the final statement has not arrived.

Do not settle a pending item using a guess and then forget it. If the group wants an estimate now, label it as provisional, record the assumptions, and agree on a later true-up date. Likewise, a security deposit that may eventually be returned is not money available to cover this month’s bills. Track any deposit contributions and eventual refund in a separate line rather than netting an imagined refund against utilities.

Split each bill by the period it covers

For every final utility or shared service, check the actual service dates. A bill that covers both the old and new roommate arrangements may need two portions. If the household already agreed to a different method, use that method; otherwise discuss a straightforward split before anyone transfers money.

For example, imagine a 120-unit internet bill for a 30-day period. If two people shared the first 20 days and only one person used the remaining 10 days, the first portion is 80 units and the second is 40. An equal split of the first portion would be 40 units each; the remaining 40 belongs in the continuing household budget. This is an illustrative arithmetic example, not a rule for how any provider or tenancy allocates charges. Some services charge a fixed month regardless of usage, and the agreement may assign responsibility differently.

The important step is to show the dates and method beside the number. That makes a correction possible when a late bill arrives.

Reconcile shared purchases and transfers once

Look beyond formal bills. Check cleaning supplies, shared groceries, small repairs, household items, and subscriptions that one person paid for. Decide whether an item was actually shared or personal; a receipt alone does not make it a group cost. If an item stays with one roommate, agree whether it is being bought from the group or simply belongs to its original owner.

Record each item with the amount, payer, participants, agreed split, and repayments already made. Then calculate amount owed minus amount already repaid for each person. Avoid counting a card payment as a second expense after the original shared purchase has already been recorded. If two roommates owe each other, a single net transfer can simplify settlement, but retain the itemized record so both can see what the net amount represents.

Hand recurring accounts to the right person

A clean closing balance will not help if an old payment method keeps getting charged. List each recurring account and decide who will own it after the move. Check the next renewal date, the billing contact, the payment method, and whether the service should stay, transfer, or end. Confirm changes with the provider where necessary; removing someone’s name from a private spreadsheet does not change a provider account.

Budget for overlap. A final bill, a new connection charge, or a period with fewer people splitting fixed costs may make the next month more expensive than the old monthly average. The remaining household can update its own rent, utilities, and supplies plan before the first solo or revised payment is due. Do not assume a departing roommate remains responsible for later costs without checking the actual agreement.

Close with a short written summary

Send everyone the same small settlement summary: the cutoff date, each final item and coverage period, who paid, the agreed calculation, transfers made, and any items awaiting a statement. Set a reminder to check pending bills when they arrive. If a charge is disputed, mark it unresolved rather than burying it inside a total.

Here is a useful last pass:

  • Are all already-paid bills marked settled, not charged again?
  • Does each pending item have an owner and a review date?
  • Are deposit contributions and possible refunds separate from spendable cash?
  • Has each recurring account been checked for its next charge?
  • Can everyone reproduce the final transfer from the listed items?

If you categorize expenses in Furt Money, review the household-related category after settlement and distinguish your own share from money you temporarily paid on behalf of others. Keep the detailed roommate ledger in a shared document that the group can review; a spending category by itself cannot establish anyone’s contractual share.

The next step is to list the bills that could still arrive after move-out. Put their coverage dates and payer next to them today, and the final conversation will be about visible numbers rather than hazy memory.