Split the security deposit refund proportionally to each housemate's original contribution unless you all agree in writing to another method, such as equal shares. Document the agreement upfront, track payments and deductions in a shared spreadsheet, and handle the landlord's return with itemized records. This approach helps U.S. roommates avoid disputes over the refund, which landlords often issue after move-out for cleaning, repairs, or damages beyond normal wear and tear.
Set clear rules before move-in to divide any refund fairly. Common options include equal split, proportional to original payment, room size, nights stayed, or income-based shares. Each has tradeoffs: equal split simplifies math but ignores unequal upfront costs; proportional rewards those who paid more initially.
Use this decision tree to choose:
- Did all housemates contribute equally to the deposit? Split the refund equally.
- Did contributions differ? Split proportionally to original amounts paid, unless you agree otherwise in writing.
- Do rooms or usage vary significantly? Consider room size or nights-stayed split, but only if documented from the start.
- Are incomes uneven? Use income-based split for equity, but confirm all agree.
Sample written agreement script: "We agree to split any security deposit refund proportionally to each person's original contribution. If we decide otherwise, we will update this in writing. Signed: [Names and dates]." Keep a signed copy with your lease. Written rules provide evidence in disputes and clarify expectations.
Agree on a Deposit Split Rule Before Move-In
Establish the split method early to prevent conflicts. Proportional split - each person's share of the refund equals their share of the total original deposit - is common when payments differ. For example, if the total deposit is $3,000 and you paid $1,200 (40%), you get 40% of the refund.
Equal split works if everyone paid the same or wants simplicity. Room-size split bases shares on square footage; nights-stayed split adjusts for variable occupancy. Income-based uses salary ratios for those with uneven earnings.
Tradeoffs: Proportional favors upfront payers but ignores usage differences. Equal ignores contributions. Document the choice in a group text, email, or signed note. Review annually or before move-out. If changing the rule later, get unanimous written consent to avoid claims of unfairness.
Track Original Contributions and Expenses in a Shared Spreadsheet
Use a shared Google Sheet or Excel file for transparent records. Set permissions: owner for the lease signer, edit access for all, and protect formula cells to prevent errors.
Recommended columns:
| Column | Description | Example Formula (Google Sheets) |
|---|---|---|
| Housemate Name | Full name | N/A |
| Original Deposit Paid | Amount each paid upfront | N/A (enter manually) |
| Rent Share % | Proportion of total rent (for reference) | =B2/SUM($B$2:$B$5) |
| Shared Expenses Paid | Cleaning, repairs during tenancy | N/A (enter with receipts) |
| Move-Out Date | When each leaves | N/A |
| Proportional Share | Of total refund | =B2 * $F$1 / SUM($B$2:$B$5) (F1 = total refund cell) |
Enter original payments with receipts attached as comments or a linked folder. Update shared expenses monthly. Formulas auto-calculate shares when you input the total refund.
Sharing notes: Use Google Sheets for real-time edits and version history (enable in File > Version history). Update cadence: Review before move-out. Common mistakes: Forgetting to log receipts, overwriting formulas, or not exporting a final PDF. Back up monthly and share a read-only link with your landlord if requested.
Handle the Landlord Refund and Deductions
Follow this checklist when the landlord returns the deposit:
- Request an itemized list of deductions in writing upon move-out notice.
- Compare deductions to your spreadsheet records and photos of the unit's condition.
- Dispute invalid deductions promptly - note your state's process.
- Receive the refund (check or transfer) and log the total in your sheet.
- Divide per your agreement: Transfer shares via bank, Venmo, or Zelle with a note like "Security deposit refund share - [date]."
- Confirm receipts for all transfers and update the sheet.
Workflow: Take dated photos of the clean unit at move-out. Export the final sheet as PDF. Keep records for disputes. If one housemate receives the full check, deposit it and reimburse others immediately with proof.
Jurisdiction Notes on Landlord Rules
Landlord deposit rules vary by state; there are no federal standards for refunds or splits among housemates. Always check your local tenant laws.
In Texas, per the Texas State Law Library guide on security deposits, landlords must return the deposit or provide an itemized deduction list within 30 days of move-out. They cannot withhold for normal wear and tear, and tenants can sue for three times the wrongfully withheld amount plus fees in justice court for claims under $20,000.
In California, Bornstein Law notes on 2026 rules under AB 414 allow electronic refunds to a tenant-designated bank account within 21 days, with digital timestamps as evidence.
Consult your state's housing authority or a local attorney for specifics. These examples do not apply everywhere.
When to Get Professional Help
Seek a tenant lawyer or housing counselor for disputes over withholdings, unclear lease terms, or large amounts. In Texas, justice courts handle claims under $20,000 per the Property Code. Shared expense reimbursements among roommates are generally not treated as taxable rental income due to the personal nature of shared living, but verify with a tax professional as rules depend on your situation per sources like TurboTax community.
This is not legal or tax advice. Consult local laws or a professional for your circumstances.
FAQ
How do we split if one housemate paid the full deposit?
Proportional split gives that person 100% unless you have a prior written agreement for equal or another method. Document reimbursements to others if applicable.
What if the landlord withholds for damages - does one person eat the cost?
No - deductions come from the total deposit before splitting per your rule. Dispute unfair claims collectively with records.
Is a spreadsheet enough, or do we need an app?
A shared spreadsheet suffices for tracking contributions and splits. Apps can help with reminders but are not required for records.
Do we need a written agreement for the split?
Yes, to provide evidence in disputes. A simple signed note or email chain works.
What records should we keep after dividing the refund?
Keep the spreadsheet, receipts, transfer proofs, and landlord correspondence for disputes.
Are security deposit reimbursements taxable income?
Roommate reimbursements for shared deposits are typically not rental income per informal discussions like TurboTax community, but check IRS guidance or a tax pro for your case.
Next steps: Draft your split agreement today, set up the spreadsheet, and photograph your move-out condition. Review state tenant resources for your area.