Your numbers
Quick answer
What does the Security deposit split calculate?
How should a shared deposit be divided and returned? This calculator uses total security deposit, roommates, move-out deductions, and your personal deduction to estimate deposit share immediately in your browser.
With the values currently entered, the result is $1,006.67 — your estimated refund. It also shows original share, your shared deduction, and your personal deduction.
How to use the Security deposit split
- Replace the example values with your own numbers.
- Review the result and supporting figures as they update automatically.
- Check the formula and assumptions before using the estimate for a decision.
Inputs used
- Total security deposit
- Roommates — entered in people
- Move-out deductions
- Your personal deduction
Security deposit split formula
Split shared deductions equally, then apply personal deductions
Assumptions
- Everyone originally paid an equal share.
- Personal deductions belong only to the responsible roommate.
Practical guide
Security deposit split example and edge cases
How should a shared deposit be divided and returned? Let's use a concrete example, then look at the assumptions that can move the answer.
Example: A practical security deposit split scenario
For this example, use total security deposit of 3,600, roommates of 3 people, move-out deductions of 420, and your personal deduction of 80. These are starting values, so replace them with numbers that match your situation.
- Total security deposit
- 3,600
- Roommates
- 3 people
- Move-out deductions
- 420
- Your personal deduction
- 80
Calculated result$1,006.67your estimated refund
Start with your estimated refund. Then check original share, your shared deduction, and your personal deduction to understand what sits behind the main result.
Example results use the default display profile. The calculator above follows your selected country and units.
How to read the result
- Read the main result first. The supporting figures for original share, your shared deduction, and your personal deduction explain how the estimate is built.
- The method is Split shared deductions equally, then apply personal deductions. Keep the units consistent and use values from the same time period.
Edge cases worth checking
When total security deposit is unusual
Everyone originally paid an equal share. Double-check this input before relying on the result.
When your personal deduction is uncertain
Personal deductions belong only to the responsible roommate. Run a lower and higher value to see a useful range.
What changes the result most
Total security deposit
Use a current amount for total security deposit. Include fees or recurring costs that belong in the same figure.
Roommates
Use the count you expect in real life. Round up when a partial people cannot be purchased or used.
Move-out deductions
Use a current amount for move-out deductions. Include fees or recurring costs that belong in the same figure.
Try a different scenario
Small changes show whether the answer is stable or sensitive.
Total security deposit: 10% lower
3,240$886.67your estimated refund
Total security deposit: 10% higher
3,960$1,126.67your estimated refund
Roommates: 10% higher
3 people$1,006.67your estimated refund
Common mistakes
Check total security deposit
Everyone originally paid an equal share. Make sure this matches the number you enter.
Keep your personal deduction consistent
Personal deductions belong only to the responsible roommate. Use the same units and time period throughout the calculation.
Do not rely on one security deposit split scenario
Run a cautious case and an optimistic case. The range is often more useful than one exact-looking number.
Use this result well
How should a shared deposit be divided and returned?
It cannot replace a lender quote, lease, survey, or purchase contract.