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Security Deposit Return Deadline Calculator

Estimate a security deposit return deadline from a move-out date, editable return window, and optional mailing days.

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Inputs

days

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Results

Estimated Return Deadline

Planning estimate only; verify the governing lease, statute, notices, and counsel.

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Assumptions

  • All defaults are editable examples, not authoritative legal rules.
  • The calculator uses the dates, periods, rates, and caps entered by the user.
  • No jurisdiction-specific statute, lease rule, rent cap, deposit rule, or warranty rule is applied automatically.

Sensitivity preview

Return Window -10%: Estimated Return Deadline 2026-10-11

Return Window Current: Estimated Return Deadline 2026-10-14

Return Window +10%: Estimated Return Deadline 2026-10-16

Formula: Estimated return deadline = move-out date plus the user-entered return window plus optional user-entered mailing days.

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About this Security Deposit Return Deadline Calculator

Estimate a security deposit return or itemization deadline from a move-out date and an editable return window.

How to use this calculator

  1. Enter the move-out or possession-return date.
  2. Enter the return window from the lease, statute, notice, or verified source.
  3. Add optional mailing days if your planning model includes mailing time.
  4. Verify the lease, statute, deposit rules, notices, and counsel before relying on the estimate.

Key assumptions

  • All defaults are editable examples, not authoritative legal rules.
  • The calculator uses the dates, periods, rates, and caps entered by the user.
  • No jurisdiction-specific statute, lease rule, rent cap, deposit rule, or warranty rule is applied automatically.
  • Inputs are processed locally in the browser and are not stored by Calwarden.

Accuracy and testing

Review formula sources, default test cases, assumptions, unit handling, rounding rules, and changelog for this calculator.

View accuracy page

How this calculator works

The calculator adds the user-entered return window and optional mailing days to the move-out date.
Estimated return deadline = move-out date plus the user-entered return window plus optional user-entered mailing days.

Inputs explained

Move-out date

The date possession ended, keys were returned, or the clock starts under the rule you verified.

Return window

The editable number of days allowed for deposit return or itemization in your planning model.

Mailing days

Optional extra days you choose to include for mailing or internal planning.

Understanding your results

The result is an estimated deposit return deadline from your inputs only. It is not a landlord, agency, court, or legal determination.

Example scenarios

Practical example

If move-out is 2026-08-01, the editable return window is 21 days, and mailing days are 0, the estimated deadline is 2026-08-22.

Key Features

  • Instant Calculation
  • Private & Secure
  • Mobile Optimized

Things to Keep in Mind

Planning estimate/date math only; not legal advice, not an official court, agency, landlord, business, or warranty determination. Verify the lease, contract, statute, warranty terms, notices, and counsel before relying on any date or amount. Calculations run locally in your browser for privacy. The calculator does not evaluate service methods, holidays, tolling, waiver, local ordinances, lease riders, contract amendments, notice delivery proof, habitability issues, warranty exclusions, or dispute facts.

Tips & Best Practices

  • Confirm the event that starts the clock, such as move-out, possession return, or forwarding address receipt.
  • Save move-out photos, key-return proof, mailing receipts, and itemization records.
  • Use an earlier internal reminder than the calculated deadline.

Frequently Asked Questions

Is this legal advice?
No. This is a planning estimate and date-math tool only. It does not determine legal rights, deadlines, penalties, compliance, or enforceability.
Does this apply the law in my jurisdiction?
No. No jurisdiction-specific legal rule is hardcoded as authoritative. Enter the notice period, grace period, return window, cap, or warranty period from the document or source you have verified.
Are my lease, contract, rent, or warranty details stored?
No. The calculator runs client-side in your browser and does not send your entered dates or amounts to Calwarden.
Does this apply my state security deposit deadline?
No. Enter the return window you have verified. The calculator does not hardcode state deposit deadlines, deductions, itemization requirements, or mailing rules.