Calwarden

California Security Deposit Deadline Calculator

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

Save

Inputs

days

Your values stay on this device.

Results

Estimated Return Deadline

Planning date only; verify current rules, delivery method, notices, deductions, and exceptions.

Report

Export and share

Document

Copy and share

Assumptions

  • All rates, caps, windows, premiums, and charges are editable planning examples.
  • No live local tax, utility, rent, legal, insurance, or program rate is fetched or guaranteed.
  • Calculations run client-side in the browser and are based only on the values entered.

Sensitivity preview

Return Window -10%: Estimated Return Deadline 2026-02-18

Return Window Current: Estimated Return Deadline 2026-02-21

Return Window +10%: Estimated Return Deadline 2026-02-23

Formula: Estimated return deadline = move-out date plus the editable return window days, counted as calendar days.

Related Tools

View All
California Rent Increase Calculator
Compare a proposed California rent increase with an editable planning cap without giving legal advice.
California Water Bill Estimate Calculator
Estimate a California water bill using editable water units, tier rates, sewer charges, and fixed fees.
California Electricity Bill Calculator
Estimate a California electricity bill from editable kWh tiers, rates, and fixed charges.
California Paycheck Calculator
Estimate California net pay from gross wages, deductions, and editable federal, California, payroll, and local tax rates.
California Overtime Calculator
Estimate California daily overtime pay from seven editable daily hour entries and a regular hourly rate.

About this California Security Deposit Deadline Calculator

Estimate a security deposit return deadline by adding an editable day window to a move-out date. The default window is 21 days, but you should verify the current rule and facts.

Who this calculator is for

  • California renters tracking move-out paperwork
  • Landlords planning deposit processing
  • Housing support teams doing date math

When to use it

  • Create a deposit-return reminder
  • Check a planning deadline from a move-out date
  • Document assumptions for a landlord or tenant file

How to use this calculator

  1. Enter the move-out date.
  2. Confirm or edit the return window days.
  3. Use the result as a planning reminder and verify official rules, notices, delivery method, and exceptions.

Key assumptions

  • All rates, caps, windows, premiums, and charges are editable planning examples.
  • No live local tax, utility, rent, legal, insurance, or program rate is fetched or guaranteed.
  • Calculations run client-side in the browser and are based only on the values entered.

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

Estimated deadline = move-out date + editable return window days. The calculator uses calendar days and does not decide legal compliance.
Estimated return deadline = move-out date plus the editable return window days, counted as calendar days.

Inputs explained

Move-out date

Date the tenant moved out or the date you are using as the verified start date.

Return window days

Editable calendar-day window. The default is 21 days, but current law, facts, and exceptions must be verified.

Understanding your results

The output is a date reminder, not a legal conclusion. It does not evaluate deductions, itemization, bad-faith claims, forwarding address issues, mailing rules, or evidence.

Example scenarios

Planning example

A 2026-01-31 move-out date with a 21-day return window gives an estimated deadline of 2026-02-21.

Key Features

  • Instant Calculation
  • Private & Secure
  • Mobile Optimized

Things to Keep in Mind

Planning estimate only; not tax, legal, insurance, utility, financial, or real estate advice. Verify current local rules, policies, rates, exemptions, caps, exceptions, official notices, utility tariffs, insurance declarations, and qualified advisors before relying on any result. This does not decide deposit deductions, itemized statement sufficiency, notice compliance, address issues, mailing rules, penalties, or legal remedies.

Tips & Best Practices

  • Keep photos, receipts, notices, and move-out inspection documents.
  • Verify how days are counted under current rules.
  • Confirm address and delivery requirements before relying on a date.

Frequently Asked Questions

Is this an official California calculation?
No. This is a planning estimate only. California rules, local ordinances, utility tariffs, insurance policies, exemptions, caps, exceptions, and official notices can change or vary by address and situation.
Are the default rates current?
Defaults are editable examples, not live rates or legal determinations. Replace them with verified local rates, policy terms, caps, notices, exemptions, and official sources.
Does Calwarden store my California housing or utility details?
No. The calculator runs locally in your browser and does not send your entered values to Calwarden.