Your Deposit Deadline Says 30 Days. Is That Your State’s Statute, or the Fallback?

A tenant moves out of an apartment in Bend, Oregon on Thursday 3 September. You pick OR from the dropdown, enter the date, and the calculator answers: OR security deposit return deadline (30 days), Saturday 3 October. It reads like a lookup. It looks like the tool went and found Oregon's statute.

It didn't. Oregon is commonly cited at 31 days, and the calculator has no entry for Oregon at all — the 30 you are looking at is a default that fires whenever the state you chose isn't in the table. This post is about how to tell those two numbers apart. How wide the real spread is across states, and why missing the deadline usually costs several times the deposit, are covered in why security deposit return deadlines range from 14 to 60 days; start there if you want the case for tracking the date at all. This one assumes you already have a number on screen and need to know whether to trust it.

The dropdown is longer than the table behind it

The state selector offers all fifty states plus the District of Columbia. The statutory figures the calculator actually encodes cover sixteen of them:

• 14 days — Arizona, Hawaii, New York
• 15 days — Florida
• 21 days — California, Wisconsin
• 30 days — Massachusetts, New Jersey, Pennsylvania, Texas, Washington
• 45 days — Illinois
• 60 days — Alabama, Arkansas, Colorado, West Virginia

Choose any of those and the result is a real figure. Choose one of the other thirty-five — every state not on that list — and you get 30 days, because that is the fallback value written into the tool for jurisdictions it has no entry for. Nothing on screen distinguishes the two cases. The result line interpolates whatever you selected, so an unencoded state produces "WY security deposit return deadline (30 days)" with exactly the same confidence as an encoded one produces "TX security deposit return deadline (30 days)". One of those sentences is a statute. The other is a guess wearing a state abbreviation.

Thirty is the worst possible default, precisely because it is usually right

If the fallback were something absurd — 7 days, 90 days — nobody would be fooled for long. The problem is that 30 days genuinely is the most common statutory window in the United States. Ohio, Michigan, North Carolina, Nevada, Tennessee, Missouri, Iowa, Kansas, New Mexico, South Carolina and a dozen more sit at roughly 30 days, so for most of the unencoded states the default lands on the right answer by coincidence.

A default that is right two-thirds of the time is more dangerous than one that is always wrong, because it trains you to stop checking. You use it for a Nevada move-out, you later confirm the statute, it matches, and you conclude the tool knows the fifty states. Then you use it for Virginia.

Where the fallback is most likely to bite

Among the thirty-five states the table doesn't encode, these are the ones commonly cited at something other than 30 days — the ones where accepting the default silently gives you the wrong date:

• Shorter than 30: Alaska, Nebraska and Vermont are commonly cited at 14 days; Delaware and Rhode Island at 20; Minnesota and Idaho at 21. In every one of these the default is too generous, which is the failure mode landlords should worry about — you think you have until the 30th and the statutory clock ran out on the 14th.
• Longer than 30: Indiana, Maryland, Mississippi, Virginia and the District of Columbia are commonly cited at 45 days. Here the default is too tight, which mostly costs a tenant standing — you accuse a landlord of being late on day 31 when the statute gives them another fortnight.
• Off by one: Oregon at 31 days. This is the one that will never get caught by eye, because a one-day discrepancy in a date sixty days out reads as an arithmetic quibble rather than a wrong statute.

Treat all of those as commonly reported figures rather than settled law — several states also split the window depending on whether deductions are being claimed, and legislatures amend these numbers. The point is not to memorise the list; it is that "my state wasn't in the table" is a specific, checkable condition, and the sixteen states above tell you exactly when it applies.

One date box, three different day-zero events

The second thing the single-field design flattens is which event starts the clock. The input is labelled generically as a start date, and only the result calls it "move-out / lease-end date" — but those are already two different events, and state statutes key off at least three:

• Termination of the tenancy — the lease's end date, whether or not anyone has left.
• Delivery of possession — keys returned, unit vacated. A tenant who moves out ten days early may or may not have started the clock ten days early.
• Receipt of the tenant's forwarding address — in several states, including Texas, the landlord's obligation does not mature until the tenant supplies an address to send the deposit to.

The calculator adds days to whichever date you typed. It has no opinion about which of the three you should have typed, and choosing wrong shifts the entire deadline by however far apart those events fell. In a normal tenancy they land within a day of each other and it doesn't matter. In the tenancies that end up in dispute — early departure, abandonment, a tenant who never sent a forwarding address — they diverge by weeks, and that gap is exactly what the argument is about. Settle which event your statute names before you pick a date, not after.

The deadline does not step off a weekend

Several deadline calculators on this site roll a result forward when it lands on a Saturday, Sunday or public holiday. This one deliberately does not: it adds calendar days and returns whatever day that is, which is why the Oregon example above landed on a Saturday and stayed there.

That is the right default for a statutory window measured in calendar days, and it is also a practical warning. A deadline of Saturday 3 October means the cheque has to be in the mail on Friday. Landlords who schedule the deposit return for "the deadline" and discover it is a weekend have lost two days, not gained them. Look at the day of the week the result falls on, not just the date.

A two-minute check before you rely on the number

1. Is your state in the sixteen listed above? If not, the number you are seeing is the 30-day fallback, not a lookup.
2. If it is the fallback, search your state's landlord-tenant statute for the deposit-return section and confirm the figure. This takes a minute and settles it permanently for the properties you manage.
3. Confirm which event your statute uses as day zero, and enter that date rather than whichever one you happen to have to hand.
4. Check whether the statute shortens or lengthens the window when deductions are claimed, and check what day of the week the deadline falls on.

With those four settled, the Security Deposit Return Deadline calculator does the part that is genuinely tedious — counting calendar days across month boundaries without an off-by-one — and you supply the part it cannot: knowing whether the number it applied is your state's, or everyone else's.

General information, not legal advice. Deposit deadlines, day-zero triggers and penalty provisions vary by state, by lease, and by local ordinance, and change by legislative session — confirm the current figure in your state's landlord-tenant statute or with a local attorney before relying on it in a dispute.