Published October 27, 2026.
Security deposit interest is one of the few renewal-adjacent topics where the rule can change at a state line and at a building size. A property with 40 units in one state and 8 units in another may have different obligations for the same deposit amount. This review looks at how public sources describe those rules and how a renewal team can keep the notice packet aligned without interpreting the law itself.
Research question
The question is administrative: when a renewal notice packet is prepared, what deposit interest information might need to accompany it, and what source should the property use to decide? The review does not attempt to compute interest, determine whether a particular deposit is covered, or resolve a dispute.
The unit of observation is the property's rule card, not the individual tenant file. A rule card that states the obligation, the source, and the check date can be applied consistently across a renewal wave.
What the public sources cover
State statutes are the primary source. Legal information portals such as the Cornell Legal Information Institute index state codes and can point to the relevant chapter, but the official state code or legislature site remains the authoritative text. A property should record the exact section it relies on, not a summary from a blog or a vendor.
Federal sources set a floor for federally assisted housing and fair housing conduct but do not replace state deposit rules. HUD guidance and the fair housing regulations are relevant to how notices are delivered and how residents are treated, not to the interest rate itself.
Consumer finance sources describe the rental relationship in general terms and are useful for resident communication, but they are not a substitute for the state statute.
Building the rule card
A workable rule card has five fields: the state, the building size threshold if the statute uses one, the deposit type covered, the interest or notice obligation, and the source date. Add a sixth field for the person who confirmed the rule and how they confirmed it.
The card should state what the property does, not what the law requires in every case. For example, a card might say that the property issues an annual interest statement with the renewal packet where the state requires it for buildings above a threshold, and that the statement is prepared by the accounting team.
Where the renewal packet intersects
If the property issues a deposit interest statement, the renewal packet is a natural delivery point because the resident is already receiving documents. The coordinator can check that the statement is included, that the amount matches the accounting record, and that the delivery method matches the notice rules.
The coordinator should not calculate the interest. That belongs to accounting or the property manager. The administrative check is presence, consistency, and evidence of delivery.
Limits of this review
This review does not establish that any particular state requires deposit interest. It does not address local ordinances, which may add requirements. It does not address the interaction between a deposit and a concession, such as a waived deposit, which can change the analysis.
The sources are public and general. A property with a specific question should route it to counsel or the state housing authority rather than relying on this summary.
Method for keeping the card current
Review the card annually before the renewal season and whenever a property changes ownership, management, or state. Record the review date even when nothing changes. A card with no review date cannot be distinguished from a card that was never checked.
When a rule changes, update the card, note the change, and identify the renewal files that may need a corrected statement. Do not silently apply the new rule to a packet that has already shipped.