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Unclaimed Property Filing Playbook

A source-linked starting point for finance teams preparing Delaware and California unclaimed-property reporting work.

Start with the ledger

Uncashed payroll checks, vendor credits, refunds, deposits, and dormant AP balances can all become state-reporting questions—even when unclaimed property is not part of your day-to-day operating vocabulary.

Why this belongs on your annual calendar.

Nearly every U.S. business can hold abandoned property. The task is not just finding old checks—it is establishing a repeatable way to identify dormant obligations, confirm the governing state, complete required outreach, and report when the facts call for it.

Missed reporting can create penalties, interest, and audit exposure. In some circumstances, long record look-backs can make old process gaps harder to reconstruct. A current, documented workflow is a practical form of risk control—not a prediction of state action.

Launch-state guide

Use state rules as a checklist, not a shortcut.

Filing schedules and dormancy periods depend on the holder, property type, owner information, and current agency guidance. The summaries below focus on common finance-team questions and link to primary state materials for confirmation.

Annual holder reporting

Delaware

Reporting deadline / frequency
For most non-banking, non-insurance holders, Delaware law sets an annual report and remittance deadline of March 1. Banking and insurance organizations follow different statutory dates, so confirm your holder category before calendarizing the work.[1]
Dormancy periods
Wages and other compensation for personal services are generally presumed abandoned after five years. Other property types have their own statutory treatment; confirm the applicable property code and current Delaware guidance.[1]
What to review and report
Review unpaid wages, outstanding checks, customer credits or refunds, vendor balances, and other obligations that may be owed to an owner and have remained unresolved through the applicable dormancy period.
Where to file
Submit through Delaware’s Office of Unclaimed Property holder-reporting process for the State Escheator. Delaware’s code requires web-based reporting for covered reports.[1]
Request a Compliance Readiness Review

Two-step annual process

California

Reporting deadline / frequency
For most businesses, California’s State Controller sets a Notice Report deadline before November 1 and a Remit Report window of June 1–15. Life insurers and some voluntary-compliance situations follow different timing.[3]
Dormancy periods
Payroll, wages, and commissions are generally subject to a one-year dormancy period in California. Many other common property types are three years, but the Controller’s property-code table controls the classification.[4]
What to review and report
Review wages, outstanding checks, accounts payable, credit balances, refunds, deposits, and other tangible or intangible property held for another person, based on the state’s reporting classifications.
Where to file
File with the California State Controller’s Office using its holder-reporting portal and the current report-cycle materials for your business or fiscal-year end.[3]
Request a Compliance Readiness Review

Who must file

It is not just a payroll problem.

Businesses, partnerships, nonprofits, financial organizations, and other holders may have reporting obligations when they hold property belonging to another person. The question starts with the liability record and the owner relationship—not with whether your company thinks of itself as an unclaimed-property business.

  • Uncashed payroll and expense checks: compensation and reimbursements can have their own statutory treatment.
  • Vendor credits and dormant AP balances: stale credits or payable balances may require owner and property-type review.
  • Unrefunded deposits and credit balances: customer-facing liabilities are not automatically excluded because they sit in an operating account.
  • Unknown owners or old entities: entity history and owner-address data can affect the state analysis.

If a deadline was missed

The first move is to organize the facts.

Late or incomplete reporting can result in penalties and interest, and it may invite questions about historical records. The appropriate response depends on the state, the property, the reporting history, and any correspondence already received.

A measured workflow helps: preserve relevant records, map entities and states, identify the period at issue, and coordinate with qualified tax or legal advisors when the question moves beyond administrative reporting.

Educational information only

This filing playbook is general educational information and is not legal, tax, or accounting advice. State rules, filing calendars, dormancy periods, owner-notice requirements, and voluntary-compliance options can change. Confirm current requirements with the relevant state agency and consult qualified advisors about your specific situation.

Sources / further reading

Confirm the current state guidance.

The source list is part of the playbook: use it to verify the current filing cycle and property classification before acting. Rules change, and a summary page cannot replace the state’s current instructions.

01Delaware Code Online — Title 12, Chapter 11, Subchapter IIStatutory definitions, abandonment periods, holder reporting, and State Escheator requirements.02Delaware Department of Finance — Unclaimed PropertyOfficial holder resources and Delaware program information.03California State Controller’s Office — Report Unclaimed PropertyOfficial holder-reporting calendar, report stages, and filing resources.04California State Controller’s Office — Property Type Codes and Dormancy PeriodsProperty-code reference for classifying reportable property and applicable dormancy periods.
Request a Compliance Readiness Review