What to Do With a Check Nobody Ever Cashed

It's tempting to write off a stale, uncashed check as a gain once enough time has passed and the vendor never followed up, but that's not how the law treats it. The money still belongs to whoever was owed it, and after the dormancy period, the state steps in as custodian rather than the company simply keeping it. Recognizing it as income prematurely creates a real liability if a state audit later finds it should have been reported and remitted instead.

Each state sets its own dormancy period for different property types, and the clock generally starts from the last activity or contact related to that specific item, not from when the check was issued. Payroll checks, vendor payments, and unclaimed refunds can each have different dormancy periods depending on the state, which means tracking this by property type and by the state whose rules apply, usually based on the last known address of the payee, matters more than treating all unclaimed items the same way.

Before an item can be escheated, most states require a documented attempt to contact the owner, often a letter sent to their last known address, above a certain dollar threshold. Skipping this due diligence step is one of the most common findings in an unclaimed property audit, since it's an easy, concrete requirement to verify was or wasn't done, and failing to complete it can expose the company to penalties even if the underlying property was eventually reported.

Run a review at least annually: identify every check outstanding beyond a set period, attempt the required due diligence contact, and file and remit anything that's actually reached its dormancy period to the appropriate state. Keeping this as a standing annual task, rather than something addressed only when a state initiates an audit, is meaningfully cheaper and less disruptive than a multi-year lookback audit covering everything that was missed.

A simple annual review looks like this:

1. List every check and credit outstanding beyond a set period, sorted by property type and by the state whose rules apply.
2. Send the required due diligence contact, usually a letter to the payee's last known address, for items above your state's dollar threshold.
3. Identify items that have reached their dormancy period, counting from the last activity or contact rather than the date the check was issued.
4. File the unclaimed property report and remit the funds to the appropriate state, keeping a record of every contact attempt.
5. Review your accounting and payroll systems for stale items after any system change, so old checks don't drop out of view.

Many states offer a voluntary disclosure program that reduces or waives penalties for a company that comes forward proactively to report and remit unclaimed property it should have reported in prior years, compared to what happens if the state finds the gap through its own audit first. If your company has never filed an unclaimed property report, look into your specific state's voluntary disclosure program before an audit forces the issue, since the difference in outcome can be significant.

A change in accounting system, payroll provider, or AP platform is a common moment for old, unreconciled checks to fall out of view entirely, since a migration doesn't always carry forward every stale item cleanly from the old system. Whenever you switch a core finance system, build a specific step into the migration plan to review outstanding items from the old system rather than assuming they all transferred over correctly.

The same risk shows up after a merger or acquisition, where the acquired company's own stale checks and credits often haven't been reviewed against unclaimed property rules in years. Build a specific unclaimed property review into your post-close integration checklist rather than assuming it was handled by the seller before the deal closed.