The 10-Year Clock
Every tax assessment has a collection statute expiration date, or CSED. The IRS has 10 years from the date of assessment to collect the tax. After the CSED, the tax debt is legally uncollectible. The IRS must release any liens and stop all collection activity. The debt is gone.
This is one of the most powerful tools in tax resolution. A tax attorney who tracks CSEDs can develop strategies that run out the clock on old tax debts while resolving newer ones.
When the Clock Starts
The CSED starts when the tax is assessed. For a timely filed return, that is typically a few weeks after you file. For an audit, it is the date the additional tax is assessed. For a substitute for return, it is the date the IRS processes the SFR assessment. Each tax year has its own separate CSED.
What Pauses the Clock
Several events toll, or pause, the collection statute. Filing an offer in compromise tolls the statute for the time the offer is pending plus 30 days. Filing a Collection Due Process appeal tolls it. Filing bankruptcy tolls it for the duration of the automatic stay plus six months. Being outside the United States for six months or more tolls it. Requesting an installment agreement tolls it while the request is pending.
This is critical to understand. Every time you file an OIC and it gets rejected, you just gave the IRS extra time. I have seen cases where taxpayers filed three or four rejected offers and extended their CSED by years. A tax attorney calculates the impact on the CSED before recommending any action.
Strategic Use of the CSED
For clients with CSEDs expiring within the next few years, sometimes the best strategy is to do nothing aggressive. Get into CNC status and let the clock run. For clients with eight or nine years remaining on the CSED, waiting is impractical and an offer in compromise or installment agreement makes more sense. The CSED calculation drives the entire resolution strategy.