TC 481: Offer in Compromise Rejected

What the code actually does

TC 481 records that the IRS closed an Offer in Compromise as either a rejection or a return, ending the TC 480 pending status — the same transaction code posts for both outcomes, but they are not the same thing. Per IRM 5.8.7.1.6, Terms/Definitions/Acronyms’s own definitions, a rejection "includes appeal rights"; a return "does not include appeal rights." The taxpayer is back to owing the full liability either way, and the two statutes that paused during the offer’s pendency both resume — but on different terms from each other, which is the part worth getting exactly right. The shorthand worth repeating to a client: the collection clock stops while the offer is pending, and the assessment clock gets the pending time plus one more year. For the file: the collection suspension runs from the TC 480 date to the TC 481 date. When the taxpayer did not appeal a rejection, the IRS dates the TC 481 thirty days after the rejection letter, so, for a TC 481 posted through AOIC on or after 2/2/2004, do not add another 30 days (IRM 5.8.10.7). The extra assessment year follows a rejection or a return alike on Form 656 Rev. March 2011 or later (IRM 5.8.10.8).

The collection statute — pendency plus 30 days

Under the current rule, reinstated by the Job Creation and Workers Assistance Act (effective March 9, 2002), the collection statute — the CSED, or Collection Statute Expiration Date, the deadline by which the IRS must collect an already-assessed balance — is suspended "while the OIC is pending, for 30 calendar days following rejection of an OIC, and for the period the rejection is being considered in Appeals." IRM 5.8.10.7 states the mechanics directly: "The CSED should be extended from the pending date (TC 480) until 30 calendar days after the rejection letter was issued (TC 481)," with the Appeals-consideration window added on top if the client appeals. The same IRM section notes that the IRS adds those 30 days to the TC 481 date itself on a rejection the taxpayer did not appeal, so measure from the TC 480 date to the TC 481 date and add nothing if the TC 481 posted through AOIC (the IRS's Automated Offer in Compromise system) on or after 2/2/2004; if it posted any other way, add the 30 days.

Recompute the new CSED from the actual TC 480/481 dates rather than estimating — The Federal Tax Desk’s CSED Calculator does this from the TC 480 and TC 481 dates.

The assessment statute — pendency plus a full year

The ASED (Assessment Statute Expiration Date — the deadline for the IRS to bill more tax, distinct from the CSED’s deadline to collect what’s already billed) extension is a different, larger number. Per IRM 5.8.10.8, for an offer on Form 656 (Rev. March 2011 or later — the currently controlling version), "the amount of any federal tax due for a tax period included on the offer may be assessed on the latest allowable assessment date plus the period of time the offer is pending, plus one year." That extra year beyond the pendency period is the piece most easily missed: it means the IRS retains the ability to assess additional tax on the offer periods well after collection activity itself has resumed.

The 30-day appeal window — real for a rejection, not for a return

A rejection can be appealed to the IRS Independent Office of Appeals — an independent review, by an office separate from whoever rejected the offer, of whether the rejection was correct on the merits. This is the taxpayer’s own right, not a discretionary courtesy, and the practitioner’s job is to make sure the client understands it and can actually exercise it, not just to track its deadline for statute-computation purposes. IRS.gov states the mechanics directly: "you have 30 days from the date of the OIC rejection letter to request an appeal," filed as Form 13711, Request for Appeal of Offer in Compromise, or an equivalent letter, mailed to the office that issued the rejection.

A returned offer is a different animal. IRM 5.8.7.1.6 defines a return specifically as a closure that carries no appeal rights, so the Appeals process above simply does not apply to it. "Rejected" and "returned" read almost identically on a quick scan of the closure letter — confirm which one the client actually received before advising on any appeal, since pursuing a Form 13711 appeal against a returned offer wastes the client’s time on a right that was never available; the letter itself should describe a different, informal way to contact the office that closed it.

The practitioner’s actual next step

Recompute both statutes separately the moment a TC 481 posts — the CSED and ASED extensions are not the same length, and using one formula for both will produce a wrong date on at least one of them.

Confirm whether the closure letter is a rejection or a return before advising on the appeal — only a rejection carries the 30-day Appeals right. Evaluate that window immediately once confirmed: an appeal gets the client reconsideration without the cost and delay of preparing a brand new offer, and missing the window forecloses that cheaper path, leaving a new OIC submission as the only route back in.

On a business account, confirm what the OIC statute extension does and does not reach: IRM 5.8.10.8 states plainly that "the filing of an OIC by a business does not extend the assessment statute for the purpose of assessing the trust fund recovery penalty" — a separately-running clock against any responsible individual that this rejection does not touch.

If recomputing the statutes surfaces a prior miscalculation on an existing or former client’s file, treat it as a potential claim circumstance, not just a data correction; policies differ on when notice is due, so confirm the specific notice trigger in the practitioner’s own professional liability policy.

What people mistake TC 481 for

TC 481 and TC 482 both end a TC 480 pending offer and are easy to treat as functionally identical because they land the account in a similar place. They differ in the collection statute, not the assessment statute (a rejection adds 30 days to the collection suspension; a withdrawal does not): a withdrawn offer (TC 482) carries the same one-year ASED extension as a rejection (Form 656 Rev. March 2011 or later). Treat the two codes as carrying the same ASED consequences rather than assuming a withdrawn offer is somehow gentler than a rejected one.