TC 488: Installment Agreement / Deferred Status

What the code actually does — and a citation limit worth stating

TC 488 updates a module (the IRS’s record for one tax period within the account) to a deferred or installment status — commonly referenced as status 14 — and removes it from active collection (Taxpayer Delinquent Account status). It reflects an account placed into an agreed payment posture rather than one the IRS is actively pursuing through the standard notice and levy sequence.

One honesty note: IRM 5.14.1, Securing Installment Agreements, governs IA policy and criteria in depth, but a live read of its current text does not name the specific status-code number 14 anywhere. Doc 6209 §8A (the IRS’s own internal Master File Codes reference, a free public PDF on IRS.gov) defines that number instead — a distinction worth knowing before citing 5.14.1 as the authority for the status number itself, rather than for the IA policy it actually documents.

The rule that gets this wrong most often

An active installment agreement does not suspend the CSED — the Collection Statute Expiration Date, the deadline by which the IRS must collect an already-assessed balance. IRM 5.1.19.3.5(6) states this without qualification: "The CSED is not suspended while an installment agreement is in effect." The ten-year clock keeps running for the full life of the agreement, which means a client can complete years of an agreed payment plan and still watch the statute expire on whatever balance remains — a genuinely favorable outcome for the client that a practitioner unaware of this rule might not think to plan around.

The exceptions that do suspend it

The rule above describes an active, in-force agreement specifically. Two distinct windows around it work differently: a pending installment agreement request suspends the CSED before the IRS accepts or rejects it, and the CSED stays suspended for 30 days after a rejection or termination, plus however long Appeals spends considering the rejection. Separately, IRC §6502(a)(2)(A) permits extending the CSED affirmatively in connection with certain Partial Payment Installment Agreements — a PPIA, unlike an ordinary agreement, only pays a portion of the liability over its term, which is the reason the statute needs an affirmative extension mechanism the standard agreement never requires. Neither of these contradicts the general rule above; they describe the request process and a narrower PPIA scenario, not the ordinary life of a standard agreement once accepted.

The practitioner’s actual next step

Confirm the agreement’s terms posted correctly and match what the client negotiated — payment amount, due date, and duration should all reconcile against the transcript.

Recompute the CSED on the assumption that it kept running throughout, using The Federal Tax Desk’s CSED Calculator — do not treat the agreement as a tolling event, and do not let the client assume it is one either.

Watch for default. A missed or late payment can move the account out of status 14 and post a TC 489 — the default code, not a pending-review status — back into active collection, and catching that quickly preserves the client’s options before the account re-enters the standard collection notice sequence. If the IRS proposes terminating the agreement, tell the client directly that this is not automatic and not final: IRM 5.19.8.4.16 confirms a proposed or actual termination is appealable through the Collection Appeals Program, a real right belonging to the taxpayer, not a courtesy. File Form 9423, Collection Appeal Request, within 30 days of the date on the termination notice, mailed or faxed to the office that issued it — an installment-agreement appeal does not require a prior managerial conference, so the practitioner can send the form directly without first requesting or waiting on any meeting with an IRS manager. Treas. Reg. §301.6331-4 backs the levy protection this creates: no levy while the agreement is in effect, for 30 days after a termination, and — if the taxpayer appeals within that window — while Appeals is considering it.

What TC 488 gets confused with

TC 488 and TC 530 (Currently Not Collectible) both remove a module from active collection, and it is tempting to treat "the IRS stopped pursuing this account" as one undifferentiated state. They reflect opposite financial pictures. TC 488 means the client can pay something and is doing so under agreed terms. TC 530 means the IRS determined the client currently cannot pay anything at all without hardship. Advising a client using the wrong frame — describing an installment agreement as if it were a hardship determination, or vice versa — misstates both their obligations and their options going forward.

TC 488 is also distinct from TC 489, status 21, even though both are installment-agreement-adjacent status codes. TC 488 reflects the agreement in force. TC 489 — Doc 6209 §8A titles it "Installment Defaulted" — reflects that same agreement breaking down and the module returning to standard delinquent-account processing. It follows a TC 488 rather than preceding one; seeing it on a transcript means the agreement the client thought was locked in no longer is.