TC 294: Tentative Carryback Disallowance

What the code actually does

IRS Document 6209 defines TC 294 as "Tentative Carryback Disallowance with Interest Computation Date": it is "used to adjust a previously posted tentative allowance (e.g. TC 295 or 305), contains a beginning interest computation date, and can carry TC 290, 291 or penalty code." TC 294 cannot post on its own — a TC 295 or 305 must already sit in the module (the IRS's record for one tax period within the account), and the TC 294 amount can never exceed what that earlier credit allowed. It is a debit: it puts back some or all of the money a tentative allowance had put out.

The "interest computation date" is the operative detail. A tentative carryback allowance under TC 295 is paid out on a 90-day statutory clock with no real audit first — the IRS examines the claim afterward. When that later review finds the taxpayer was not entitled to the full amount, TC 294 reverses the excess and starts interest running from the date supplied with the transaction, not from today.

Why this is different from an ordinary tax increase

A routine additional assessment like TC 290 raises the tax liability itself. TC 294 does something narrower: it can only unwind money that TC 295 or TC 305 already advanced, and only up to that amount. IRM 21.5.9, Carrybacks, treats the pair as linked adjustments rather than independent transactions — the current, curl-verified text of that chapter names TC 294 and TC 295 together when describing how carryback-related account adjustments are separated from the taxpayer's general tax adjustment.

That link matters for reading a transcript: a TC 294 with no TC 295 or 305 anywhere in the account history is not a code operating as designed. If the pairing is missing, the assessment should not be taken at face value without asking the IRS or a transcript specialist to explain where the underlying tentative allowance actually is.

What this means for your account

If TC 294 appears, the IRS previously paid a tentative refund tied to a net operating loss, capital loss, or credit carryback, and has now decided part or all of it was not warranted. Interest on the amount being taken back starts from the interest computation date carried with the transaction, which can be well before the TC 294 posting date itself — so the dollar amount on the transcript understates what is actually owed by the time it is discovered.

This is not a penalty for wrongdoing by itself; a tentative allowance is deliberately paid before a full review, so a later disallowance is a built-in feature of the program, not automatically a sign of an inaccurate return. But it does mean the account balance needs to be checked against the interest computation date, not just the TC 294 amount, before agreeing to any figure the IRS states is owed.

What TC 294 gets confused with

TC 294 is easy to mistake for TC 304, which does the identical job — disallowing a tentative carryback allowance with an interest computation date — but only when Examination made the determination, carries Doc Code 47 instead of 54, and behaves "same as TC 300" rather than "same as TC 290." A TC 294 on the transcript signals a processing-level correction; a TC 304 signals the disallowance came out of an actual examination.

It is also not the same as TC 299, the general abatement-with-interest-computation-date code: TC 299 is explicitly barred from combining with a TC 294 or 295 adjustment on the same document under IRM 21.5.9, precisely because the two serve different adjustment tracks on a carryback module.

The practitioner's actual next step

Confirm a TC 295 or 305 is actually present in the module before treating the TC 294 amount as final — the code cannot legitimately post without one.

Read the interest computation date on the TC 294 line, not the posting date, when explaining to a client how much interest has already accrued on the amount being taken back.

Check whether the disallowance came from routine processing (TC 294) or an actual examination (TC 304) before advising on appeal rights, since the two tracks carry different procedural options.

Pull the full account history with the IRS Transcript Decoder rather than reading TC 294 in isolation — the size of the original TC 295/305 allowance is what tells you whether this disallowance is partial or total.