How do I fix reasonable cause statements?

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Answer

It works best when it identifies specific causes with dates and evidence, explains reliance on professional advice where that applies, and shows prompt correction once the error was discovered. The route chosen for the first year affects the relief available for every year behind it.

How this gets fixed

It works best when it identifies specific causes with dates and evidence, explains reliance on professional advice where that applies, and shows prompt correction once the error was discovered. Generic assertions are the most common reason these fail.

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The exception that catches people

A reasonable-cause statement is not a plea for leniency. It is a documented narrative of what happened, in what order, and why an ordinarily prudent person would have acted the same way.

How do I fix reasonable cause statements?
ItemAmount
Years unfiled5
Forms due per year1
Assumed penalty per formUS$8,000
Exposure before any reliefUS$40,000
Tax actually owed on the incomeUS$0

US$40,000 of exposure against nil tax. That asymmetry is why the disclosure routes exist and why the sequence of filings matters more than the arithmetic — filed in the right order under the right route, the penalty position can be very different from this.

The figures here are an illustration, not an engagement: amounts are picked so the mechanism is easy to follow, and every rate or threshold is an assumption of the example. Before anything is filed for you, each one is confirmed with the issuing authority for your own tax year.

What to do next

The full treatment — who it binds, the deadline, the penalty and the fixed fee — is on Reasonable cause statements — penalty relief. Describe the situation in your own words; translating it into forms is our job.

Reviewed against current guidance for the 2025 and 2026 filing seasons by Udit Gupta, Cross-Border Tax Expert, Legal Quotient Consultants. General information, not advice for your circumstances — call our 24-hour helpline to discuss your own position.

International tax accountant, in practice

If you came here for international tax accountant, this is where it is dealt with. The subject is reasonable cause statements, and the page covers who it reaches, what then has to be filed, and what we charge to do the work.

Cross-border situations we are engaged for

Case study 1

Rewriting a statement of general assertions as a dated chronology

The first version had been written by the client and read as an appeal to fairness: a hard year, an oversight, an assurance that it would not recur. Nothing in it could be checked. We took the same underlying facts and rebuilt them as a sequence of dated events, each tied to a document already in the client's possession, and cut everything that described feelings rather than conduct. The engagement produced a statement of much the same length and an entirely different character, in which every assertion the reader might doubt had something attached to it.

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Case study 2

Reliance on an adviser evidenced from the engagement record

The client's position was that their preparer should have raised the filing. Stated that way it is an allegation and does little. We worked through the engagement terms, the annual questionnaires and the email record, and found that the relevant question had never been put to the client at all. The statement then described reliance as a documented course of conduct, meaning what was engaged for, what was supplied and what was returned, rather than as a complaint about a third party. The engagement produced a submission resting on documents that neither party could later characterise differently.

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Case study 3

A cause that ended partway through the years under penalty

Illness explained the earliest years convincingly and did not explain the later ones, where the client had recovered and the filings still had not been made. A single explanation stretched across all the years would have been the easier draft, and it would have failed on the years it did not fit. We split the statement, evidenced the medical period with its own documents and dates, and dealt with the remaining years on their own facts. The engagement produced a submission that distinguished the years rather than one argument covering a period it could not reach.

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Case study 4

Establishing the discovery date from third-party correspondence

The client could not say when they had first learned of the problem, and the strength of the prompt-correction element depends on that date being fixed. It was found in the correspondence: a letter from an institution abroad that had prompted the client to ask a question, and the dated reply to it. The statement was then built around that point, covering what was known before it, what was done after it, and how long each step took. The engagement produced a chronology anchored to documents rather than to a client's recollection of a year they remembered poorly.

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Case study 5

Records destroyed abroad and rebuilt before the statement was written

The cause asserted was a loss of records, which is a good cause and an easy one to state badly. We obtained what could be replaced from the institutions themselves, documented what could not be replaced and why, and kept the insurer's and the building's correspondence about the event. Only then was the statement drafted, so that the loss was described with evidence and the reconstruction work was visible as part of the response. The engagement produced both the rebuilt records and a statement in which the asserted cause was the documented one.

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Case study 6

Reliance argument dropped when the file showed the adviser was not told

The client wanted the statement built on their preparer's failure to raise the filing. The correspondence did not support it, because the question had been asked in writing and the answer given had been incomplete. Building the submission on reliance would have put a claim on the record that the documents contradicted. We used the other facts available instead, meaning the timing of events, what was done once the position was understood, and the evidence for each step, and said nothing about reliance. The engagement produced a statement that no document in the file could be used to undermine.

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Case study 7

Selling Into the US Without an Entity, and Filing in Several States

State obligations are set by each state, and a treaty does not reach them. The review measures activity against each state's own thresholds and separates the states where registration is required from the ones where it is not.

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Case study 8

An IRS Notice for a Year the Client Believed Was Settled

Most notices are proposals rather than assessments, and they carry a response window that is shorter than it looks. The engagement reads what is actually being proposed, gathers the support, and replies inside the window with the position rather than a request for time.

Read how this one runs

All case studies — every published engagement in one place.

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What people ask us about Reasonable cause statements — penalty relief

What counts as reasonable cause for a late filing?

Events, dated, with something to evidence them. The standard the statement has to satisfy is what an ordinarily prudent person would have done in the same circumstances, so the content is a narrative: what happened, in what order, and why the course taken was reasonable at the time. Illness, bereavement, a loss of records, or specific advice from a professional adviser can all support it, and each is credible only with dates and documents attached. What does not count is a description of a state of mind. Being unaware of an obligation is the conclusion, and the statement has to supply the events.

Does not knowing about the rule count as reasonable cause?

On its own, no, and it is the most common way these statements fail. An assertion that the filer did not know is a claim about knowledge, with nothing in it for the reader to test. What can carry weight is the account of how that came about: who was engaged, what they were asked, what they were told, and what questions were never put. That converts the same situation into dated events with documents behind them. The test is whether an ordinarily prudent person in those circumstances would have acted the same way, which is a question about conduct rather than awareness.

Can I say my accountant was responsible for the mistake?

Reliance on professional advice can support a reasonable-cause statement, but not as an accusation. What has to be shown is the reliance itself: that a competent adviser was engaged, that they were given the facts they needed, and that the filer acted on what they were told. Engagement letters, questionnaires and correspondence are the evidence. Where the record shows the adviser was never told something material, the reliance argument weakens sharply and the statement is better built on other ground. The distinction being tested is between a filer who relied reasonably and one who left a question unasked.

What documents should I attach to a penalty relief request?

Whatever fixes the chronology. Medical records or a death certificate for the period asserted, correspondence showing what an adviser was asked and told, engagement terms, an insurer's or a firm's letter for a loss of records, and the material that establishes the date the error was discovered. Then the evidence of what happened next, because prompt correction after discovery is part of what makes the account persuasive. A statement whose assertions each point to an attached document is a different submission from one that asks to be believed, and that difference decides most of them.

Why was my penalty relief request refused?

The usual reason is that it asserted rather than evidenced. Statements that describe circumstances in general terms, such as a difficult year, an oversight, or unfamiliarity with the requirement, give the reader nothing to verify, and generic assertions are the most common cause of failure. Three things are worth checking in a refused request before it is put again: whether each cause is tied to specific dates, whether documents were attached to support them, and whether the account showed what was done once the error came to light. A refusal on a thin statement is not a ruling on the underlying facts.

Does fixing the mistake quickly help my case?

It is one of the elements the statement is built on. An account that shows the error being corrected promptly once it was discovered is consistent with a filer who acted reasonably. A long unexplained gap between discovery and correction undercuts everything else in the submission, however good the original cause was. So two dates matter and both need evidence: when the error came to light, and when the correction was made. Where the gap is real and has its own explanation, such as records to obtain or an adviser to engage, that explanation belongs in the statement too.

What is T1135 and who files it?

The T1135 is Canada's foreign income verification statement, filed by a resident whose specified foreign property exceeds the reporting threshold measured on cost, not market value. It is an information return, so it is required on the facts whether or not the property produced income or tax. Its penalties run per year and are not proportionate to tax owing, which is why missed years are dealt with as a package rather than one at a time. See T1135.

What is a PFIC, and why do Canadian mutual funds cause trouble for US persons?

A passive foreign investment company is a non-US company that is mostly passive by income or by assets — which describes almost every Canadian mutual fund and ETF. For a US owner the default regime taxes distributions and gains punitively with an interest charge for the years the value built up. Two elections fix it, and both need annual information the fund may not produce for you. Holding the same exposure through US-domiciled funds usually avoids the problem entirely. See PFICs and Canadian mutual funds.

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