Worked example · filings
One filing obligation: identified in week one, closed by a receipt.
A filing obligation is finished when the authority acknowledges it, and not one step earlier. Everything before that — identifying the obligation and its date, calculating the figures from books that are closed rather than open, validating the position, assembling the workings and the evidence, and handing over a package that can be submitted without redoing anything — is preparation, and preparation is where the work is. At Par does not submit filings on a client’s behalf. The business, or the tax agent it has appointed, submits. The receipt comes back. Only then is the obligation recorded as complete, and only against that receipt.
Illustrative worked example. Not a customer case study. Sixmile Digital is an invented sixteen-person digital services company, and every figure and interval below is invented with it. This page names no rate, no form and no deadline. Those differ by jurisdiction and they change; an obligation register is the right place to hold them, and a web page is not.
The obligation existed long before the deadline did. That is the design, not a flourish.
Sixmile Digital carries several recurring filing obligations. Take one of them: a periodic return covering a three-month period. On the first day of that period the obligation already existed as an object in Sixmile’s register — named, dated, owned, and carrying the conditions that would have to be satisfied before it could move. The due date is not the start of the work. It is the last date by which a chain that began months earlier has to have finished.
The failure this replaces is ordinary and expensive: an obligation that becomes visible at the point it becomes urgent. Nothing about a late-discovered filing can be recovered by working harder in the final week, because the figures come out of books that are either closed or are not, and closing three months of books under deadline pressure produces exactly the return you would expect.
| State | What has to be true before it can move on | Who acts here |
|---|---|---|
| Identified | The obligation, its period, its due date and its owner are recorded from the date the business became subject to it — not from the date somebody noticed it. | At Par |
| Calculable | The books covering the period are closed and reconciled. A figure lifted out of an open period is an estimate wearing a return’s clothing, and it will disagree with the ledger by the following week. | At Par, plus whatever the business still owes the close |
| Calculated | Every figure derived from the ledger, each one traceable back to the entries beneath it, with the workings kept rather than discarded once the number is obtained. | At Par |
| Validated | Checked back to the control accounts, against the prior period, and for internal consistency. Anything requiring a judgement the books cannot make is flagged rather than resolved. | At Par |
| Packaged | The return in its required form, the workings, the supporting evidence, and a plain summary of what is being declared and what it rests on — complete enough to submit without reconstructing anything. | At Par |
| Handed off | Delivered to the business or its appointed agent on a dated, recorded handover that names the recipient, the due date, and what remains to be done. | At Par hands over; the recipient accepts |
| Submitted | Filed through the official channel by the business or by the agent it has appointed, under their own credentials or their own agent authority. | The business or its agent. Never At Par. |
| Complete | The acknowledgement or receipt from the authority is in hand and recorded against the obligation, with its reference and its date. | At Par records it; the receipt is what decides |
Eight states. At Par performs six of them, records the eighth, and never performs the seventh. The seventh is the one that binds Sixmile to an authority, and it is the reason the other seven are worth doing properly.
A return is an output of the books. If the books are open, there is no figure yet.
The most common cause of a defective return is not arithmetic. It is a return calculated out of a period that had not been closed, so the figures were extracted while transactions were still being categorised. The return and the books agreed on the afternoon it was prepared and disagreed by the following Tuesday, and nobody could say which of the two had moved.
For Sixmile the sequence ran the other way round. The period was closed on a stated date, and the return was calculated after that, from the closed ledger. The reconciliation between the accounting figures and the declared figures was written out line by line, because those two numbers are almost never the same and the difference between them is the first thing any reviewer asks about. A return that cannot explain its own difference from the accounts it came from is a return that will be explained under pressure, later, by whoever is available.
Validation then ran four ways, none of which is a recalculation of the same sum by the same method:
- Back to the control accounts. Each figure agrees to the ledger balance it was drawn from — not to a working paper that agreed to it at some earlier point.
- Against the prior period. A figure that has moved sharply is either explained or it is a mistake. Both are worth establishing before submission rather than in correspondence afterwards.
- Internally. The relationships inside the return hold: totals against components, and the arithmetic between them.
- Against what is missing. A period containing an unresolved item produces a return containing an unresolved item. The honest response is to name it, not to select the likelier figure and move on.
One item did not calculate. A payment to an overseas supplier had a treatment that turned on a judgement the books cannot make on their own. At Par did not make it. The item was isolated; both positions were prepared, with the amount each produces and the workings behind each; the obligation moved to a named held state with its due date still running and still visible; and it went to Sixmile’s appointed tax agent nineteen days before the return was due, rather than two. The agent decided. The return was completed on the decided basis, and the decision was recorded against the obligation with who made it and when.
A prepared package is not a filed return.
What went across was a package rather than a figure in an email. Six things, assembled so that the person submitting has nothing left to work out and the person reviewing it in two years has nothing left to reconstruct.
- The return itself, complete in the form the jurisdiction requires, with nothing left to be derived by whoever submits it.
- The workings behind every figure, each traceable to the ledger entries underneath.
- The supporting evidence for the items a reviewer would reach for first.
- The reconciliation between the accounting figures and the declared figures, set out line by line.
- A plain summary of what is being declared, what it rests on, and the one judgement that was referred out — who decided it, on what basis, and when.
- The due date, what remains to be done, and who is doing it, stated in writing rather than assumed.
What the handover was not. Sixmile’s obligation was not discharged by receiving that package, and the register did not pretend otherwise. A prepared package is a document. A filed return is an act, performed by somebody with standing to perform it, recorded by an authority and evidenced by an acknowledgement. The gap between those two is where obligations are actually missed, and it is almost never missed through disagreement — it is missed because each party believed the other one had it.
So the gap is closed by treating it as a real state rather than a formality. The handover is a dated event with a named recipient. The obligation stays open and visible with its due date running. Its state reads handed off — awaiting submission, which is a phrase that sounds unfinished because it describes something unfinished. And the reminders run on the obligation, not on the package, because a package that has been sent stops generating anxiety in exactly the way an unfiled return does not.
The boundary, stated plainly. At Par does not submit filings on a client’s behalf. That is not a default setting, an option at a higher service level, or something that begins to happen once a client says the word. Where a business wants submission handled end to end, the right answer is a registered tax agent or a licensed representative appointed to do exactly that — a legitimate and often sensible arrangement, and one At Par does not provide. Sixmile has such an agent, and the division of labour between them is written down rather than inferred.
The receipt. The agent submitted. The acknowledgement came back carrying a reference and a timestamp, and that reference was recorded against the obligation, which then moved to complete for the first time. Until an acknowledgement exists, the honest state of a filing is submitted, not yet acknowledged — and a register that records completion on the strength of somebody having sent something has recorded an intention rather than a fact.
Where At Par fits — and the limits.
Six of the eight states above are the work At Par does, where a filing is in scope: the obligation identified with its period, date and owner from the beginning; the books closed so a figure exists to calculate; the figures derived from the ledger with the workings kept; the position validated against the control accounts, the prior period and itself; the package assembled complete; and the handover made as a dated event to a named recipient. The eighth state — complete — is recorded against the acknowledgement and against nothing else. A qualified accountant (ACCA) is accountable for the work, and it rests on bookkeeping and month-end close, because a return prepared over an unclosed period is a guess with a form around it.
What is in scope differs by jurisdiction and belongs in an engagement at the start rather than in a conversation three days before a due date. Nothing on this page states a rate, a form, a threshold or a deadline for any jurisdiction, deliberately: those need checking against a primary source on the day they are relied on, and a page that asserted them would be wrong within a year. The wider question of which acts stay with a business when its finance is outsourced is set out in who controls payments, filings and communications, and the close that has to happen before any of this is possible is walked through in one month-end close.
Asked by owners who carry the obligation whoever prepares it.
When is a filing obligation actually complete? +
When an acknowledgement or receipt from the authority is in hand and recorded against the obligation, with its reference and date. Not when the figures were finished, not when a package was handed over, and not when somebody pressed submit. Submissions can be rejected, can fail validation at the authority’s end, and can sit unprocessed. A register that closes an obligation at any earlier point is recording an expectation, and the difference only becomes visible when a penalty notice arrives for something everyone believed was done.
What should a prepared filing package contain? +
Enough that the person submitting it works nothing out, and the person reviewing it in two years reconstructs nothing. In practice: the return complete in its required form; the workings behind every figure, traceable to the ledger entries beneath them; the supporting evidence for whatever a reviewer reaches for first; the reconciliation between the accounting figures and the declared figures; a plain summary of what is being declared and what it rests on; and the due date with a statement of what remains and who is doing it.
Can a return be prepared from books that have not been closed yet? +
It can be attempted, and it is where most avoidable filing errors come from. Figures pulled out of an open period keep moving after they are extracted, so the return and the ledger disagree within days and nobody can say which one changed. Closing first also surfaces the unresolved items that would otherwise be silently absorbed into a declared figure. Where a deadline genuinely cannot wait for a close, the position taken should be documented as provisional, with the difference identified rather than discovered later.
What should happen when a figure on a return depends on a judgement the books cannot make? +
It should be isolated and escalated, not absorbed. The right output is the item stated clearly, both defensible positions prepared with the amount each produces and the workings behind each, and a decision requested from whoever is qualified and appointed to make it — usually the business with its tax adviser or appointed agent. What should never happen is that the choice is made by whoever is preparing the return, silently, because one answer looked more likely on the day. The decision and its author belong on the record beside the figure.
A package was prepared and handed over, and nobody submitted it. Whose failure is that? +
Responsibility for the filing sits with the business and its officers regardless of who prepared it, so the loss lands there. The operational fix is structural rather than a matter of reminding people harder: the deadline should attach to the obligation, not to the package, so it stays live after the handover; the handover should be a dated event with a named recipient rather than an email that was sent; and the state should read as unfinished until an acknowledgement exists. Obligations are rarely missed through disagreement — they are missed because each party assumed the other one had it.
Should a business keep the workings behind a submitted return? +
Yes, and keep them attached to the return rather than in the folder of whoever prepared it. Three things make them worth holding: a query from an authority arrives long after anybody remembers how a figure was built; a change of provider or of staff otherwise erases the reasoning behind a position that is still being relied on; and the next period’s comparatives are only checkable against something. Workings that exist but cannot be linked to the figure they produced are close to useless when they are actually needed.
How far ahead of a due date should a return be prepared? +
Far enough that a problem found in it can still be solved by somebody other than the person holding the deadline. The useful measure is not a number of days but a sequence: the period closes, the figures are calculated from closed books, the position is validated, anything requiring a judgement goes to whoever is entitled to make it, and the package is handed over with time for the submitting party to review it. Working backwards from a due date through that chain gives the honest start date, and it is almost always earlier than expected.
Is a submission confirmation from accounting software the same as an acknowledgement from the authority? +
Not necessarily, and treating them as identical is a common way for a filing to be believed complete when it is not. Software can confirm that it transmitted something; an authority acknowledges that it received and accepted a return, usually with its own reference. A transmission can be rejected downstream for reasons that never surface in the sending system. The evidence worth recording is the one issued by the authority, carrying a reference that can be quoted back to it.
Tell us which filings you carry. We’ll show you what we would prepare — and what stays yours to submit.
Which obligations, on what cycle, prepared by whom today and submitted by whom. We will map that against the eight states above, including the parts we would not be the right answer for.
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Reviewed by an ACCA on the At Par team · Last updated 29 July 2026 · Illustrative worked example. Not a customer case study. Sixmile Digital and every figure shown are invented, and no rate, form or deadline of any jurisdiction is stated. See what we actually do.