A return that was submitted wrong and how to correct it

21 hours ago
3 min read

Introduction

You notice, while preparing the next quarter, that a figure in the last return was wrong. Perhaps a batch of purchase invoices was posted to the wrong period, or a rate was applied incorrectly, or an item was reclaimed that should not have been.

The temptation to quietly adjust it in the next return and say nothing is real, and it is the wrong instinct. Errors discovered by a bookkeeper and disclosed properly are routine. Errors discovered later by an inspection, or by a successor, are a different category of problem entirely. Disclose it yourself.

1. A return that was submitted wrong should be established precisely before anything is said

Vague self-reporting creates alarm without information. Do the work first.

Quantify the error exactly

Which period, which figure, how much, in which direction, and whether it is a one-off or repeated across quarters. Nobody can make a decision without the number. Write it on one line.

Work out whether it repeats

An incorrectly configured rate or a systematic posting error may have affected several periods. Check before you report on one. Review each affected quarter.

2. Tell the client promptly and plainly

They need to know, and they need to hear it from you. Do not delay it.

Say what happened without burying it

One paragraph: what was wrong, how much, what it means, what you are doing. Clients handle a clearly stated error much better than a vague one. Avoid technical language.

Explain the consequence honestly

Additional tax due, interest, a possible penalty, or a refund. Include the unwelcome parts rather than letting them emerge later. Give the figures.

3. Correct it through the proper route

The mechanism matters and it varies. Check the current rules.

Follow the correct disclosure or adjustment process

Some errors can be adjusted in a later return within limits, and some require a formal notification. Applying the wrong route turns a small error into a compliance issue. Take advice if unsure.

Keep the documentation

What was wrong, when it was found, how it was corrected, when it was reported. That record is what demonstrates a properly managed correction. File it with the period.

4. Be clear about who bears the cost

Fairness here protects the relationship. Decide it quickly.

Interest and penalties arising from your error

If the practice made the mistake, the practice should meet the penalty and any interest. That is the straightforward position and it is far cheaper than the alternative. Offer it without being asked.

Additional tax properly due is the client's

Tax that should always have been paid is not a loss caused by you, and saying so calmly at the same time as accepting the penalty is a fair and defensible position.

5. Change the process, not just the figure

An error without a process change will return. Fix the cause.

Add a review step where it went wrong

A second check on rates, a reconciliation before submission, a period-end cut-off routine. Name the control you have added. Tell the client about it.

Look at the workload behind it

Errors cluster where somebody is doing too much at a deadline. That is worth addressing honestly rather than attributing it to carelessness. Look at the deadlines.

Conclusion

Quietly fixing it in the next return is the wrong instinct: errors found and disclosed by a bookkeeper are routine, while errors found later by an inspection or a successor are something else entirely.

So quantify it precisely — period, figure, amount, direction — and check whether it repeats across quarters before reporting on one. Tell the client in one clear paragraph including the unwelcome consequences, and correct it through the proper adjustment or disclosure route, keeping full documentation. Meet the penalty and interest where the error was yours while explaining calmly that tax properly due remains theirs. Then name the control you have added.