Closing a compliance check: records to retain

Closing a compliance check should include a review of the written outcome, agreed adjustments, payment position and any remaining rights. Keep the final correspondence with the evidence pack and update future record controls to address the issues identified.

Confirm which taxes and periods the closure covers. A resolved issue does not mean every other year, registration or reporting obligation has been reviewed.

Read the written outcome for its exact scope

Obtain HMRC's final letter and identify the taxes, periods and issues it covers. The general compliance-check guidance explains that HMRC communicates the results in writing. ^[1] A message saying one query is resolved may not close every matter in a wider case. Ask the adviser to confirm whether the document is the relevant formal outcome and what, if anything, remains open.

Prepare a closure summary listing each issue, the conclusion and the supporting paragraph or calculation. Distinguish no adjustment, agreed adjustment and a conclusion still disputed. If several entities or tax registrations were involved, record the outcome separately for each one. This prevents a resolved company issue being treated as confirmation that a director's personal return or another VAT period has also been reviewed.

Reconcile adjustments to the original figures

Compare the final calculation with the submitted return and the figures discussed during the enquiry. Show each adjustment and its effect, keeping tax, interest and penalties separate. Where the final amount differs from an earlier proposal, record the reason. A closure file should explain the result rather than retaining only the final total and leaving future advisers unable to identify how it arose.

Check whether revised returns, computations or account entries are required and who is responsible for them. Do not assume that every change discussed in correspondence has already been reflected in HMRC's account. If an adjustment affects losses, opening balances or later periods, preserve the calculation and identify the follow-up review needed. The end of the enquiry can still leave practical reporting tasks to complete.

Confirm payment, repayment and remaining rights

HMRC's guidance explains that a check can result in a repayment, additional tax, interest or a penalty, depending on the findings. It also identifies the possibility of challenging a decision if you disagree. ^[1] Read the actual outcome for the applicable payment and challenge instructions rather than applying a date remembered from the opening letter or an unrelated case.

Record any amount due, reference and deadline, and reconcile payments or credits already made. If a repayment is expected, monitor it through the relevant account process instead of treating the conclusion letter as evidence that funds have arrived. If the result remains disputed, obtain advice promptly on the next step. An ongoing discussion about the wording should not be assumed to protect a formal appeal or review deadline.

Retain a complete but navigable case file

Keep the opening correspondence, information requests, submitted responses, evidence index, calculations and final outcome together. Preserve original source records and distinguish the versions actually sent from internal drafts. Add a short explanation of where important documents are stored if the full evidence is held in a separate secure archive. A future reader should be able to follow the case without accessing a former employee's email account.

Apply an appropriate retention decision that considers the tax records, future relevance and any remaining proceedings. Do not delete the evidence immediately because the correspondence appears finished. Equally, review unnecessary working copies under the organisation's data-handling arrangements. Protecting confidential information in tax correspondence explains how to manage confidentiality and access while keeping records needed for tax and legal purposes available and intact.

Carry lessons into the next reporting cycle

Identify the recordkeeping or calculation issues that caused difficulty, even where HMRC made no adjustment. Examples might include missing supplier evidence, inconsistent period labels or an unexplained reconciliation. Assign practical improvements to named people and record when they will be implemented. Avoid a broad instruction to improve compliance that does not identify the actual task or the evidence needed to show it has been completed.

For assistance reviewing the outcome and preparing the handover, see HMRC enquiry response support. Provide the final letter, calculation and any outstanding deadline. Clarify whether the work covers account reconciliation, future return adjustments or further challenge. This helps ensure that closing the correspondence does not leave the taxpayer uncertain about payment, retained records or changes needed in the next year's preparation.

Finish with a dated action list showing completed items and anything still pending. Confirm that the taxpayer, regular accountant and any specialist have the final version appropriate to their roles. When the next return is prepared, refer to that record and check whether the same facts continue, rather than assuming the enquiry outcome gives blanket approval to different transactions in later years.

Illustrative scenario

A company receives a closure letter after agreeing a correction. It reconciles the revised liability, records the scope of the outcome and updates the bookkeeping control that caused the original problem.

Preparation checklist

• Retain the written outcome
• Check scope and adjustments
• Reconcile payments
• Document control improvements