Company tax payment reference numbers

A Corporation Tax payment reference identifies the relevant payment and accounting period for HMRC. It is not interchangeable with the company's registration number or its ten-digit UTR. Check the current reference in the appropriate HMRC record before instructing a payment.

Keep references for Corporation Tax, VAT, PAYE and other taxes separate. Where accounts cover more than one tax period, identify the correct reference and amount for each. Verify any unexpected instruction through an official route rather than trusting an unsolicited email or text.

Distinguish the identifiers in the company file

The company number identifies the registered entity, the UTR identifies its tax record and the Corporation Tax payment reference directs a payment to the relevant period. Keep them separately labelled. A person processing bank payments should not have to guess which number in an accountant's email is intended for the payment instruction.

HMRC's bank-transfer guidance explains the payment reference and official payment details. ^[1] Obtain the reference from the appropriate current HMRC record rather than constructing it from memory. Avoid publishing or circulating a real company's reference unnecessarily. Provide access only to the people who need it for the payment and retain evidence in the controlled finance record.

Check the period before reusing a saved reference

A saved bank beneficiary can preserve last year's reference even when the bank account details remain correct. Review both fields before every payment. Identify the accounting period, amount and due date in the approval record. This simple check helps prevent a payment reaching HMRC but being assigned to a different period than the one the company intended to settle.

Where statutory accounts cover more than one tax period, prepare separate payment instructions as appropriate. Use Corporation Tax accounting periods to establish the period map and Paying Corporation Tax: preparation checklist for the wider payment plan. Do not combine amounts without checking the required references and allocation. A single total on the accounts summary may hide several distinct tax tasks.

Verify instructions through a trusted route

Treat an unexpected request to change payment details or references as something to verify independently. Use official HMRC information and known account access, not a link or telephone number supplied only in the suspicious message. Record who checked the instruction and what source was used. Urgency should not remove the normal verification step.

Keep PAYE, VAT, Self Assessment and Corporation Tax instructions separate. A business owner may pay several taxes around the same time, and copying the wrong reference can create an allocation problem even where the amount is correct. Use clear payment descriptions internally and review the recipient tax type before bank authorisation.

Preserve evidence and investigate allocation problems

Save the payment instruction, bank confirmation and relevant account check. If a payment is missing from the intended period after normal processing, collect the date, amount, reference used and bank evidence before contacting HMRC through the official route. Do not alter the historic payment record to show the reference that should have been used; retain the actual evidence and record the correction process separately.

Avoid immediately paying again without understanding the first transfer's status, as that can create an overpayment. Equally, do not assume HMRC will automatically move funds to the intended period without follow-up. Keep the issue open until the account position is understood and the company's ledger reflects the outcome.

For Corporation Tax record review, provide the relevant HMRC period information and payment evidence securely, identifying any mismatch clearly. Ask for help distinguishing an unpaid liability from an allocation or processing issue. Improve the internal payment checklist where the error arose, such as a saved reference or ambiguous approval email. Reliable references are a small administrative detail with a direct effect on whether the company's tax payment is recognised where it is needed.

Distinguish a saved payee from a saved reference

A bank's saved HMRC payee may retain a reference used for an earlier accounting period. Check what the banking screen will actually transmit for the new payment, including any automatically populated field. The correct recipient account does not establish that the payment will be allocated to the intended liability.

Use the relevant official payment information and retain the reference in the payment record with the period it identifies. If several company periods are being paid together, obtain clear instructions on the appropriate allocation rather than improvising a combined description. After payment, compare the bank evidence and HMRC account position when available. Investigate an apparent missing payment using the amount, date and transmitted reference, keeping the original evidence intact while the allocation is resolved.

Illustrative scenario

A company pays the correct amount using a reference copied from the previous year's working papers. The money may not appear against the intended period. The finance team investigates allocation with payment evidence and improves its checklist so the current reference is checked before every instruction.

Preparation checklist

• Identify the exact tax and accounting period.
• Obtain the current reference from a trusted HMRC source.
• Check the amount and reference before bank approval.
• Keep confirmation and investigate unexpected account balances.