Organising Receipts Invoices and Source Records

Create a filing and reference system that connects each transaction to useful evidence.

Part 2 of 10 | Bookkeeping for Small Businesses

Learning goals

You will distinguish invoices, receipts and other source records, organise a small document bundle and maintain a clear correction trail. You will create a practice document checklist without presenting it as a legally complete tax invoice template.

Before you begin

Allow about an hour. Use fictional paper slips or a private practice folder. Do not upload real identity documents, bank statements or customer contact lists to a group exercise. Keep blank spaces for private details. You are designing a record system, not issuing real invoices or replacing the forms your business must use.

Understand the document types

An invoice describes a charge for goods or services and the amount due. It may be unpaid, partly paid or fully paid. A receipt acknowledges payment. A delivery note records a handover of goods, while a quotation is a proposed price. One document can contain several functions, but its heading alone does not prove that all those events happened.

A bank or wallet entry shows movement in an account. It does not necessarily describe the purchase, establish who owns it or prove that it was a business expense. Link it to the invoice or other explanation. An invoice and its later payment record usually relate to one purchase, not two separate expenses.

Assign references that remain useful

Give internal documents a simple sequence, such as Sale 001 or Expense 001. Include the year or another period label if it prevents confusion. Keep the supplier's original invoice number as well as your own filing reference. Do not change a supplier's number to fit your system; record both and connect them.

Use the reference in the cashbook, sales list or unpaid-account list. This allows someone reviewing an entry to find the evidence quickly. Keep cancelled documents with a clear cancelled note rather than deleting them and reusing the number. A continuous sequence with explained gaps is easier to review than a sequence whose history has disappeared.

Record the useful facts

A practical internal checklist includes the date, parties, description, quantity where relevant, amount, payment status and related references. Add the purpose when the business reason would otherwise be unclear. A note saying GMD 200 paid is less informative than a note identifying which delivery or repair the payment covered.

GRA's current Taxpayer Charter addresses complete transaction records and the issue and request of receipts and invoices. The checklist in this lesson supports organisation; it is not a complete specification of legally required invoice fields. In particular, do not add a tax label or VAT charge simply because a sample from another business includes one. Confirm the applicable requirements for your own business.

Handle missing evidence honestly

If a receipt is missing, request a replacement or other available confirmation. Meanwhile make an internal note of the date, amount, payee, purpose, payment method and reason the original is unavailable. Mark it as an internal note awaiting evidence. Do not create a document that falsely appears to have been issued by the supplier.

An internal explanation may help management understand a transaction, but it does not guarantee tax deductibility or satisfy every legal evidence requirement. Keep the issue visible for review. If a payment was personal or unauthorised, describe it accurately instead of inventing a business purpose to make the file look complete.

File and protect the records

Organise papers by period and category, with a separate place for items awaiting action. For digital records, use names such as PracticeMonth_Expense001_Delivery. A readable photograph can help preserve fading paper, but check that the whole document is visible and legible. Keep originals where required; do not assume a phone image always replaces them legally.

Limit access to people who need the records and maintain a protected backup separate from the main copy. Avoid storing the only copy on a device that may be lost. Keep payment credentials outside bookkeeping files. A monthly folder is useful only if its contents can actually be opened and matched to the books.

Correct without erasing the history

For a paper entry, make a clear correction that leaves the original readable, then date or initial the change. In a digital system, use its supported correction or revision process and retain the explanation. A voided sale, return or revised invoice should refer back to the original. Obtain the proper correction document where applicable.

Do not silently change a previously reported period to hide a mistake. Record when you discovered it, the evidence and the action taken. Later tax or financial reporting may require a particular correction process. Clear internal history makes that professional review easier.

Guided exercise

1. Create six fictional slips: an unpaid invoice, a receipt, a delivery note, a quotation, an account payment entry and an internal missing-receipt note.

2. Explain what each slip proves and what it does not prove. Pair the invoice with its later payment where appropriate.

3. Assign internal references and draw a filing index showing where each item belongs. Mark the quotation as a proposal rather than an expense.

4. Practise correcting a GMD 240 entry that should have been GMD 420, leaving a visible explanation.

5. Write a backup and access routine and one question about the actual invoice requirements you would take to GRA or an adviser.

Knowledge check

1. Does an invoice necessarily prove payment?

2. Should a missing receipt be replaced with a fabricated supplier document?

3. Does saving a photograph automatically permit destruction of the original?

Answer guide

1. No. Payment status and evidence must be checked.

2. No. Request evidence and retain a clearly labelled internal explanation meanwhile.

3. No. Confirm the applicable record-format and retention requirements.

Completion standard

Correctly identify all six document types, link the purchase and payment without duplication and demonstrate a traceable correction. Your filing index and backup plan must contain no real credentials or customer data.

Sources and verification notes

GRA Taxpayer Charter. Checked 15 September 2026. Current download checked; sections 4.6 and 4.7 address records and transaction documents. Not exhaustive legislation.