Invoice digitisation: from paper to the books

"Invoice digitisation" sounds like a single project, but in an accounting team it is three different jobs: getting paper out of the drawers, making sure nobody has to retype what is already printed on the invoice, and being able to find any document a year later in under a minute. Most companies do the first and stop there – they end up with a folder of scanned PDFs, while data entry stays exactly as manual as before.

A scanned invoice is not a digital invoice

A scanned invoice is a picture. You can store it, forward it and attach it, but the accountant still has to read the supplier, the number, the dates, the amounts and the VAT, and key all of it into the accounting system. A digital invoice starts when that picture turns into data: the supplier with its company and VAT codes, the line items, the amounts per VAT rate – and a record your accounting system accepts with the right general-ledger account, VAT code and dimensions.

That difference decides whether digitisation actually saves time, or simply swaps paper in a drawer for files in a folder.

Where your invoices come from today

Before digitising anything, it is worth counting the routes by which invoices reach the company today. There are usually four:

• •PDFs by email – how most suppliers send them, but scattered across several people's inboxes
• •Paper delivered with the goods – at the warehouse or on site, far from the accounting team
• •Employees' receipts and invoices – fuel, small purchases, business trips, often sitting in a pocket until month end
• •Supplier self-service portals – someone has to log in and download the invoice, and every month someone forgets

Each route needs its own fix, but the goal is the same: all of them should end in one place. As long as invoices travel four routes to four places, no amount of clever recognition will save you from the question "have we already booked this one?"

One place for every document

The simplest step is a dedicated email address for invoices. Suppliers send to it, and employees forward to it anything that landed with them. When a paper invoice or receipt arrives, the employee photographs it on their phone the same day instead of handing it in at month end. The accounting team then works from one list rather than collecting documents from several sources.

A single entry point has a side benefit too. The same invoice sometimes arrives twice – once by email and once on paper with the delivery. When both land in the same list, the duplicate can be caught before it reaches the books, rather than after the supplier has been paid twice.

What to do with the paper originals

This is usually the first question accountants ask, and the answer comes from your document policy, not from any software. In Lithuania, paper documents may be kept as digital copies, but the company needs an approved digitisation procedure for that: who scans, how you make sure the copy matches the original, and when the original may be destroyed. Until such a procedure exists, a scanned invoice is a convenient working copy, not a replacement for the original.

That is why many companies start with working copies: the paper is filed as before, but nobody retypes it by hand and nobody goes hunting for it in a drawer. The retention policy for originals can be sorted out later, as a separate piece of work with your head of accounting or your lawyer.

What to prepare before you start

• •A list of where invoices arrive today and who receives them
• •The suppliers who still send paper – often a simple request to switch to email is enough
• •Which employees have expense receipts, and how they hand them in now
• •One real month of last month's documents – including a credit note, a foreign supplier and at least one poor-quality copy
• •The general-ledger accounts, VAT codes and dimensions your accounting system actually uses

The last point matters more than it looks. A digital invoice should end up as the record your own accountant would have entered, not as a generic one somebody has to correct later. A tool that cannot produce your record, in your accounting system's vocabulary, only moves the retyping one step down the line.

How to tell it is working

Not by how many files appeared in the system. There are three good signs: at month end there are no un-submitted receipts left in drawers; the accountant reviews prepared records instead of typing them; and the question "where is that invoice?" is answered with a search rather than a phone call to a colleague. If at least two of the three are true after the first month, your digitisation is doing its job.

If none of them are true, the problem is rarely the scanner. It is usually that documents still arrive by too many routes, or that the records produced are not the ones your accounting system expects – both of which are worth fixing before adding anything else.