Automating invoicing means incoming invoices are read and posted without manual retyping, outgoing invoices are issued automatically from the quote or order data, and payment reminders go out on their own, on a schedule set in advance. The result is less manual work, fewer errors and receivables that are collected faster. In this article we take the three links in the chain one by one — and show how to implement them without replacing your accounting software.

Why is invoicing first on the list?

Invoicing is a repetitive, strictly rule-based process with high volume — the ideal candidate for automation. The rules are clear, the required fields are the same every month, the data is structured, and every mistake costs money: a wrong amount, a missed invoice, a forgotten reminder, VAT applied incorrectly. It is no accident that it tops our ranking in "The 5 processes to automate first".

The benefit is felt on both sides of the desk: accounting saves hours of retyping and cross-checking, and the owner sees in real time who owes how much and since when. At dozens or hundreds of invoices a month, that adds up to dozens of hours of work returned — every single month.

How are incoming invoices read automatically?

An incoming invoice arrives by email as a PDF, on paper, or as a photo from the driver's phone. The system reads it: it recognises the supplier, the number, the date, the description, the amounts and the VAT, checks the data against the order or the contract, and hands the ready entry over to the accounting software. Nobody retypes anything — a person only reviews and confirms.

One important detail: automation takes over the routine flow, while the exceptions stay with people. An illegible document, a mismatch with the order value, an unknown supplier — all of these go into a queue for manual review instead of slipping through unnoticed. How this link fits into the bigger accounting picture is covered separately in "Automating accounting processes".

Automatic issuing: the invoice without retyping

An outgoing invoice almost never contains new information — everything in it already exists in the quote, the order or the contract. When that data is structured, the system issues the invoice on its own: it fills in the details, numbers it, sends it to the client and records it in the books, without anyone opening a Word template and copying rows from a spreadsheet.

For subscriptions and recurring deliveries, invoices go out on schedule — on the first of the month, for the exact amount, to the right recipient. And if your process starts at the enquiry stage, it is worth seeing how automated quotes work — from enquiry to contract in hours: when the quote is structured from the start, the invoice built from it is a single click.

The reminders that actually collect

An issued invoice is not yet collected money. In most companies a reminder depends on someone remembering, checking the bank statement and writing an awkward email — so it gets postponed, and the overdues grow. An automated sequence solves exactly this: a few days before the due date the client receives a polite reminder with a copy of the invoice; on the due date, a short confirmation of the expected payment; after it, messages that escalate in tone until a persistent overdue lands with a person.

The key point is that the system watches incoming bank payments and stops the moment the money arrives — no loyal client ever gets a reminder for an invoice they have already paid. We have written up a working sequence step by step in "Automatic payment reminders: fewer overdues, no awkward calls".

How the implementation runs — step by step

1. Mapping. Describe how invoices move today: where they come from, who handles them, where they slow down and where they get lost.

2. Scope. Pick the first link — usually the one with the highest volume or the most errors. Nothing gets automated all at once.

3. Connecting. Email, the accounting program, the bank and the order system are linked together; the rules and the exceptions are defined.

4. Parallel run. The automation works under supervision until the team is confident its results match the manual processing.

5. Go-live and measurement. The process moves fully to the system, and the time saved and the overdues are tracked with concrete metrics. This is exactly the model behind our automation service — from the analysis to the support after go-live.

How much does it cost and when does it pay off?

The price depends on the invoice volume, the number of systems to connect and how tidy the process is today — we have laid out a detailed framework in "How much does business process automation cost". As a benchmark from our own practice: our clients save 22% on average on the costs of the automated processes, and the typical return on investment comes within 3–6 months.

With invoicing there is a second, harder-to-measure effect: receivables collected on time mean a predictable cash flow — and that is the difference between calm planning and constant firefighting.

What to prepare before you start

The implementation goes smoothly when a few things are in order beforehand. Here is a short list to run through before you sit down with the provider:

A tidy list of counterparties. A single supplier entered in three different ways confuses the reconciliation. Clean up the duplicate records and make sure the company number and the VAT details are filled in correctly.

Clear approval rules. Decide in advance which amount threshold requires a second signature and who approves when someone is away. These rules become the logic by which the system routes every invoice.

An up-to-date payment schedule. The standard contract terms (for example 14 or 30 days), together with the exceptions for key clients, determine when the reminders go out and when a case is escalated.

Access to the bank statement. To stop the reminders once a payment arrives, the system has to see the movements on the account — usually through a bank integration or a regular export.

None of this is a precondition that should stop you — it simply shortens the parallel run. If some of your data still lives on paper or in scattered spreadsheets, it is worth going through a digital document workflow first, so that the invoices start from an organised foundation.

Frequently asked questions