Invoicing and accounting are connected as two links in the same chain: an invoice you send must eventually end up as a correct entry in the accounting, and the payment must be matched against the correct invoice. When the invoicing and accounting systems are connected, much of this is handled automatically, saving time and reducing errors. These are the basics you need to understand – even if you let someone else handle the actual bookkeeping.

What is the difference between invoicing and accounting?

Invoicing is all about sending your customer a bill – a document that tells them what to pay, how much and when. Accounting is about recording everything that happens financially in the company: every sale, every payment, every expense. Simply put: the invoice is the request for money, the accounting is the documentation of what actually happened. Both are required, and they go together.

What does the flow look like, step by step?

A typical flow for a sale looks like this:

  • 1. You create and send an invoiceto the customer, often with a 30-day payment period.
  • 2. The invoice is booked as a receivable- an income you have but have not yet received the money for, plus VAT that must be reported.
  • 3. The customer pays, usually to your bank account.
  • 4. The payment is matched against the invoiceso that the system knows that that particular invoice has now been paid.
  • 5. The accounting is updated- the claim disappears and the money is instead at the bank in the bookkeeping.

When the systems are connected, steps 2, 4 and 5 happen largely automatically. When they don't, someone has to sit and do them by hand.

What is meant by "the systems are connected"?

This means that your invoicing service, your accounting and often your bank exchange information with each other automatically, instead of you entering the same information in several places. Three common connections:

  • Invoice for accounting:each invoice sent automatically becomes the correct accounting entry with the correct VAT.
  • Bank to accounting:payments that come into the account are automatically retrieved and matched against the correct invoice (often called bank connection or reconciliation).
  • Online store or POS system for bookkeeping:sales that take place in your store or online store are transferred without the laying on of hands.

Many modern accounting programs have invoicing built in, so the two are already tied together. If you have separate systems, they can usually be connected with an integration.

Why is it worth connecting them?

Three clear wins:

  • Less duplication:you don't have to enter the same number in two or three systems.
  • Fewer errors:manual entry gives errors – wrong amount, wrong VAT, an invoice that is forgotten. Automation reduces it.
  • Better overview:you see in real time which invoices are unpaid and how the finances look, which makes it easier to chase payments and plan.

What does the law say about accounting?

In Sweden, according to the Accounting Act, you are obliged to record all business events and save the documents (such as invoices) for seven years. You are responsible for the bookkeeping being correct even if you hire an accounting firm. Having organized systems that link together makes this much easier – everything is automatically saved and documented correctly. If you are not sure what applies to your particular business, it is wise to check with an accounting consultant.

Do I need an e-invoice?

If you sell to the public sector (municipalities, authorities, regions), e-invoicing has been a requirement for several years. E-invoice is an invoice in a structured digital format that the recipient's system can read automatically - not a PDF in an email. Even between companies, e-invoicing is becoming increasingly common because it is faster and more frequent. If you sell to the public sector, your invoicing system therefore needs to handle e-invoices.

How should I think about choosing or connecting systems?

Start by mapping what you have today and where you are duplicating work. Do you want everything in one - invoicing and accounting in the same program - or keep special systems and connect them? Ensure that the solution supports VAT, bank connection and e-invoicing if you need it. And remember that customer data and financial figures are sensitive – the systems must be managed securely.

Want to make your systems talk to each other?

At ZORC, we help companies connect invoicing, accounting, banking and store so that information flows automatically and correctly. Whether you want to collect everything in one system or build an integration between the ones you already have, we make sure it's safe, correct and easy for you to work in. Get in touch and tell us which systems you use today, and we'll suggest how they can best fit together.