Short answers to what business owners ask us most often

Peppol is a network that invoicing and accounting software use to send each other invoices as structured data. The Belgian FPS Finance compares it to a telecom network: your software connects securely to the network, and so does your customer's or supplier's. Since 1 January 2026, that is how you send and receive invoices to and from other Belgian businesses. How Peppol e-invoicing works in NumNum

Yes. Sending and receiving via Peppol is included in every plan, including Milly Light, at no extra cost.

Yes, for invoices to other Belgian businesses. Since 1 January 2026 you send and receive those electronically, via Peppol. You invoice private individuals as before. How Peppol e-invoicing works in NumNum

No. We arrange your connection and your Peppol address.

For every customer you can see whether they can receive electronic invoices. If not, you send the invoice as before, as a PDF by email.

Yes. Purchase invoices arrive in your inbox as structured data, not as a PDF. So you don’t have to retype the supplier, amounts and VAT.

Every Peppol invoice is recorded in a sending and receiving log. You can also see for each document whether it was emailed, opened, viewed and downloaded.

Yes, NumNum is a certified Peppol Access Point provider.

Yes, you create a free account at app.numnum.be.

Paying monthly costs 20% more than paying yearly: paying yearly saves you 17%. Milly Light is only available with yearly payment. All prices exclude VAT. View pricing

Milly Light goes up to 30 invoices a year. In Milly, Billy and Trilly you invoice without limits.

Yes. Milly Light and Milly have one user, Billy two and Trilly six. An extra user costs € 2.99 per month billed yearly or € 3.99 billed monthly, in every plan, with their own login and their own permissions.

Yes, many features are available as an add-on, for example recurring invoices or the Document AI scanner. Add-ons can be cancelled monthly. In Milly Light you can only add an extra user and the Document AI scanner. Compare all features

Yes, and for free. Your accountant gets access to your account and sees everything live. From Milly upwards you also share documents in folders, and your accountant can request missing items with a deadline.

Documents go automatically to ClearFacts, Sage BOB 50, Expert/M Plus, Wings, Octopus and Billtobox. Exact Online and any other software with a digital mailbox receive your documents every day by email. Yuki and WinBooks are coming soon. All accounting integrations

Automatically, on a fixed schedule, straight into your accountant’s software or through its digital mailbox. Want to check them first? Then the software only picks up what you release.

Yes: logo, colours, font and standard texts. If you use pre-printed letterhead, you hide the logo and background on the print version.

In Dutch, French, English and German. You set the language per customer, so every document is in the right language straight away.

Yes, automatically for every invoice. With a bank connection, payments are matched automatically.

Yes, on your schedule and with your texts. Included in Billy and Trilly, as an add-on in Milly.

Yes. Your customer signs online; the signature, time and a fixed PDF are kept as proof. You turn an accepted quote into an invoice in one click. Included in Billy and Trilly, as an add-on in Milly.

Yes. For each document you can see whether it was emailed, opened, viewed and downloaded.

NumNum is Belgian invoicing software by Num•Num BV that freelancers, SMEs and the building trades use to create quotes and invoices and track their expenses, with Peppol sending and receiving in every plan. About us

Yes, both in one go from Excel. You add a new customer with just the VAT number: name, address and legal form come from the official database.

Yes. You set the prefix and the counter yourself for each document type, so your numbering follows on from your previous software.

Yes, in the knowledge base you’ll find explanations for each part. Didn’t find what you were looking for? Email us at help@numnum.be.

Yes. Your transactions come in and paid invoices are matched automatically. More about the bank connection

With the webshop integration, webshop orders become invoices; with the CRM integration you synchronise customers and documents. For anything else there is our own API with webhooks. All integrations

Yes. With the debt collection integration you pass on an unpaid invoice and track its status. All integrations

You log in with two-step verification, an audit trail shows who changed what and when, and for each employee you decide what they can see, down to hiding amounts.

Yes. NumNum is developed in Belgium.

Yes, for iOS and Android.