Invoicing you don't have to learn.

Quotes, invoices and expenses with no bookkeeping knowledge needed. Built for SMEs and the building trades, and your accountant gets free, live access.

Try for free Request a demo

Customers: 15,000+
Accountants: 100+

For people who'd rather do the work than the paperwork.

Pick your situation and see what NumNum does for you.

Self-employed

Invoices and quotes, no bookkeeping knowledge needed.

I'm self-employed

SME

Your whole team in one account, each with their own permissions.

I run an SME

Construction and trades

From quote to job costing, job by job.

I work in construction

Accountant

All your clients in one place, live.

I'm an accountant

How it works

From quote to bookkeeping without retyping a thing.

From the first price request to your accountant. Each step follows from the last.

Quote
Your customer signs online.
A quote in your own branding that works out the square metres and the price for you. Your customer approves with a signature.
More about quotes
02Invoice
One click, and the quote is an invoice.
Sent via Peppol, straight into your customer's accounting software. You see every step.
More about invoices and Peppol
Invoice 2026-041
Total€1,815.00
- Created from quote
- Sent via Peppol
- Delivered to Peeters Building
- Opened by the customer
Paid
Payment in, invoice matched.
Through your bank connection, NumNum recognises the transfer and marks the invoice as paid.
More about the bank connection
Bookkeeping
Your accountant sees it all, live.
Your invoices go to your accountant's software automatically. What gets sent depends on the package.

What customers say.

Real business owners, in their own words.

“I work with NumNum every day, it's 'dead simple'. You don't need any prior knowledge of accounting at all. We're also active abroad and I switch easily between our NumNum accounts, without having to log in again every time.”
Karen SoenensGenico
“I've been working with NumNum for years and recommend it to my clients. Making quotes and invoices is super quick, and in the dashboard I can see straight away where I stand on revenue. To measure is to know!”
Els VansteenkisteSomething Els
“I had already tried 2 other invoicing programs when I came across NumNum. With NumNum I can do more, and I pay less. It's very useful that you can see whether the customer has opened your invoice.”
Azzedine ChrouabiA-Z Technics
“On my accountant's advice I switched to NumNum. Since then I spend much less time on admin. Turning a quote into an invoice, managing projects: it's all lightning fast and super easy.”
Dominique VuylstekerAll-Renova
“I used to do my invoicing in Word and Excel, a real hassle. I tried out various tools and ended up sticking with NumNum. Clear and easy to use. And with their support you actually get a human on the line.”
Inge Van PuymbroekCrew Consult

Read all reviews

Accounting integration

Your paperwork reaches your accountant on its own.

Your invoices go to your accountant's software automatically. There's nothing to export or email.

Sent through automaticallyWhat gets sent depends on the package: your sales invoices always, and your purchases too for most packages.
Your accountant sees it liveFree access to your account. If a document is missing, your accountant asks for it in the app and you reply with one upload.
Works with the packages accountants useExact Online, Octopus, ClearFacts, Wings, Sage, Wolters Kluwer and more. Yuki and WinBooks are coming soon.

Material suppliers

Your wholesaler's prices, straight into your quote.

Connect your wholesaler, such as Facq, Cebeo, Rexel, Van Marcke or Würth: search their catalogue and pull your basket into the app. Your quotes get the latest prices and you retype nothing.

Always the latest prices and items in your quote
Your basket in your order in one click
Margin per project visible right away

Your first invoice, sent today.

Your account is free and you don't need any bookkeeping knowledge. Invite your accountant too, their access is free. Prefer a guided tour first? Request a demo.

Try for free Request a demo

Invoicing you don't have to learn.