💡 At a glance: "+" button → Create invoice → select a client → check your details → add your items → save & send
To generate a valid invoice, Accountable needs a few details from you first: your IBAN, your address and your VAT number. Without these, your invoice won't be valid, and worse, you won't get paid 😉
So, make sure to fill these in under Settings > Personal details.
Now, let's create your invoice step-by-step!
This is where all your sales invoices and income appear.
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You can also reach this shortcut from the app's home screen by tapping the "+" button.
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Pick an existing client from your list, or create a new one by adding their name, address, VAT number, etc.
Invoice number: you can either let the app number it automatically, or enter it manually once in the format you prefer. After that, it increments automatically 🙂
💡 Our tip: update your numbering at the start of each year (e.g. 2026-001, 2027-001) to keep things clear.
Issue date and due date
Service date, if your service covers a specific period → you can check our article How to create an invoice with a service period?
Check that all your personal details are shown correctly. Otherwise, tap the section, fill in the right information, and don't forget to save the changes:
Your first name and last name
Your company name (if applicable)
Postal address
VAT number
Tap 'Add item'
Select either an item registered previously in your price list, or 'Add a new item':
Fill in the item name
Description (optional)
Category (sales of goods or services, or any other income source like real estate rental, copyright revenue, donation,…)
Quantity
Unit price and VAT rate (pick the one that matches your sector)
Tap 'Add item' and repeat for as many items as you need
💡 Our tip: save an item to your Products & Services list to reuse it on future invoices without retyping it 😉
In the sections below, you can add or modify:
Your banking information (IBAN, BIC)
Your email address and/or phone number
Notes & comments (optional)
Terms & conditions (optional - if you add any, they'll be automatically saved for your future invoices)
💡 Our tip: these fields are pulled straight from your personal settings. Double-check your IBAN, email and phone number under Settings > Personal details so they're correct on every invoice, not just this one.
With the paid plan, you can also adjust:
The invoice language (English, French, Dutch)
A QR code for payment
A structured communication
The billing currency
The look of your invoice: your logo, your colours, the template and the font
The invoice status
💡 The paid plan also unlocks quotes and recurring invoices, handy if you regularly bill the same services. |
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Once your invoice is ready, or if you want to save it for later, tap 'Continue' and then choose:
'Save & prepare to send' to send it directly to your client via Accountable
or 'Save & download PDF' to save it to your phone
or 'Save & quit' if you want to save it for later and make changes before sending
If you chose to send your invoice directly via Accountable:
Don't forget to switch on the green 'Send the invoice via Peppol' toggle - this is what actually sends your invoice through the Peppol network → ⚠️ An error message might appear if you're not registered on Peppol yet, and/or if your client isn't registered either → in that case, you won't be able to send your invoice via Peppol.
You can also edit the email message generated automatically by the AI
Make sure to type your client's email address correctly
💡 Our tip: sending a test invoice to yourself first is a great way to check everything looks right before sending it to a real client.
Every paid plan also unlocks the web app (web.accountable.eu), which the Free plan doesn't include. Everything in this article works the same way on web, but this article is written for the mobile app specifically. If you'd rather see the full paid experience across both, check our Guideline for Accountable users.
Want to get even more out of Accountable? Join our free weekly live webinar to see exactly how to make the most of the app for your own situation, hosted live by one of our tax coaches, with time for your questions.
Not sure which plan you need? Our plan comparison article breaks down pricing and who each plan is for, or explore plans & pricing directly.
And for any questions you may have, we're here to help in the chat or by email at support@accountable.eu 😊
Author - Valesca Wilms
As content marketing lead at Accountable Belgium, Valesca writes about freelancing, self-employment, and taxes based on her own experience as a freelancer.
Who is Valesca ?Thank you for your feedback!
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Read moreThey always answer right away to any question I have, they provide clear answers, and they are very patient even when I struggle to understand. They try to explain in different ways. They are very helpful, responsive and friendly.
Chiara Marradi
01/05/2026
Everything was great! All my questions were answered quickly and in a friendly manner.
Wenzeslawa Wegener
04/05/2026
In the world where everyone seems to be out to get small entrepreneurs and overwhelm them with new rules, more taxes and reporting obligations, Accountable often feels like the one steady partner that actually wants you to succeed, providing quick, clear and personalised support. Thank you!
Janina Arsenjeva
10/04/2026
This is an amazing application with great support on issues. In short as in day I am addicted to it (in a positive way). I myself is from IT project management and the way they have captured the user requirement, it’s phenomenal.
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01/12/2024
UI is great. Feature packed and very easy to use. The team at Accountable were VERY quick to respond and their team of technicians soon had a fix in place. Very happy with the level of service so far. Thumbs up from me!
Dean Osborne
14/06/2023
This program is a lifesaver, and it is always improving. Plus, it has an AI chat feature that is actually useful.
Jeffrey Humble
14/01/2026
The coaching session on tax management was excellent, good material, excellent explanations and very insightful. Combined with the AI I never feel alone with Accountable.
Sergio Barbarino
23/04/2026
The availability of your team to help and guide people to understand their finances better is what really makes Accountable valuable. While the AI is able to give answers to most basic questions, specific scenarios need counsel from a human which your team performs beautifully.
Sofiya Bogdan Neves
18/04/2026
Fast and careful answers from Alina. Top service. Thank you.
Anonymous
15/04/2023
They always answer for questions wherever is via direct e-mail or through app. If they can’t answer fully they will forward you to the right place. Documents were always prepared well and ready to send further to government. Everything is intuitive in the app and easy to sort out even for someone completely green in this field.
Anonymous
22/03/2026
