💡 At a glance: "+" button → Create invoice → select a client → check your details → add your items → save & send
Before you start
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!
Step 1: Go to the "Revenues" tab, then tap the "+" button and select "Create invoice"
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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Step 2: Select or create your client
Pick an existing client from your list, or create a new one by adding their name, address, VAT number, etc.
Step 3: Check the invoice number and dates
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?
Step 4: Double-check your personal details
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
Step 5: Add your items
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 😉
Step 6: Add your banking and contact information
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.
Step 7 (optional): Customise your invoice settings and style
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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Step 8: Save and/or send your invoice
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.
🖥️ What about the web version?
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 😊