Getting started with Declair

Welcome to Declair. This guide takes you from zero to your first paid invoice. Allow 15–20 minutes.

Step 1 — Create an account

1. Go to declair.app/register and create a free account.
2. Confirm your email address via the link in your inbox.
3. Log in and complete the onboarding.

You get 14 days free access to all Professional features. No credit card required.

Step 2 — Fill in company details

1. Go to Settings → Company details.
2. Enter: business name, address, Chamber of Commerce number, VAT number, and IBAN.
3. Upload your logo (optional but professional).
4. Set your invoice numbering (e.g. 2026-001).

Without complete company details, you can't send a legally compliant invoice.

Step 3 — First customer and invoice

1. Go to Customers → New customer and add your first customer.
2. Go to Invoices → New invoice.
3. Select the customer, add a line item, and send the invoice.

Detailed guide: How do I create my first invoice?

Step 4 — Receive payments

1. Connect Mollie via Settings → Payments.
2. Send an invoice with an iDEAL payment link.
3. When the customer pays, the status automatically becomes Paid.

Detailed guide: Set up an iDEAL payment link

What's next?

Need help?

Email us at [email protected] or use the contact form. We usually respond within one business day.