Diamontis FX brings all your invoicing together in one place: receiving your supplier invoices, issuing your customer invoices in Factur-X format, tracking and legally-compliant archiving. You're compliant within minutes, with no technical skills required.
A single platform to manage all your invoicing, with complete peace of mind.
Your supplier invoices arrive automatically in a single space, clear and ready to process.
Create your customer invoices in the regulatory electronic format. Line items and VAT are calculated automatically.
Write your quotes, let your client accept them online, then turn them into an invoice.
Your company meets the new e-invoicing obligation, with nothing to configure.
Your issued and received invoices are securely kept for the 10 years required by law.
Your transactions and payments are reported to the tax authorities, with no extra data entry.
Upload an existing PDF invoice: we extract the information and prepare it for electronic sending.
Manage several companies or an entire client portfolio from a single account.
Your data is stored in France and protected to the highest security standards.
Connect your business software or ERP to our API: deposit, statuses, client book.
Your clients view and settle their invoices from a dedicated space, with no account to create.
FEC and CSV export at any time: keep your accountant and your habits.
No IT project required: receipt and issuance are ready within minutes.
Sign up in seconds, no credit card required.
Enter your SIREN: we activate receipt and issuance.
Your supplier invoices arrive on their own, your customer invoices go out in one click.
Every invoice received or issued is sealed with a SHA-256 fingerprint and kept for 10 years in its original form.
Switching receiving platform - your PA, formerly known as a "partner dematerialisation platform" or PDP - goes through the e-invoicing directory. Diamontis FX hands you the controls from your own workspace.
You declare Diamontis FX as the receiving platform for your SIREN, with the effective date of your choice.
A directory entry you no longer need is closed from the same screen. Both openings and closings are recorded in the audit log.
An on-demand refresh compares the actual directory with what your workspace shows and flags any discrepancy before the effective date.
There is no automatic switchover wizard: closing the old address and opening the new one are two separate declarations, and you choose the dates. See the migration walkthrough in the documentation
Start for free with receipt. Upgrade to issuance and automation whenever you need.
Receiving your supplier invoices is free, with no time limit. Factur-X issuance and e-reporting are included from the first paid plan onwards, monthly with no commitment or yearly with two months free.
Receive your invoices, free forever.
1 GB of storage included per company
Issue invoices and stay on top of VAT: for active small and medium businesses.
10 GB of storage included per company
Accounting automation and volume for structured SMEs.
75 GB of storage included per company
Introductory price until 31 December 2026. From 1 January 2027, the Pro plan moves to €12 excl. VAT per month. Existing subscriptions will follow at their renewal date.
You equip your own clients: the API, the volume and multi-company.
25 GB of storage included per company
For accounting firms: multi-client portfolio, volume-based billing.
100 GB of storage included per company
Multi-entity, high volumes, full e-reporting, ERP connectors.
Up to 1 TB of storage included
Prices excl. VAT. Invoice receipt remains free and unlimited, regardless of the plan. Monthly: no commitment, change or cancel anytime. Yearly: twelve-month commitment (two months free), immediate upgrade, downgrade at renewal. Beyond the included plan (issuing, OCR), a rechargeable wallet (from EUR 5) or automatic usage-based billing take over - never a surprise block without a way out.
Yes, with no volume or time limit. Receiving invoices is mandatory for all companies from September 1, 2026: we make it accessible to everyone.
Upgrades are possible at any time, with immediate effect. On a monthly plan, downgrades are also possible at any time with no commitment; on a yearly plan, they take effect at the end of the current twelve-month period.
The Business plan covers multi-company and accounting firm access with a client portfolio and context switching. Contact us for very high volumes.
Secure card payment via Stripe. No card is required for the free receipt plan.
Join the companies that already have a head start on e-invoicing.
Activate my compliance