Receive and issue your electronic invoices, effortlessly.
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. Diamontis FX is a Dematerialisation Operator (OD): your invoices travel through SuperPDP, an Approved Platform registered with the French tax authority.
- Free receipt
- Unlimited quotes
- 5 free issued invoices per month
- No commitment
Receive and issue, in one place
A single workspace to manage all your invoicing, with complete peace of mind.
Centralized receipt
Your supplier invoices arrive automatically in a single space, clear and ready to process.
Factur-X issuance
Create your customer invoices in the regulatory electronic format. Line items and VAT are calculated automatically.
Quotes and sales management
Write your quotes, let your client accept them online, then turn them into an invoice.
2026 compliance
Your company meets the new e-invoicing obligation, with nothing to configure.
Read the guideLegally-compliant archiving
Your received invoices are sealed with their fingerprint, timestamped by a time-stamping authority (RFC 3161) and kept for 10 years with evidential value; those you issue are kept by the approved platform that transmits them.
Built-in e-reporting
Your sales to consumers and abroad are reported as soon as they are issued, your payments as soon as you record them. Purchases from abroad are reported from the "E-reporting" screen.
Read the guidePDF import
Upload an existing PDF invoice: we extract the information and prepare it for electronic sending.
Multi-company and accountant
Up to three companies on one account with the Business plan. On every plan, you invite your accountant: they find your file in their portfolio.
Read the guideData hosted in France
Your data is stored in France and protected to the highest security standards.
API for your tools
Connect your business software or ERP to our API: deposit, statuses, client book.
Customer portal
Your clients view and settle their invoices from a dedicated space, with no account to create. Card payment: all-in fees from 2.1% + €0.25 (1.8% above €250 excl. VAT).
Compliant FEC
Entries numbered and frozen at the first export, fiscal years and closing, VAT on services due on payment, foreign-currency invoices at the ECB rate. On every plan.
Smart Comptable
From the Pro plan: a dashboard by account and a review of your invoices, one by one. On Business, Smart Analyse: AI suggests an account, you validate.
Automatic reminders
Every morning, an overdue invoice gets the reminder that matches its delay, from your templates in French and English.
Checks on received invoices
VAT discrepancies, suspected duplicates and IBAN changes are flagged when the invoice arrives, before any approval.
App and notifications
Install Diamontis FX on your computer or phone, and get a notification when an invoice arrives.
Up and running the same day
No IT project required: receipt and issuance are ready within minutes.
Create your account
Sign up in seconds, no credit card required.
Add your company
Enter your SIREN: we activate receipt and issuance.
Receive and send
Your supplier invoices arrive on their own, your customer invoices go out in one click.
Your invoices are archived
Every invoice received is sealed with a SHA-256 fingerprint, timestamped by a time-stamping authority (RFC 3161) and kept for 10 years in its original form; invoices issued are kept by the approved platform.
Coming from another e-invoicing solution?
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.
Open a receiving address
From Diamontis FX, you declare its partner Approved Platform as the receiving platform for your SIREN, with the effective date of your choice.
Close an existing address
A directory entry you no longer need is closed from the same screen. Both openings and closings are recorded in the audit log.
Re-read the directory
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
Pricing: a simple offer, no surprises
Start for free with receipt. Upgrade to issuance and automation whenever you need.
Receiving your supplier invoices is free, with no time limit. Five issued invoices per month are free; beyond that, Factur-X issuance and e-reporting are included from the first paid plan onwards, monthly with no commitment or yearly with two months free.
Reception
Receive your invoices, free forever.
1 GB of storage included per company
- Unlimited receipt of electronic invoices (Factur-X, UBL, CII)
- Browsing, search, VAT check and duplicate detection
- Reports: indicators, monthly trend, CSV and PDF exports
- Legally probative 10-year archiving of received invoices (sealed, RFC 3161 timestamp)
- Basic document management: folders, tags, attachments
- 1 company, 2 users
- Receiving compliance with the obligation in force since 09/01/2026
- Unlimited quotes, client portal and conversion to invoice
- Issuing: 5 free invoices per month, then €0.20 excl. VAT per invoice, no subscription
- Compliant FEC export: numbered and frozen entries, fiscal years and closing
- Access for your accountant, by invitation
Pro
Issue invoices and stay on top of VAT: for active small and medium businesses.
10 GB of storage included per company
- Everything in the Reception plan
- Factur-X / EN16931 issuance (50 invoices/month)
- Chart of accounts, allocation rules and split by line
- B2C e-reporting and payment reporting
- OCR-assisted PDF import (25/month)
- FEC built on your chart of accounts and your allocations
- Smart Comptable: dashboard by account, invoice-by-invoice review, reclassification entry
- 1 company, 2 users
- Beyond the plan: EUR 0.10 excl. VAT/invoice, EUR 0.05 excl. VAT/OCR page (rechargeable credit)
- Unlimited quotes, client portal and conversion to invoice
Business
AI suggests your accounts, you validate: volume and multi-company for structured SMEs.
75 GB of storage included per company
- Everything in the Pro plan
- 300 invoices/month issuance per company
- Smart Analyse: AI suggests an account for your invoices, you validate (200 invoices per month and per company)
- AI second reading of allocations, account or category suggestions
- Configurable validation workflow Coming soon
- Beyond 200 analysed invoices per month: wallet debit based on actual usage
- 3 companies, 6 users
- Priority support: reply targeted within one business day
- Beyond the plan: EUR 0.10 excl. VAT/invoice, EUR 0.05 excl. VAT/OCR page (rechargeable credit)
- Unlimited quotes, client portal and conversion to invoice
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.
Reseller
You equip your own clients: the API, the volume and multi-company.
25 GB of storage included per company
- Everything in Business
- Up to 200 companies and 20 users
- 500 invoices issued per month, per connected company
- Full API: deposit, lifecycle, client book, e-reporting, webhooks
- Dry-run validation: test a document before depositing it
- Factur-X assembly from your own PDFs
- Beyond the plan: €0.05 excl. VAT per invoice, €0.03 per OCR page
- Onboarding support
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. Card payment of invoices: all-in fees from 2.1% + €0.25 (1.8% above €250 excl. VAT), Stripe's standard European card fees and the Diamontis FX fee included.
Frequently asked questions about pricing
Is receipt really free?
Yes, with no volume or time limit. Receiving invoices has been mandatory for all companies since September 1, 2026: we make it accessible to everyone.
Can I change plans?
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.
I manage several companies, or an accounting firm
The Business plan brings up to three companies together on one account. An accounting firm does not need this plan: on every plan, Free included, each company invites its accountant, who finds their files in a portfolio and switches from one to another. Contact us for very high volumes.
How does payment work?
Secure card payment via Stripe. No card is required for the free receipt plan.
Reform guides
Timetable, obligations, e-reporting, accounting firms: what the reform changes, explained without jargon.
E-invoicing 2026: the guide
What the 2026 French mandate requires: receiving from 1 September 2026, issuing depending on your size, accepted formats and penalties incurred.
Read the guideE-reporting: the guide
E-reporting complements e-invoicing: consumer sales, international operations and payments received. Who files, what, and by which deadline.
Read the guideAccountants: the guide
Manage several companies from one account, export the FEC, secure your clients' archiving and prepare their issuing in September 2027.
Read the guideReady for issuing in 2027?
Join the companies that already have a head start on e-invoicing.
Activate my compliance