Compliant invoices (VeriFactu) free forever, and a copilot that answers from your real data: what you billed, the VAT you paid, who still owes you. No mandatory accountant, no lock-in, no sales calls.
No card · First invoice in 6 minutes · GDPR compliant
Next records
SHA-256 hash chain, QR and append-only registry: what the AEAT requires, already in production. Automatic submission ships in the Max plan.
What it does
Forward the client's email asking for an invoice: Billy drafts it with their data, description and VAT, ready to send. Forward supplier invoices: Billy reads them and files them as expenses. Both directions, in seconds.
When the quarter closes your expenses are already classified, VAT-verified and tagged by concept. Your accountant logs in as a guest and downloads everything in one click — without asking you.
Ask how much you billed a client this year, the VAT you paid last quarter, or who still owes you money. Answers in seconds against your real data. It only creates drafts: approving and sending stays yours.
A look inside

Income, expenses and profit for the period, what needs your attention, and quick actions to resolve it. No hunting around.

Forward supplier invoices to your Billy address: the AI reads them, checks the math and queues them ready to accept in one click.

Upload your statement in any format and every movement finds its invoice automatically. Payroll and internal transfers, detected.

Tags classify your spend and income by concept (#software, #materials…). The AI tags for you and you decide where to cut.
What Billy does for you
Upload a ZIP with past years' invoices: the AI reads them, classifies them as issued or received and brings your books up to date. No typing.
Forward supplier invoices to your Billy address (or give it to them directly). They are scanned, the math is checked, and they arrive ready to accept.
Describe it in your own words — "€300 for Marta's website, with VAT" — and the AI drafts it. Numbering, taxes and the VeriFactu record, automatic.
Upload your statement in any format (CSV, Excel, PDF…). Every movement finds its invoice and you only review what's left.
Invite them with read-only access: they download the full quarter (PDFs + summaries) and file your taxes without asking you for anything.
"How much have I invoiced this year?" "Who owes me money?" The copilot answers instantly from your real data.
How it works
Name and email, done. Verify your account from the email and choose a password.
A wizard asks for your tax details, IBAN and numbering prefixes. Everything can be changed later.
Create your first invoice or let Billy process the ones arriving by email. Invite your team or your accountant anytime.
What recent freelancers say
«I registered as a freelancer 6 months ago with no clue about invoicing. I forward receipts to my Billy mailbox, the AI turns them into expenses, and I ask the copilot how much VAT I'm carrying this quarter. Now I invoice from my phone on the train.»
Who it is for
Invoices with the right VAT and IRPF withholding, budgets that become invoices in one click, and every expense organized without data entry.
Per-project budgets, recurring billing to clients in their language (Spanish, Catalan or English) and a dashboard of what is collected and pending.
The inbox processes your suppliers’ invoices automatically, and your accountant can join as a guest with read-only access to what they need.
Testimonials
Freelancers under 12 months since registering, using Billy from day one.
«Before I did invoices in Word — 15 minutes each. With Billy I forward the client email and the invoice appears drafted. I just review and sign. Done.»
«I invoice clients in Germany and France and the intra-community VAT is detected automatically. Before I had to call my accountant every time. Literally saving me 60 € a month.»
«Tried Holded, Quipu, and Anfix. Billy is the only one that doesn't feel like a 2000s ERP. Clean UI, everything works without friction, and the copilot actually understands what I ask it.»
«The copilot asks me before each quarter what expenses I still need to upload — like a patient accountant. I came from 15 years in corporate and didn't have time to learn this. Billy explains it to me as I go.»
«I started with Billy because it was free. Within a month I'd fixed my expense spreadsheet, knew which month was going better, and the invoices were chained. Now I pay Pro because I want my accountant to see it directly.»
Case · Freelance UX design
Laura registered 6 months ago. Her first 3 months went reinventing Word templates and losing a full day per quarter. Since using Billy:
"I used to fear the quarter. With Billy it's boring — which is exactly what I want it to be."
We pick AI providers whose terms forbid using your data to train models, and we only process your documents for the tasks you trigger (extracting an invoice, drafting a proposal). Nothing else. All processors are listed in our privacy policy.
Each company lives isolated: no data is ever shared across organizations. Encrypted sessions, Argon2 password hashing, single-use invites and an audit log of every action.
The app works in Spanish, Catalan and English, and each client receives invoices and emails in their language. The VeriFactu legal legend stays in Spanish, as the tax agency requires.
Frequently asked
Yes. The Free plan works forever without a card. When you upgrade to Pro or Max, you pay by card or monthly transfer.
Yes. Every approved invoice is chained by SHA-256 hash to the previous one, with QR and append-only registry, exactly as Royal Decree 1007/2023 requires. When the obligation kicks in, your invoices will already be in the correct format from day one.
Pro includes a free read-only seat for your accountant: they download full quarters (PDFs + summaries) without asking you for anything. It is an extra seat on top of yours, at no cost. Billy is built for the freelancer or small business doing the invoicing, not for firms managing a client roster.
Yes, one click from Settings. No lock-in, no penalty.
Creating your company takes a minute. Your first invoice, two.
Create your company for free