
All your invoicing
without touching new software.
Naia is the assistant that handles your business invoicing from WhatsApp. Any day. At any hour.
Naia
en linea
Invoicing isn't hard.
Finding the time to do it is.
Today you've been at the warehouse, visited a client, or met with a supplier. You get to the end of the day and the last thing you want is to search for invoices among messages, match numbers, fill in details and register them in software. You didn't start a business to spend your time on this.
Naia handles it for you. Forward an invoice to its chat with a couple of taps, let your suppliers send emails to it, or give it a quick WhatsApp instruction. Minimal mental load so you can focus on your business while admin takes care of itself.
No software to learn.
Tell it what you need. Naia understands what to do.
Understands intent
Naia interprets the message, document, and context. It knows whether you want to register a received invoice, issue a new one, modify a draft, or prepare a report.
Executes and verifies
Registers the invoice, links the supplier, applies the correct tax treatment, and stores the document. The system validates every data point before confirming.
Asks permission when it matters
For sensitive actions — issuing, voiding, sending to third parties — Naia doesn't improvise. It asks for your confirmation. Everything is logged and reviewable.
Everything your invoicing needs.
Without learning anything new.

Any channel. Even without you in the conversation.
WhatsApp, email, Drive, Excel. Forward invoices to Naia and she reads, registers, and classifies them — without opening the app.
Give suppliers Naia's email address. She handles registering their invoices and interacting with them if needed.

Estudio Arquitectura Vega SL
Invoice details
Lines
Documents
1 documentBank movements
0 linkedThere are no related bank movements.
Make recurring
An identical invoice will be generated on schedule using this invoice as template.

Real-time visibility of all your invoicing.
Without you entering a single data point. Search, filter, sort. Or ask Naia via WhatsApp for exactly the data you need.
“Naia, tell me which suppliers we've spent the most with in the last 2 months”
Naia works like an office colleague.
Connect the services you already use: Drive, Sheets, Gmail. Naia operates them for you — reads files, updates spreadsheets, and sends emails without you touching anything.
Tell her what you need in one sentence. She combines the necessary tools to execute it.

The tax complexity others ignore.
Naia understands Spanish tax regulations: VAT rates, IRPF withholding, intra-EU operations, equivalence surcharge, credit notes, and the official AEAT record.
When you register an invoice, Naia automatically calculates the correct tax treatment. Without you knowing what reverse charge means.
“What your accountant does for you at quarter-end, Naia does with every invoice.”
Tax coverage
What Naia resolves automatically on every invoice.
| Concepto | Detalle | Estado |
|---|---|---|
| Standard, reduced & super-reduced VAT | 21%, 10%, 4% — applied by operation type | Automático |
| VAT exempt | Art. 20, 21, 22, 25 LIVA — training, healthcare, exports | Automático |
| Professional IRPF withholding | 15% standard, 7% new freelancer | Automático |
| Rental IRPF withholding | 19% on commercial lease | Automático |
| Intra-EU operations | Reverse charge by EU country | Automático |
| Equivalence surcharge | 5.2%, 1.4%, 0.5% by VAT type | Automático |
| Credit notes | Correction, cancellation, differences | Automático |
| AEAT Record Book | Official export — issued and received sheets | Automático |
| Quarterly tax summary | Output/input VAT, net position, withholdings | Automático |
| Mandatory legal text | Legal literals on exempt and intra-EU invoices | Automático |

Comply with Verifactu
from WhatsApp.
Naia will generate invoices with electronic signatures, QR codes, and AEAT registration. Certified Verifactu software, operated by conversation. Without changing how you work.
Workflows that adapt
to how you work.
Tell Naia what you need and she figures out how to do it. Combines channels, actions, and destinations without you thinking about the system.
“Forwarding a supplier invoice”
You receive an invoice. Forward it to Naia. She registers it, saves the document, and applies the correct tax treatment.
“Give Naia's email to your suppliers”
Invoices arrive directly. Naia processes them without you forwarding anything. You review only if there are questions.
“Invoice García for €4,200 + VAT”
Naia prepares the draft, applies VAT and withholding, and asks for your confirmation before issuing. She sends it if you want.
“Go to Drive and register all May invoices”
Naia accesses the folder, reads invoices one by one, registers them with tax data, and detects duplicates.
“Send the quarter to the accountant”
Naia prepares the package: issued invoices, received invoices, AEAT Record Book in official format. Your accountant gets it organized.
“Which invoices are pending collection?”
Naia replies via WhatsApp with the summary: amounts, due dates, and who owes what. She can also follow up for you.
“You won't have to enter a single data point yourself.”
Any day.
At any hour.
Naia doesn't have office hours. She works when you need her.
Forward a WhatsApp on a Sunday night and she processes it instantly.
Ask for an invoice on a public holiday and she issues, sends, and registers it. Holiday for everyone except her.
Before you get to the office, your invoices are already registered and classified.

Invoicing is just one part of your admin.
The idea isn't to invoice faster. It's to stop spending time every week on your company's admin.
Match invoices with bank movements.
Naia connects to your bank and automatically reconciles payments and collections against registered invoices.
Accountant & tax filingYour accountant gets documentation ready.
AEAT Record Book, tax summary, issued and received invoices. All verified and organized, every quarter.
“You focus on your business. Naia handles the admin.”
Start with your
next invoices.
Send an invoice via WhatsApp or email. Naia reads it, registers it, and shows you the result.
Unlimited users. Unlimited invoices. All features included. You pay for the work Naia does, not for opening entries in a tool.
No credit card · No commitment · Cancel anytime
Everything included
We don't charge you for adding more users to a tool. We charge for the administrative work Naia does for your business.