Stay on top of expenses.
From invoice to expense, with the document a click away.
Expenses
3 sample invoices
Melso reads their details and turns them into expenses.
Tax service with an AI agent
And human professionals behind it
Your agent gathers your invoices and handles requests on WhatsApp. Our tax professionals prepare and file your returns; you review and approve them in the app.
Your business, all in view.
Income, expenses and upcoming taxes. Your numbers and your next steps, together in one place.
Delegate the paperwork. And more.
Your agent organizes expenses, prepares invoices and helps you understand your numbers.
Invoices ready to approve.
Review the draft in the app. You approve the exact version before it is issued.
Invoice
Draft
- Customer
- Example customer
- Date
- Oct 3, 2026
Website design€600.00
- Subtotal
- €600.00
- VAT (21%)
- €126.00
- Total
- €726.00
The month, on one page.
“Summarize my income and expenses for the month.”
Monthly reportSeptember 2026
- Income
- €3,800.00
- Expenses
- €860.00
Expenses by category
- Services
- €420.00
- Utilities
- €260.00
- Software
- €180.00
september-report.pdf
From email and Drive to your books.
Authorize your connections. Ask Melso to find invoices in your connected email and Drive that you haven’t recorded.
Connect your accounts
Gmail
Google Drive
Expenses to review
You authorize. Melso files.
Our tax professionals prepare, review and file your included Spanish returns. You authorize the exact draft in the app.
Real tax professionals
Preparation and review for your activity and Spanish tax profile.
Your authorization in the app
The exact draft, checked by you before it is filed.
Filing and the receipt
We file with the required authority and deliver the actual receipt from Spain’s tax agency, the AEAT.
Form 303 · Q3 2026
Awaiting your approvalTo pay
€870.30
- Direct debit
- October 15
- Filing deadline
- October 20
Slide to the end, tap twice, or press Enter or space to authorize filing this draft.
- You authorize this draft
- Our tax professionals review it
- Melso files it with the AEAT
One plan. A clear scope.
Pro and Plus include your tax service in Spain, your annual Renta return (modelo 100) and your own AI agent. We confirm coverage for your tax profile before you subscribe.
See plans and pricing
Cancel anytime.
Questions
Frequently asked questions.
No. Write to Melso in English on WhatsApp and it answers in English, and the app works in English too. The returns themselves are Spanish forms, and you can ask about any box before you approve.
Melso and its professionals prepare and review the included returns for your activity and tax profile. You review and approve the draft in the app. With the required authority, the professional files it with the AEAT. The actual receipt confirms filing; approval alone does not.
Yes. Melso collects what your registration needs and a Melso gestor files it with Hacienda and the Seguridad Social, then writes to you with the next steps.
It includes keeping your invoices and expenses in order, professional preparation and filing of the included returns for your profile, your annual income tax return (Renta, form 100), issuing invoices once you approve them and chatting on WhatsApp, with AI usage up to a monthly limit. Payroll and letters from Hacienda aren't part of the fee unless we confirm it in writing.
Day to day happens on WhatsApp: you send receipts and invoices, ask questions and get reminders. The app is where you review and approve. A “yes” in the chat doesn't approve a return or issue an invoice.
We review your situation and help you gather the documents. We agree which quarter you start with Melso and who handles each part during the switch.
We confirm the service scope for your activity and tax profile before you subscribe. Obligations outside that scope need a separate agreement; a reminder does not mean preparation or filing is included.
Your tax obligations depend on your activity and tax profile. We confirm which returns the service covers before you subscribe.
- Autónomo
- Spain's word for self-employed: freelancers, contractors and sole traders who invoice in their own name.
- Hacienda (AEAT)
- Spain's tax agency. Melso's professionals file your included returns with the required authority after your approval.
- NIE
- Your foreigner identity number. As an autónomo it's your tax ID, and it goes on every invoice you send.
- Seguridad Social and the cuota
- Spain's social security. Autónomos pay a monthly contribution, the cuota, that depends on what they earn.
- Modelo 303
- A Spanish VAT return. Whether you must file it and which expenses qualify depends on your tax situation.
- Modelo 130
- An income tax prepayment return for some self-employed people. Your activity and withholding arrangements determine whether it applies.
Filing and direct-debit deadlines vary by return and period. Check the AEAT calendar for the applicable year. AEAT calendar.
Less paperwork. More time for you.
Get started with Melso or tell us about your situation on WhatsApp.