Management for SMEs and freelancers
Invoice, collect and manage your company from a single platform.
gesTUSSER connects your day-to-day operations, from quote to payment, with your tax information up to date and Verifactu included.
- Invoicing
- Quotes
- SEPA payments
- Taxes and forms
- Treasury
- Inventory
- Production
- Staff
- Traceability
No installations · No lock-in · Verifactu and signed FacturaE
Every invoice keeps its fingerprint and its AEAT submission record.
Management split across spreadsheets, emails and folders has a cost. And Verifactu now has a date.
Reconciling invoicing by hand takes hours every month, and the anti-fraud regulation additionally requires your software to sign, chain and electronically report every invoice: from 1 January 2027 for corporate income tax payers and from 1 July 2027 for freelancers and professionals.
Reaching those dates with software that has not been adapted forces a rushed migration and exposes you to penalties.
gesTUSSER already complies today. Enrol when you decide, without waiting for the deadline.
What you need to invoice and manage
Tax compliance, with enrolment under your control
Every issued invoice carries its Verifactu fingerprint, whether you are enrolled or not. Activate enrolment from your company profile and invoices are submitted to the AEAT as soon as they are issued. You can work against the AEAT test environment first, with no tax effect. Verification QR and signed FacturaE for public administration.
Professional invoicing in minutes
Invoices, credit notes, proformas and delivery notes in a few steps. Multiple series, mixed VAT (4, 10 and 21%) and email delivery with your branded PDF.
Collections and due dates under control
Due dates on track, one-click SEPA remittances, partial-payment control. You always know who owes you, how much and since when.
Quotes tracked through to the invoice
Build offers with your items and conditions, send them and convert them to invoices when accepted. Each offer shows its status: sent, accepted or rejected.
Your numbers, clear and current
Income and expense charts, period comparisons and a 12-month cash-flow forecast. Tax panel with VAT, income-tax withholdings and forms 303, 111 and 130 calculated from your own records.
Treasury with your bank movements
Import each account statement in Cuaderno 43, Excel or CSV. Several accounts per company, with the balance, the last imported period and the movement detail on a single screen.
Centralized staff management
Holidays, payroll, employee expenses, time clock and role-based permissions, managed from each employee's record.
Tax compliance, with enrolment under your control
Every issued invoice carries its Verifactu fingerprint, whether you are enrolled or not. Activate enrolment from your company profile and invoices are submitted to the AEAT as soon as they are issued. You can work against the AEAT test environment first, with no tax effect. Verification QR and signed FacturaE for public administration.
Professional invoicing in minutes
Invoices, credit notes, proformas and delivery notes in a few steps. Multiple series, mixed VAT (4, 10 and 21%) and email delivery with your branded PDF.
Your numbers, clear and current
Income and expense charts, period comparisons and a 12-month cash-flow forecast. Tax panel with VAT, income-tax withholdings and forms 303, 111 and 130 calculated from your own records.
Quotes tracked through to the invoice
Build offers with your items and conditions, send them and convert them to invoices when accepted. Each offer shows its status: sent, accepted or rejected.
Document traceability
Follow the trail of every document
From purchase to sale, every document linked to the one before and the one after in a single map.
The whole chain on a single screen
From any quote, invoice, delivery note, proforma or purchase you open a map that groups the operation into Purchase, Warehouse and Sale. Each document is a card with its number, date and amount, and a click takes you straight to it. Arrows cross purchase and sale through stock, showing which incoming entry the material you sold came from.
- The full path of an operation on a single screen.
- Purchases linked to sales: identifies which supplier and which goods receipt each material came from.
- Stock step by step: follow the material across warehouse and location, even between transfers.
- One click to any document: navigate the chain without searching.
- No configuration: the map is generated from the documents you have already recorded.
And it also scales to complex operations: multiple suppliers, transfers between warehouses, branched payments and corrective invoices, all linked.
From invoicing to full business management
Activate the modules you use today and add the rest when you need them.
Complete invoicing
- Issued and received invoices — Full invoicing cycle management with automatic numbering by series
- Credit and cancellation invoices — Correct or cancel invoices in compliance with regulations
- Proforma invoices — Send preliminary invoices before formalizing the transaction
- Delivery and receipt notes — Document goods delivery and link them to invoices
- Multiple invoicing series — Organize your invoicing with custom series
- Integrated email sending — Send invoices and documents as PDF directly to clients
- Document customization — Design your invoices with your logo and corporate format
- Additional income and expenses — Record non-invoice transactions: fees, taxes and recurring income
- Issued and received invoices — Full invoicing cycle management with automatic numbering by series
- Credit and cancellation invoices — Correct or cancel invoices in compliance with regulations
- Proforma invoices — Send preliminary invoices before formalizing the transaction
- Delivery and receipt notes — Document goods delivery and link them to invoices
- Multiple invoicing series — Organize your invoicing with custom series
- Integrated email sending — Send invoices and documents as PDF directly to clients
- Document customization — Design your invoices with your logo and corporate format
- Additional income and expenses — Record non-invoice transactions: fees, taxes and recurring income
- Quick quote creation — Generate professional offers with your items and prices
- Status tracking — Know where each offer stands: sent, accepted, rejected
- Convert to invoice — Turn accepted quotes into invoices with one click
- Payment plans — Split amounts into instalments with custom due dates
- Commercial terms — Attach specific clauses and conditions to each quote
- Complete records — Tax data, addresses, multiple contacts, payment terms
- Department contacts — Distinguish between admin, billing and commercial contacts
- Client groups — Segment your portfolio for analysis and communication
- Custom fields — Add additional information tailored to your business
- SEPA mandates — Manage direct debit authorizations from your clients
- Complete history — Access all invoices, quotes and delivery notes for each client
- Due date tracking — See which invoices are pending, overdue or paid
- SEPA bank remittances — Generate direct debit files ready for your bank
- Multiple payment methods — Transfer, direct debit, card or cash
- Configurable payment terms — Set default conditions per client
- Payment marking — Record partial or full payments with collection date
- Bank statement import — Upload your bank's file from the application
- Cuaderno 43, Excel and CSV — Accepted formats, no prior conversion
- Several accounts per company — Each account with its own statement and history
- Balance and last imported period — Check the status of every account at a glance
- Movement detail — Review the imported movements of each account
- Verifactu fingerprint on every invoice — Electronic signing and chaining with the previous one, whether you are enrolled or not
- Enrolment from the company profile — Activate automatic submission and your invoices reach the AEAT as they are issued
- Live and test environments — Check your invoicing against the AEAT test environment, with no tax effect
- Your own signing certificate — Uploaded by the company and stored encrypted in a private key store, with no later download or lookup
- Signed FacturaE — Electronic invoice valid for public administration
- Verification QR code — Each invoice includes its Verifactu verification QR
- Invoice chaining — Each invoice links to the previous one through a cryptographic hash, so any alteration is detectable
- Simplified and full invoices — Automatic classification per regulations
- Quarterly and annual tax dashboard — Output VAT, input VAT and the amount to pay or offset for each period
- Form 303 (VAT) — Charged and deductible VAT broken down by rate (4%, 10%, 21%) with the settlement result calculated
- Form 111 (Income tax withholdings) — Withholdings on suppliers and employees grouped by tax ID, with the total to pay
- Form 130 (Instalment payment) — Accumulated net income, amount to pay and deduction for withholdings, calculated automatically
- Withholdings received — See what your clients withhold and deduct it from your instalment payments
- Export to Excel — Download each form's data to review it or send it to your accountant
- Project management — Organize work by projects linked to clients and cost centres
- Time tracking — Log time spent on each task and project
- Cost centres — Assign income and expenses to departments or business lines
- Invoicing link — Connect tasks and projects directly to their invoices
- Incident logging — Create and assign incidents to users with status tracking
- Messages and threads — Message threads within each incident
- Real-time notifications — Receive Telegram alerts
- Auto-creation from email — Incidents are generated from incoming emails
- Visual dashboard — Income, expense and monthly evolution charts
- Period reports — Filter by day, month, quarter or year
- Cash flow forecast — 12-month projection based on your actual data
- Excel export — Download any report as a spreadsheet
- Income and expense breakdown — View separately or combined, with VAT type detail
- Real-time stock control — Check stock by item, warehouse and location
- Multiple warehouses — Manage several warehouses with independent physical locations
- Stock movements — Full traceability of inbound, outbound and inter-warehouse transfers
- Minimum stock — Set minimum stock alerts per item
- Inbound delivery notes — Record goods receipts linked to your purchases
- Work orders — Create, plan and execute production orders with status tracking
- Bill of materials — Define product composition with materials and quantities
- Execution tracking — Log who performs each operation and time spent
- Order hierarchy — Organize parent-child orders for complex productions
- PDF generation — Print work orders for the shop floor with all information
- Employee records — Personal data, document type, start and end dates
- Payroll management — Upload, store and distribute payslips as PDF
- Holidays and absences — Track available, requested and approved days
- Expense sheets — Employees log expenses, you approve or reject them
- Time clock — Clock in and out for each worker
- Secure storage — Payslips are stored encrypted in the cloud
- Recurring billing — Manage periodic services with automatic renewal
- Status tracking — Monitor which contracts are active or nearing expiry
- Invoice linking — Generate invoices directly from each contract
- Purchase logging — Document purchases linked to supplier and received invoice
- Purchase status — Track the full cycle from request to payment
- Document linking — Connect each purchase to its delivery note and invoice
- Dropbox — Store and organize your documents in synced folders
- Telegram — Receive notifications, clock in and log tasks from your phone
- Email — Send invoices directly from the platform
- Supplier invoice reading — Optical recognition and automatic extraction of the invoice data
- Granular roles and permissions — Define what each user can view, create, edit or delete
- Multi-company — Manage multiple companies from a single account
- Encrypted data — Banking information and sensitive documents protected with encryption
- Activity log — Know who created or modified each document and when
- Access from anywhere — 100% cloud-based. All you need is a browser
gesTUSSER in action
Invoicing, Verifactu compliance, quotes and treasury in a single panel.
Verifactu in gesTUSSER, and enrolment when you decide.
Anti-fraud regulations require integrity and immutability of every invoicing record. gesTUSSER already complies, and you choose when to start submitting to the AEAT.
In practice, this means:
- Every issued invoice carries its Verifactu fingerprint, whether you are enrolled or not
- Enrolment is activated from your company profile: from then on your invoices are submitted to the AEAT as soon as they are issued
- You can choose the AEAT test environment and submit as much as you need to check your invoicing, with no tax effect
- Your company uploads its own certificate as the taxpayer: it is stored encrypted in a private key store, cannot be downloaded or inspected afterwards, and signs only your company's documents
- Your invoices include a verification QR any recipient can validate
- Signed FacturaE for invoicing with public administration
- Your invoicing history is chained and verifiable in an inspection
Enrolment is mandatory from 1 January 2027 for corporate income tax payers and from 1 July 2027 for freelancers and professionals, after the postponement introduced by Royal Decree-Law 15/2025. Until those dates it is voluntary. Once the first record has been submitted, enrolment remains in force until 31 December of that calendar year (article 16.5 of Royal Decree 1007/2023).
Issue with the Verifactu fingerprint now and activate enrolment when you decide.
Get started with gesTUSSERFrom signup to your first invoice, in four steps
Sign up
Create your account and enter your company details
Configure
Add your clients, products and invoicing series
Invoice
Issue your first invoice and send it as PDF by email
Grow
Activate more modules when your business needs them
No installations · No lock-in · Access from your browser
For freelancers, SMEs and service companies
Freelancers and self-employed
Invoicing, tax forms and collections from a single screen.
Small businesses and startups
Team, projects and finances in a single application.
Service companies
Maintenance, time tracking, incidents, recurring billing. All connected.
Retailers and distributors
Multi-warehouse inventory, delivery notes, production, real-time stock.
Companies with teams
Payroll, holidays, expenses, time clock and centralized roles.
Frequently asked questions about gesTUSSER
It's the Spanish Tax Agency's invoice verification system. Anti-fraud regulations require your software to guarantee record integrity and report records electronically. It is mandatory from 1 January 2027 for corporate income tax payers and from 1 July 2027 for freelancers and professionals. gesTUSSER already complies.
Not until the mandatory dates; before then it is voluntary. You can activate enrolment from your company profile whenever you decide. Bear in mind that, once the first record has been submitted, enrolment remains in force until 31 December of that calendar year, under article 16.5 of Royal Decree 1007/2023.
Yes. You can choose the AEAT test environment and submit as many records as you need to check that your invoicing is correct, with no tax effect. Once verified, you switch to the live environment.
Your company's own certificate as the taxpayer; a third party's does not work. You upload it in the application and it is stored encrypted in a private key store: it cannot be downloaded or inspected afterwards, and it is used only to sign your company's documents.
It imports your bank account statements in Cuaderno 43, Excel or CSV, supports several accounts per company and shows the balance, the last imported period and the movement detail of each account.
No. 100% cloud-based. All you need is a browser.
Yes. From a single account you can manage several companies and switch between them.
You can add extra users to your plan. See the terms at gestusser.com.
Yes. You can change plan whenever you need to; the new plan gives access to its modules.
Banking data is stored encrypted, sensitive documents have role-based access, and communication with the AEAT is electronically signed.
Yes. Invoices, quotes and delivery notes as PDF, with a copy for you.
Dropbox, Telegram and supplier invoice reading with optical recognition.
Yes. Support in Spanish, handled by our own team.
No. There is no lock-in commitment.
Bring your company's management into a single application.
Invoicing, collections, inventory, staff and tax compliance, with Verifactu from the first invoice.
No installations · No lock-in · Verifactu compliant from day one.
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