Electronic invoicing in Greece is now mandatory
— and our API ensures you are always fully prepared.
As a certified Electronic Invoicing Provider, we offer a complete infrastructure for issuing, transmitting, and archiving invoices directly through our platform — without complex configurations.
With our REST API, any ERP, POS, commercial software, or custom application can be connected within minutes, ensuring:
Compliance with MyDATA & AADE requirements
Automated document transmission
Instant MAPK/QR code generation
Secure 5-year archiving
Fully documented API & sandbox environments
Why Choose Us
Effortless Integration
OpenAPI/Swagger documentation with ready-to-use examples in C#, PHP, JavaScript.
Provider Reliability
99.99% SLA, continuous monitoring and full audit trail.
Security
Data encryption, EU GDPR compliance, secure hosting on Microsoft Azure.
Developer Support
Sandbox environment, webhook testing tools, and a dedicated technical API team.
Scalable Invoicing
From small businesses to ERP integrators — designed to grow with your needs.
Uptime SLA
99,99%
Διαβιβασμένα Παραστατικά
+12,5M
Average Transmission Time
348ms
Connected Applications
+240
What you can do with the API
✅ Create and send invoices (B2B / B2C / B2G)
✅ Retrieve MARK numbers and QR codes from AADE
✅ Manage invoice cancellations / credit notes
✅ Monitor document status (status tracking)
✅ POS & IRIS integration according to A.1155/2023
✅ Retrieve full invoice history
Our API is fully documented and includes a sandbox environment for instant testing.
How it works
1
Create an account
2
Get your sandbox API key
3
Issue test invoices
4
Integrate the API into your software
4
Go live in the production environment
Compatible with all POS and ERP systems in the Greek market
The Provider’s REST API “unlocks” any POS
Our platform is designed to operate with any POS, ERP or custom software that supports REST API communication.
Through the Digital Provider Signature mechanism (Provider’s Signature), the POS gains the ability to process card or IRIS payments, while linking each transaction with the issued invoice from the ERP.
This means that every business can leverage its existing POS terminals, without vendor or provider restrictions, ensuring full compliance and security.
The ERP sends the invoice to the Provider using API methods.
If a customer pays by card, the Provider issues the Provider’s Signature, which is sent back to the ERP for consumption by the POS.
The POS uses the Payment Signature to complete the transaction via card or IRIS.
After the successful payment, the POS returns the updated transaction data to the ERP system
(signatureToken, transactionId, amount).
The Provider completes the invoice issuance process and transmits the document to MyDATA, retrieving
MARK and Authentication Code.
Pricing & Support
We offer subscription plans for every business need.
Basic
For small businesses or startups beginning with e-invoicing.
- 1000 credits / μήνα
- One VAT number – unlimited branches / POS
- Developer & Live portal
- Email support (Basic)
- (Optional) Annual Support Plan
- (Optional) Integration Service
Standard
For businesses with steady invoice volume and reliability needs.
- 2500 credits / month
- One VAT number – unlimited branches / POS
- Developer & Live portal
- Email support (Basic)
- (Optional) Annual Support Plan
- (Optional) Integration Service
Professional
For companies with higher volume or multiple locations.
- 5.000 credits / month
- One VAT number – unlimited branches / POS
- Developer & Live portal
- Email support (Basic)
- (Optional) Annual Support Plan
- (Optional) Integration Service
Premium
For large enterprises requiring SLA & high-level support.
- 10.000 credits / month
- One VAT number – unlimited branches / POS
- Developer & Live portal
- Email support (Basic)
- (Optional) Annual Support Plan
- (Optional) Integration Service
Enterprise Plan
For ERP integrators, software houses & large organizations
The Enterprise Plan is designed for organizations with increased needs in volume, SLA, and technical support.
Pricing and commercial terms are fully customized, based on usage, requirements, and expected document volume.
Request a Custom Quote- Full access to all API & sandbox features
- Customizable credit / document limits
- Email & phone support under SLA contract
- Use with multiple VAT IDs / POS / ERPs / custom systems
- Team training & onboarding assistance
- Special pricing & partnership programs for integrators
Frequent Questions
Billing, Plans & Subscriptions
Answers regarding credits, plans, upgrades, and billing options.
Each plan includes monthly credits, access to the Developer & Live Portal, API documentation, sandbox environment, and email support.
The number of credits varies depending on the selected plan.
Credits apply to all operations.
Wholesale invoices = 1 credit
Αποδείξεις λιανικής = 0,5 credit
POS/IRIS signatures = 0.25 credit
Credits function as a single “usage currency” for all features.
No, credits reset every month.
For higher usage you can upgrade your plan or purchase extra credits at any time.
Yes.
All plans apply to one VAT number and cover unlimited branches / POS terminals.
All POS/IRIS transactions require the Provider’s Signature and consume credits as specified (0.25 credit per signature).
The API remains operational, but invoice transmission is paused until:
you upgrade your plan, or
purchase extra credits.
Yes. You can upgrade or downgrade your plan at any moment directly from the portal.
Technical & API Features
Answers to all technical questions about the API, myDATA, and how the service works. Full API Technical Documentation
Yes. For ERP integrators, software houses, and large providers, we offer the Enterprise Plan, which includes:
Custom pricing based on total document volume.
Special commercial agreements and SLA.
Support for multiple VAT numbers, through a unified dashboard
Unlike standard plans (covering one VAT number with unlimited locations),
the Enterprise Plan enables handling multiple VAT numbers and unlimited locations through a single API integration.
The Provider delivers the Provider’s Signature via API.
The POS executes the transaction and returns payment details,
which are automatically linked to the invoice.
No. When a business uses an Electronic Invoicing Provider, no cash register (FIM/Fiscal device) is required for issuing receipts.
The Provider fully replaces the cash register, since all receipts are issued and transmitted
electronically to AADE via the Provider’s system.
Yes. The API is REST JSON and works with any ERP, POS, e-shop,
or custom application that supports API calls.
the Enterprise Plan allows managing multiple VAT numbers and unlimited branches using a single API key.
The API operates with 99.99% uptime
and is monitored 24/7 using automated monitoring tools.
Tax Incentives for the Adoption of Electronic Invoicing
With the recently introduced legislation, incentives are provided for entities that submit declarations to AADE exclusively through a Certified E-Invoicing Provider, either for issuing and receiving, or only for receiving sales documents.
Taxation
The statute of limitations is reduced to two (2) years or one (1) year, as applicable, instead of the standard five-year period.
During this time, the Tax Administration may issue an administrative assessment, estimated or corrective tax determination (from five to three years for the issuer and from four years for the recipient).
Operating Expense
100% of the expense for producing, transmitting, and electronically archiving invoices during the first year of issuing sales documents via electronic invoicing is recognized as deductible from the company’s gross income for tax purposes.
Tax Refund Acceleration
The deadline for processing tax refund requests is reduced to forty-five (45) days for income tax or VAT refunds, provided the issuers choose and apply exclusively electronic invoicing through a Certified Provider.
New Equipment Purchase
The full cost incurred in the year of implementation is deductible at 100% for the initial purchase of hardware and software required for adopting electronic invoicing.
All displayed prices exclude VAT (24%). The final amount including VAT is calculated during the checkout process.