Focus
Automatic synchronisation of your tax account: how to integrate it via API
What does it mean to synchronise the tax drawer and what data can you access
AdE channels and delegations: the prerequisite that unlocks automation
Security and common errors: how to make the process reliable
Automatic synchronisation of the tax drawer: the ready-to-use A-Cube API
What does it mean to synchronise the tax drawer and what data can you access
Talking about automatic synchronisation of the tax drawer means, in practical terms, no longer treating the AdE portal as a site to consult daily or in specific cases. It can in fact be used to start an integrated flow with your business systems. Even though it is not a continuous, real-time synchronisation, the Revenue Agency web service does allow periodic downloading. It does so thanks to a process that retrieves the documents and makes them available where they are really needed. This automation is generally daily and allows the data to be used with ERP, accounting, treasury and so on.
In practice, what makes sense to automate today via our electronic invoice tax drawer API is the retrieval of active invoices, received invoices and F24. These are three elements that, if managed manually, can slow down business flows between volumes, deadlines and checks.
The SDI system automatic integration covers the transmission and receipt of e-invoicing. But it should be noted that it does not replace the need to have a reliable channel for downloading and realigning the documents available in the Tax Drawer. This is especially true when the goal is to have complete, up-to-date data ready for downstream processes.
How can this logic be turned into an operations-proof process? The first step is to look at the platforms and software involved and, above all, at the prerequisites that enable everything: delegation and appointment.
Box - Manual download or automatic flow? Here’s what changes!
In manual downloading from the AdE portal, the process depends on repeated logins, searches, filters and downloads that can vary in terms of timing and operating methods. It is an activity that holds up as long as volumes are limited, but becomes fragile when documents, companies or reconciliations to be closed increase. With automatic synchronisation, on the other hand, the download becomes a scheduled flow. The documents are retrieved periodically and made available to systems without daily intervention.
AdE channels and delegations: the prerequisite that unlocks automation
To activate an automatic synchronisation of the tax drawer flow, access must be formally enabled through an appointment (for a natural person) or delegation (for a company or natural person).
How does it work? In practical terms, the grant goes through the “Invoices and Fees” portal. The Tax Drawer is the environment from which documents are consulted and downloaded. This is where the intermediary tax drawer delegation also comes into play. With the introduction of the single delegation (in force from 8 December 2025), the Revenue Agency has in fact established how the grant is made for the use of online services. It has also set a precise limit: each taxpayer can delegate a maximum of two intermediaries/appointed persons.
In practice, before even asking which API to use, it is worth setting up the process of how to delegate electronic invoicing correctly and checking that there are no delegations already in place. These could exceed the permitted limit.
At this point, the questions arise naturally: once the delegation has been obtained, how can the management software be used without turning the download into a daily activity? Is it possible to maintain the same level of security in automation even as the number of clients and reconciliations to be managed grows? The answer lies in the API integration, which makes it possible to adopt a bulk download model properly connected to your systems.
Box - Access to data: how it works with delegations
To automate the download, a delegation/appointment must be correctly granted on the AdE channels. In practice: the client enables the intermediary or the company via the Invoices and Fees portal. Only then is it possible to activate an API integration that downloads the documents from the Tax Drawer. It is a fundamental step because it links automation to a clear, verifiable scope and forbids improper access.
API integration: how the “download massivo” model works
At A-Cube we have developed the API Bulk Download from the Tax Drawer. How does it work? Instead of manually consulting the Revenue Agency web service, you build a scheduled flow that every day retrieves the available documents and makes them immediately consumable by the management software. Once the delegation has been granted, the partner (or the IT team) configures the information needed for access and activates the download. From then on, everything is automatic. The API allows you to:
download electronic invoices daily sent and issued without having to visit the Revenue Agency website;
automate the operation and integrate it into the workflow already adopted with ERP, CRM and accounting software, making the data immediately usable;
limit errors and possible oversights;
manage operations centrally from a single interface;
allow access to an appointed person.
The interface provides a clear, real-time view of the documents available, useful for forecasts and internal checks.
In practice, the Bulk Download from the Tax Drawer API works as an intermediary between AdE channels and the applications used. And it turns a repetitive operation into a traceable and scalable flow. Especially ideal when volumes grow or when you need to manage multiple companies in parallel.
Security and common errors: how to make the process reliable
Many may have doubts about the security of APIs with the Revenue Agency and, more generally, about carrying out automation on AdE channels. To understand whether it is safe, you need to ask how it is managed. In practice: who has the authorisations to enter, what they can do, what remains tracked and how the data are handled. And then there is the basic rule: the download cannot happen without a valid delegation.
Another frequent doubt linked to bulk download electronic invoice APIs concerns the handling of any unforeseen issues. Some examples? Missing delegations or delegations not correctly registered, operational limits tied to the Revenue Agency services, documents available at times different from those expected. These are the cases in which the most common errors arise, especially when monitoring and alerts are lacking or there are no retry and reconciliation logics between what the management software expects and what is actually downloadable from the Revenue Agency web service.
We developed the bulk download electronic invoices API to eliminate operational fragilities from the process. Access takes place only in the presence of a delegation/appointment, management is centralised and, above all, the frequent risk of interruptions or improper behaviour linked to credentials is reduced. A concrete example? We send alerts when the login passwords for the AdE portal are about to expire (every 90 days). In this way, renewal happens promptly and in a controlled manner, without having to chase operations or discover the problem when the download stops.
Automatic synchronisation of the tax drawer: the ready-to-use A-Cube API
Thanks to the Bulk Download from the Tax Drawer API, automatic synchronisation of the tax drawer becomes a faster, safer and truly integrated process in your systems: no repetitive access to the portal, no manual exports, documents always available for accounting, ERP and reconciliations. To get started, no setup fee is required: it is enough to activate a VAT number, grant an appointment/delegation and start the automatic download flow. Find out more about the Bulk Download from the Tax Drawer solution: consult the technical documentation or write to info@acubeapi.com
