San Marino: E-Invoice rules for San Marino companies trading with Italian customers are evolving

August 20, 2021

Italian and San Marino tax authorities settled on a new e-invoicing agreement for B2B transactions between the two companies earlier this year. According to it, San Marino and Italian companies will need to use e-invoices for trade between each other. 

In this article, we’ll look into the details of the new regulations, and explain to you the e-invoicing process between San Marino and Italian companies. 

What’s new?

Businesses in San Marino with an annual turnover of more than ‚ā¨100,000 will need to switch to mandatory e-invoicing when trading with Italian customers as of July 1, 2022. Starting from October 1, 2021, companies can switch to voluntarily e-invoicing in order to prepare for the change. Italian companies are already using the SdI in Italy (Sistema Di Interscambio, the Italian e-invoicing system), and will now be able to use it when trading with businesses in San Marino, as well.¬†

What will the e-invoicing process between San Marino and Italian companies look like? 

San Marino businesses will need to send their e-invoices to the local Secretariat for Finance and Budget, which will then validate them and forward them to the Italian tax and revenue office via the SdI. Afterwards, the Italian tax office will send the validated invoices to the Italian businesses, who will be able to pay them. 

E-invoicing will also be possible in the opposite direction, i.e. Italian companies who sell supplies to San Marino businesses will be able to use the Italian SdI system to invoice them. Again, the process is two-step: first, Italian companies will forward their e-invoices to the SdI, which will then send them to the San Marino Secretariat for Finance and Budget for validation. After that, the San Marino tax authority will forward them to the respective companies, recipients of the e-invoices, for payment. 

In practice, the cross-border exchange of invoices between the two countries will happen in a single system, the Italian SdI, but the San Marino Secretariat for Finance and Budget will oversee the transactions between companies from both states and validate invoices. The new e-invoicing rules concern B2B trade between Italian and San Marino businesses. 


The Italian e-invoicing system, SdI 

E-invoicing has been mandatory for Italian companies since 2019 for all B2B transactions. For B2G (business-to-government) transactions, e-invoicing was already mandatory since 2014, and for B2C trade, an e-invoice must be issued if the customer requests it. For this, the Italian tax office has created the Italian SdI platform (Sistema Di Interscambio), where invoices are verified and approved in real time.

An e-signature is not required for the use of the SdI system, and invoices need to be archived and stored for a period of 10 years. 

With the new agreement, the SdI system is extended to San Marino. 

Fonoa Will Help You to Operate Compliantly in Italy

Thanks to our direct integration with Sistema di Interscambio (SdI), the Italian Revenue Agency, we can help you automate your invoicing processes in Italy. Our solution in Italy supports the issuance of both electronic invoices (Fattura Elettronica) and electronic receipts (Scontrino Elettronico). In that way, it will help you ensure that your business is safe from the high fines for invoicing non-compliance.



Our solution is 'plug&play', and doesn't require weeks of integration. Reach out to us and we will help you to stay compliant in Italy.