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8 min read23 Dicembre 2025

Tax Code and ID Card: Complete Guide

The link between Tax Code and Electronic ID Card (CIE). How they are connected and where to find the Tax Code on the card.

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Relationship Between Tax Code and CIE

The Electronic ID Card (CIE) and Tax Code (Codice Fiscale) are two fundamental Italian identity documents, closely connected to each other.

The modern CIE integrates the Tax Code in its NFC chip, allowing unique citizen identification for both registry and tax purposes.

  • The Tax Code is printed on the front of the CIE
  • The Tax Code is stored in the card's NFC chip
  • Both documents are linked in the National Registry

Where to Find Tax Code on CIE

On the Electronic ID Card, the Tax Code can be found:

  • Front of the card: below the photo, in alphanumeric format
  • Barcode: on the back of the card
  • NFC chip: readable with compatible smartphones

Electronic ID Card

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The Electronic ID Card (CIE 3.0)

The CIE 3.0 is equipped with a contactless microchip that contains:

  • Owner's personal data
  • Tax Code
  • Fingerprints
  • Owner's photograph
  • Digital signature

The chip can be read using NFC-enabled smartphones and the official CieID app, available for both Android and iOS.

Online Services with CIE and Tax Code

With the CIE you can access numerous public services requiring Tax Code identification:

  • INPS: Social security services, pension checks, benefit applications
  • Revenue Agency: Tax declarations, refunds, tax drawer
  • Municipality: Certificates, residence registration, permits
  • Health: Choosing a doctor, booking appointments, medical reports
  • Justice: Criminal record, pending charges certificates

The CIE allows access to these services as an alternative to SPID, using the CieID authentication.

How to Request the CIE

To request an Electronic ID Card:

  1. Book an appointment at your municipality of residence
  2. Bring: old ID card (if renewal) or Tax Code
  3. Bring a passport photo or have it taken at the office
  4. Pay the fee (about €22.20 for standard delivery)

The CIE is valid for 10 years for adults, 5 years for minors aged 3-18, and 3 years for children under 3.

Delivery

The CIE is delivered to your home address within 6 working days, or you can choose express delivery within 3 days for an additional fee.

SPID vs CIE: Differences and Uses

Both SPID and CIE can be used for digital authentication, but they have differences:

FeatureSPIDCIE
FormatDigital onlyPhysical card
CostFree (basic)~€22.20
Physical IDNoYes
Travel documentNoYes (EU/Schengen)

What to Do if Tax Code is Wrong on CIE

If you notice the Tax Code printed on your CIE is incorrect, you need to:

  1. First verify the correct Tax Code at the Revenue Agency
  2. Request correction at your municipality of residence
  3. A new CIE will be issued with the correct data

Important

An incorrect Tax Code on the CIE can cause serious problems with online services and tax procedures. Always verify your data when you receive the card.

Calculate Your Tax Code

Verify that your Tax Code is correct before requesting a new CIE

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