FatturaPA Validator

FatturaPA / E-Invoice Compliance Checker

Validate an Italian FatturaPA XML e-invoice before sending it to SDI: mandatory fields, Partita IVA / Codice Fiscale checksums, and IVA math consistency.

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Drop a FatturaPA XML export here

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Structural pre-check only — confirms the XML is internally consistent, not that SDI will accept it. Always verify with your commercialista or SDI test environment before relying on this for filing.

About FatturaPA Validator

Validate a FatturaPA XML e-invoice before sending it to SDI: mandatory fields, Partita IVA and Codice Fiscale checksums, and IVA (VAT) math consistency across every line.

SDI rejects malformed e-invoices after the fact, wasting a submission cycle. This tool runs the same structural checks locally: checksum validation on the issuer's Partita IVA and the buyer's Codice Fiscale using the official Agenzia delle Entrate algorithms, and a line-by-line audit that Imponibile × Aliquota IVA actually equals the declared Imposta.

It also flags invoices with a 0% IVA line missing the required Natura code, one of the most common SDI rejection reasons.

Category: Fiscal Compliance

Common Use Cases

Catching SDI rejections before submission
Auditing IVA math on a batch of invoices
Verifying Partita IVA / Codice Fiscale checksums

Key Features

Validates Partita IVA and Codice Fiscale using the official Agenzia delle Entrate checksum algorithms
Audits Imponibile × Aliquota IVA against the declared Imposta on every line
Flags 0% IVA lines missing a required Natura code

The FatturaPA Validator tool is compatible with: Sistema di Interscambio (SDI), Italian Accounting Software.

Run this before submitting to SDI, then use Invoice Sequence Auditor on the same invoice batch to confirm the numbering is gap-free before the fiscal year closes.

Frequently Asked Questions

Does passing this tool's checks guarantee SDI will accept my invoice?

No, it's a structural pre-check confirming the file is internally consistent, not a guarantee of SDI acceptance.

What's the most common issue it catches?

A 0% IVA line missing the required Natura code, which is one of the most frequent real-world SDI rejection reasons.

Built for Italian businesses and accountants who want to catch SDI rejection reasons before, not after, submission.

See tools for accountants →