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El Salvador

El Salvador uses the DUI number as the tax identifier for Salvadoran natural persons of legal age, after the NIT/DUI homologation, and the 14-digit NIT for legal entities, foreign natural persons, minors, state institutions, international organisations, and other entities covered by the taxpayer register.

SV SLV 2 TIN types Last reviewed 2026-06-05

TIN types

2 published formats. Open a type to see examples, structure details, and official sources.

Validate El Salvador TIN
El Salvador Unique Identity Document (DUI)
Current Individuals

Registro Nacional de las Personas Naturales (National Registry of Natural Persons)

The DUI is the national identity document number for Salvadoran natural persons and is used as the NIT for Salvadoran adults after the NIT/DUI homologation.

Details
Examples
02345678-3 04371452-5
Where to find it

On the Salvadoran Documento Único de Identidad card and in government login or tax-service journeys that ask Salvadoran adults for DUI or NIT/DUI.

Common names
DUI Documento Único de Identidad NIT/DUI
Structure
1-8 Identifier Eight-digit personal identity number.
10 Check digit Control digit printed after the hyphen.
Official source
rnpn.gob.sv mh.gob.sv transparenciafiscal.gob.sv github.com
El Salvador Tax Identification Number (NIT)
Current Individuals Entities

Dirección General de Impuestos Internos (Internal Revenue Directorate), Ministerio de Hacienda (Ministry of Finance)

The NIT is the tax identification number assigned through the Ministry of Finance taxpayer register to legal entities and other registered subjects, and to natural-person cases that are not covered by the adult Salvadoran DUI replacement.

Details
Examples
0614-050707-104-8 0614-141103-102-5
Where to find it

On the NIT Digital PDF or legacy NIT card, and in DGII online services that request the taxpayer NIT/DUI.

Common names
NIT Número de Identificación Tributaria NIT Digital
Structure
1-4 Municipality code Municipality code associated with the person or entity.
6-11 Date segment Date of birth for a natural person or establishment date for a legal person, shown in day-month-year order.
13-15 Sequence Sequential number within the NIT.
17 Check digit Control digit printed after the final hyphen.
Official source
transparenciafiscal.gob.sv mh.gob.sv transparencia.mh.gob.sv arthurdejong.org