Guatemala · NIT
Guatemala NIT Format Checker
Check that a Guatemalan NIT (Número de Identificación Tributaria) has the correct format.
What is a Guatemalan NIT?
The NIT (Número de Identificación Tributaria) is Guatemala’s tax identification number, issued by the Superintendencia de Administración Tributaria (SAT). It is a number followed by a check digit from 0 to 9 or K — as in 1234567-9. Since October 2023, new NITs for Guatemalans and domiciled foreigners are the first 9 digits of their CUI.
Guatemalan NIT format
A number and one check character; 2 to 12 characters in total.
(0–9 or K)
Example: 1234567-9 (illustrative format; passes the common mod-11 check).
- Separators: The hyphen, spaces and dots are optional; a lower-case k is read as K.
- Check digit: Mod 11 in common use; the SAT does not publish the weights.
- CUI-based NITs: Since 4 October 2023, new NITs for Guatemalans and domiciled foreigners are the first 9 digits of the CUI.
- Format check only: This checker accepts 7 to 10 characters and does not test the check digit or query the SAT. Some older NITs are shorter and are not yet accepted.
How to check a Guatemalan NIT
- 1 Find the NIT on the supplier’s FEL invoice.
- 2 Enter it above, with or without the hyphen. The checker confirms the format.
- 3 To check the supplier’s compliance record, use the SAT’s Verificador Integrado.
- 4 Need the background on Guatemalan tax IDs? Read our Guatemala tax ID guide.
Frequently Asked Questions
How do I verify a supplier’s NIT? (¿Cómo verifico el NIT de un proveedor?)
The SAT’s Verificador Integrado lets anyone check, from a NIT, whether a taxpayer has formal tax non-compliance on record, and verify tax documents. Our checker confirms the NIT’s format only.
Is my NIT my DPI / CUI number?
For NITs created from 4 October 2023, the NIT is the first 9 digits of the CUI, for Guatemalans and domiciled foreigners. NITs created earlier did not change, and the SAT says both numbers can be used with it.
Why does my NIT end in K?
The last character is a check digit, which the SAT allows to be 0 to 9 or an upper-case K. Under the widely used mod-11 method, K stands for a result of 10; the SAT does not publish the weights.
How many digits does a NIT have?
Between 2 and 12 characters including the check digit, according to the SAT. Older company NITs are often only 5 or 6 characters long, while newer NITs have up to 9.
What does “CF” mean on a Guatemalan invoice?
CF means Consumidor Final — an anonymous buyer without a NIT. It cannot be used on invoices of Q2,500 or more.
Does a correct check digit prove a NIT exists?
No. The check digit only catches typos. FEL certifiers check the buyer’s NIT against the SAT’s taxpayer register (RTU), which is what confirms it exists.
Last reviewed: , against official sources.
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