Is the Inscrição Estadual valid?

It is valid in format — it satisfies the chosen state's own check-digit rule — but fictional and not registered with any tax authority.

Why do I have to choose the state?

Each of the 27 UFs has its own length, prefix and check-digit algorithm, so the generator needs the UF to build a valid number.

Can I use them in production?

Only for development, testing and QA. They are fictional and must not be used to impersonate a business.

Inscrição Estadual Generator (all 27 UFs)

Live

Generate a valid-format state tax registration per UF.

All generated data is fictional and intended for development, testing, QA, prototyping, and automation only. Do not use it for fraud, impersonation, or illegal activity.

Configure the options and press Generate to produce output.

About this tool

Each of the 27 UFs has its own length, prefix and check-digit rule. Pick a state and this tool builds a fictional number that satisfies that state's exact algorithm, optionally masked. The same generator backs the company generator's state registration field. Fictional, for technical testing only.

How it works

Pick the state (UF), whether to apply the display mask, and how many numbers to generate.
Optionally set a seed for reproducible output.
Press Generate, then Copy, Download JSON or Download CSV.

Example output

[
  "676.760.127.080",
  "694.480.949.991"
]

API endpoint

curl "https://codetoolshub.dev/api/v1/br/inscricao-estadual?count=3"

API

Frequently asked questions

Is the Inscrição Estadual valid?: It is valid in format — it satisfies the chosen state's own check-digit rule — but fictional and not registered with any tax authority.
Why do I have to choose the state?: Each of the 27 UFs has its own length, prefix and check-digit algorithm, so the generator needs the UF to build a valid number.
Can I use them in production?: Only for development, testing and QA. They are fictional and must not be used to impersonate a business.