Tax Transparency Reporting · TIN Validator

Global TIN validator

Q: How does pricing work?

Validation is priced from EUR 0.01 per record and billed in 100-record blocks with credits, where 1 credit equals EUR 1. A batch of 1 to 100 records uses 1 credit and billing rounds up to the next block. The minimum credit pack is EUR 50, retries caused by a REGREP error are free, and prices exclude VAT.

Check tax identification numbers before they reach a filing. REGREP validates TIN structure, syntax and checksums across 111 countries — in bulk, or straight from your own systems by API.

✓ Free tier: 25 records every month · From €0.01 per record · Bulk and API

Create free account → Get a demo

✓ VALIDATION COMPLETETIN · 111 COUNTRIES

What it covers

TIN validation across 111 countries

REGREP checks TIN structure, syntax and checksums. It confirms format validity — not that a number exists or belongs to a given person.

111-country rule sets

Structure, syntax and checksum rules for TIN formats across 111 countries, kept current as authorities change them.

Bulk upload and REST API

Validate a whole file in one pass, or call the API from your onboarding, KYC or pre-filing checks.

Per-record results you can act on

Every record returns a pass or fail with the reason, and the full result set downloads as a report.

How it works

From a list of numbers to a validated report

No implementation project. Send your TINs, and REGREP detects each country format, runs the checks and returns a report.

Input

Upload a file of TINs with their country codes as CSV or Excel, or send them to the API.

Detect

REGREP identifies each country's TIN format from the country code on the record.

Validate

Structure, syntax and checksum rules run per record across the 111-country rule set.

Output

Each record returns a pass or fail with the reason; download the full results as a report.

Pricing

Pay only for what you validate

Start with 25 free records a month, then pay per record with credits — no plan, no annual commitment.

Free tier €0 No card required

✓25 records every month
✓Full per-record results and downloadable report
✓1 regulated entity
✓Upgrade to bulk and API any time

Create free account

Pay as you go From €0.01/record Billed in 100-record blocks · Prices exclude VAT

✓Unlimited records — pay only for what you validate
✓Bulk file upload and REST API
✓All 111 country rule sets
✓1 regulated entity
✓Retries caused by a REGREP error are free

Create free account →

How usage billing works

Per-record rate	From €0.01
Billing block	100 records
REGREP-error retries	Free

Credits

1 credit	€1
Minimum credit pack	€50
Redeemable on	Any REGREP module

1 credit = €1. A batch of 1–100 records uses 1 credit; billing rounds up to the next 100-record block. Credit packs are purchasable in EUR, GBP or USD; the credit ledger is in euro.

See full pricing →

Keep reading

Related to TIN validation

Free tool

Global TIN Format Validator

Check tax identification numbers against published country format rules before they reach a return.

Open the validator →

Use case

CRS & FATCA across jurisdictions

How funds, financial institutions and trustees clean their account data before filing across every jurisdiction they report to.

Read use case →

Guide

Tax transparency guide

Plain-language explainers on CRS, DAC2, FATCA and CARF — who reports, what is due and when.

Read the guide →

Deadlines

Reporting deadlines

The reviewed CRS, FATCA and CARF filing dates your validated TINs feed into, each shown in its local timezone.

View deadlines →

FAQ

Questions, answered

What does the TIN validator check?

It checks the structure, syntax and checksum of each tax identification number against that country's format rules, across 111 countries. It confirms format validity — it does not confirm that a number exists or that it belongs to a particular person, and it never queries a tax authority register.

What does the free tier include?

You can validate 25 records every month and see the full per-record results, with the report available to download. The free tier covers 1 regulated entity and manual upload; bulk files and the API are on pay-as-you-go.

How does pricing work?

Validation is priced from €0.01 per record and billed in 100-record blocks with credits, where 1 credit = €1. A batch of 1–100 records uses 1 credit, and billing rounds up to the next block. The minimum credit pack is €50, retries caused by a REGREP error are free, and prices exclude VAT.

Can I validate TINs through an API?

Yes. A REST API runs the same 111-country rule set, so you can validate TINs during onboarding, KYC or a pre-filing check without uploading a file. API validation is billed the same way as bulk upload.

Validate every TIN before it reaches a filing.

Create a free account and check 25 records this month at no cost.

Create free account → Get a demo