- DATE:
- AUTHOR:
- The Product team at Griffin
Additional customer data requirements for 01 February 2026
Due to regulatory requirements, we need you, our live customer, to collect additional information from your own customers (see below) and to share it with us by 01 February 2026. This affects all of your new and existing customers with dedicated Griffin bank accounts (savings accounts, embedded bank accounts, dedicated safeguarding, dedicated client money). This does not affect members of a pooled account or bare trust savings.
This does not affect you if you only use our sandbox and do not have access to a live organisation.
Why are we asking for this?
We’re asking for this additional information to comply with requirements set by His Majesty's Revenue and Customs (HMRC), the Bank of England and the Prudential Regulation Authority (PRA), as well as the requirements set out in the United States' Foreign Account Tax Compliance Act (FATCA).
What you need to do
We've broken this down into three stages:
Stage 1 | Collect - if you don't already, start collecting the additional information (see below) from new and existing customers. Start as soon as possible.
Stage 2 | Send - send the information to us via API through your existing Griffin onboarding workflow. Let us know if you'd like to start updating information and we can help you get setup.
Stage 3 | Switch workflow - switch to a new Griffin onboarding workflow which mandates the additional information. More details coming soon.
All three stages must be complete by 01 February 2026.
Timeline
Now: Start collecting and sending data (stages 1 and 2)
Coming weeks: We'll share details about stage 3 and offer one-to-one support sessions
01 February 2026: Deadline for all stages to be complete
Stage 1 - collecting additional information
This applies to your customers with any of these account types:
Savings account
Dedicated client money account
Dedicated safeguarding account
Embedded bank account
Note: We do not need this information for members of pooled accounts or bare trust savings.
Additional information we need
For Individuals:
Tax residencies (all countries)
US citizen status
Tax identification number (TIN) for each country
Risk rating (if you use Reliance)
For Sole Traders:
Tax residencies (all countries)
US citizen status
Tax identification number (TIN) for each country
SIC (Standard Industrial Classification) code
Business size
Risk rating (if you use Reliance)
Balance sheet size (optional)
Number of employees (optional)
For Limited Companies:
For the Directors and Persons with significant control:
Tax residencies (all countries)
US citizen status
Tax identification number (TIN) for each country
For the company entity:
SIC (Standard Industrial Classification) code
Business size
Risk rating (if you use Reliance)
Balance sheet size (optional)
Number of employees (optional)
If you have questions about the information and the format, you can see our FAQs at the link below or reach out to us at support@griffin.com.
Stage 2 - sending us the additional information
You can send us the data today through our existing API:
List the claims (data fields) - See the API reference linked here
Update customer information - Follow the guides in the documentation, for example this guide for individuals linked here
Stage 3 - integrate with a new onboarding workflow
The new onboarding workflow will be available by 1 November 2025. You can choose when to switch over before the 1 February 2026 deadline. We will be in touch with more updates before 1 November 2025.
Questions?
We're here to help. Our product and engineering teams will be reaching out over the next few weeks to schedule one-to-one support sessions. In the meantime, just reach out at support@griffin.com or get in touch with your Customer Success manager.
Updated on 09 October 2025 to clarify that stage 2 (updating information) can begin by getting in touch with us first.
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