Last updated: 03 Nov 2025
FATCA Services in the United Kingdom
End-to-end FATCA compliance for banks, insurers and other financial institutions in the United Kingdom: IRS registration (GIIN), implementation advisory, reporting to HMRC via Sesch USA LLC as transmission agent as well as reviews of data, processes & governance – transparently priced.
Highlights (at a glance)
Reporting to HMRC
The UK operates under a Model-1 IGA: FATCA data is reported to HMRC, which then forwards it to the IRS.
HMRC Model-1 Deadlines
Submission via Sesch USA LLC
Transmission agent for secure submission to HMRC including audit-proof documentation and evidence.
Submission Delegation
Data quality & governance
Validation and plausibility checks prior to upload; optional review of processes and controls.
Validation Governance
Services: Start · Build · Run · Assurance
Packages & pricing (United Kingdom — HMRC)
START — IRS registration & setup
For new/reactivated GIIN & clean onboarding
€ 1,800 fixed fee
- IRS registration & GIIN (portal, roles, policies)
- Set-up of reporting relationship with HMRC
- Checklist & governance template
BUILD — Implementation & advisory
Process design, validations, training
€ 3,200 from (small scope)
- Onboarding/indicia flows, DQ rules (light)
- Workshops & guidelines (remote)
- Change handling & cutover planning
RUN — Filing to HMRC
Transmission-plus with correction run & evidence
€ 1,200 NIL · € 2,900 ≤300 · € 4,900 ≤1,000 · € 8,500 ≤5,000
- Data checks, packaging/sign/encrypt
- Submission to HMRC via Sesch USA LLC
- Error handling & 1–2 correction runs (depending on package)
ASSURANCE — Review & governance
For management, compliance & internal audit
€ 2,400 Quick review · € 4,800 Deep dive
- Controls (TIN/GIIN, classification, DQ rules)
- Sampling & findings report (remediation plan)
- Audit bundle & management summary
Add-ons & conditions
Additional correction run: € 350 · CSV→XML conversion: from € 800 · Data clean-up (TIN/mapping): from € 1,500 · Express ≤5 business days: +20% · Additional legal entity (same source data): +40% · 3-year agreement: –15% on package prices · T&M expert/tech: € 220/h · € 160/h.
Assumptions: 1 jurisdiction (UK/HMRC), data delivery ≤15 business days before filing, defined sign-off owner.
Process & responsibilities
Your institution
- Engagement and (where desired) authorisation for submission to HMRC
- Provision of relevant data & contact persons
- Approval decisions and governance (policies/controls)
Owner Data
USTaxBanks / Sesch USA LLC
- Technical & functional validation of reporting data
- Submission of FATCA reports to HMRC as transmission agent
- Support with error messages, corrections & follow-up questions
Execution Support
FAQ
Who submits the FATCA report in the United Kingdom?
In the UK, FATCA reports are filed with HMRC. Mandated service providers can submit on behalf of the institution. Sesch USA LLC can act as transmission agent and file FATCA reports to HMRC for you.
Is IRS registration still required?
Yes. Institutions need a GIIN and must collect/report US TINs. We handle IRS registration as part of the START module.
How do you ensure data quality?
We review data before submission using defined validation and plausibility rules. Deviations are addressed before the report is submitted to HMRC.