Tax Stone

Business Tax

US corp. with foreign shareholders

US corporations with foreign shareholders — branch profits tax, withholding, and W-8 documentation.

Overview

Why this filing matters

US corporations with foreign shareholders — branch profits tax, withholding, and W-8 documentation.

Note — Inbound investment & branch profits.

◉ Who this is for

  • UK founders of US C-Corps
  • Inbound investors in US businesses

✓ What you get

  • Form 1120-F preparation
  • W-8BEN / W-8BEN-E guidance
  • Branch profits tax review

At a glance

Key forms
1120-F / W-8
Category
Business Tax
Turnaround
2–3 weeks once documents are complete
Filed by
ACCA-qualified IRS Enrolled Agent

Our approach

Built for the cross-border edge cases.

Most US-UK filings fail the same way: a treaty position that wasn't disclosed, a foreign account that slipped under FBAR thresholds, a PFIC election filed in the wrong year, a carry-forward not tracked from one preparer to the next. The cost of any single one of those is rarely catastrophic on its own — it's the compounding over multiple filing seasons that quietly turns a clean tax life into a six-figure remediation project.

We start every engagement by looking at the edge cases first — the elections, the disclosures, the carry-forwards, the side-effects on next year's return — and only then turn to the routine line items. The result is a filing that reads cleanly to anyone who picks it up next: another preparer, the IRS, or a successor in your own business.

  • Position memo on every meaningful election, with the reasoning written down for the next return
  • Carry-forwards (FTC, capital losses, PFIC basis) tracked year-on-year so nothing expires unused
  • Plain-English commentary on every position taken — the kind that makes a future audit a non-event
US corp. with foreign shareholders

Our process

How we handle your filing

Four steps from first call to filed return. Fixed fee confirmed before any work begins.

  1. 01

    Intake

    30-minute scoping call. We confirm your situation, required filings, and send a tailored document list.

  2. 02

    Review

    We analyse your position, flag any cross-border risks, and confirm the scope and fee before any work starts.

  3. 03

    Prepare

    Draft returns and schedules are prepared with plain-English commentary on key positions for your review.

  4. 04

    File

    E-file with the IRS / FinCEN, send confirmations, and handle any follow-up notices or questions.

Pricing

Fixed fees — no surprises

Inbound C-Corp compliance package (Form 1120-F + withholding coordination): from £2,500 + VAT. W-8 onboarding for multiple foreign investors and branch-profits modelling are scoped separately.

FAQs

Common questions

Ready to get this filed?

Tell us your situation and we’ll confirm scope, a fixed fee, and the documents we need — usually within one business day.