Here's the short answer: the £100 government fee is barely the starting point. Once you factor in a registered UK address, banking setup, and the US-side tax reporting that comes with owning a foreign corporation, your real budget looks very different.
This guide breaks down UK formation and compliance costs, plus the extra layers that only apply when you're filing from across the Atlantic — currency conversion, remote banking, and US tax coordination.
TL;DR
- DIY filing runs about £100–£150; fully managed formation with tax registrations and cross-border support runs £150–£1,500+
- Registered UK address, VAT/PAYE, identity checks, and US foreign-corp filings drive most of the price gap
- Single-director holding companies with no active UK trading stay at the low end
- Spend more if you hire UK staff, trade actively, or need one advisor across HMRC and IRS rules
How Much Does It Cost to Form a UK Ltd Company From the USA? (Pricing Overview)
There's no single fixed price for this. Cost depends on whether you file yourself, hire a formation agent, or work with a full-service cross-border accountant.
US founders also face two friction points most general guides skip entirely: cross-border banking and US tax reporting on a foreign entity.
Three mistakes come up constantly among American founders budgeting for this:
- Assuming £100 is the total cost — it only covers the Companies House filing itself
- Forgetting the registered address requirement — PO boxes are no longer accepted, so this is a mandatory line item
- Ignoring the US-side accounting cost of owning a foreign corporation until tax season arrives
Those mistakes shape the real budget. Costs usually fall into one of three tiers:
Price Range 1 — DIY Direct With Companies House
Filing directly costs £100 online through Companies House, £124 by paper, or £156 for a same-day software filing. This gets you a name availability check, the IN01 filing, and your Certificate of Incorporation.
Best for: US founders comfortable self-filing a simple single-director structure who can arrange their own UK registered address.
Price Range 2 — Formation Agent Package
Formation agents bundle the government fee with a UK registered office address, director service address, identity verification support, and same-day filing. There's no single published market rate. Packages cost more than the raw government fee once a compliant address and verification support are included, and pricing varies by provider and bundle.
Best for: non-resident founders who need a compliant UK address but not ongoing accounting support.
Price Range 3 — Full-Service Cross-Border Accountant Package
This tier covers incorporation, the registered address, VAT and PAYE registration, and coordinated guidance across both HMRC and your US filing obligations.
This is the level of support firms like VJM Global provide for American business owners entering the UK market. It combines UK entity formation with the US tax analysis (foreign tax credits, filing category, entity structuring) that a UK-only formation agent typically won't touch.
Best for: US businesses building a genuine UK trading presence, or founders who want a single point of contact instead of juggling a UK formation agent and a separate US CPA.
Important caveat: All three ranges above cover UK-side incorporation only. None of them include US tax preparation, business banking fees, or currency conversion — those show up separately in your budget.
Key Factors That Affect the Cost
Your total spend depends on three things: which filing method you choose, how much ongoing UK compliance you need, and, uniquely for US-based founders, whether you're coordinating two tax systems instead of one.
Formation Method
DIY, formation agents, and accountants price this work very differently:
- DIY buys you the filing itself, nothing more
- Formation agents add a UK address and identity verification support
- Accountants add tax registrations and ongoing compliance planning
Each layer costs more because it removes a task from your plate.
Registered Office & Director Service Address
Every UK Ltd needs a physical UK address on the public register. This isn't optional. The Economic Crime and Corporate Transparency Act received Royal Assent in October 2023, and the operational ban on using PO boxes as a registered office took effect on 4 March 2024.
Virtual and registered address providers typically charge an annual fee for this service. That fee is separate from the director service address, a public-facing correspondence address that keeps your home address off the register.
VAT and PAYE Registration
VAT registration becomes mandatory once taxable turnover exceeds £90,000 over any rolling 12-month period. Below that threshold, registration is voluntary, and many B2B founders register anyway since a VAT number adds credibility with UK clients and suppliers.
PAYE registration is separate and only applies once you're paying UK staff. It must happen before your first payday, but no earlier than two months before that date.
US Tax Compliance Overlay
This is the piece most UK formation guides leave out entirely. If you're a US person who controls a foreign corporation, you likely fall into a filer category that triggers Form 5471 reporting, regardless of whether the UK company pays you a salary or dividend.
Cross-border tax firms cite CPA fees ranging from $1,500 for a basic filing to $5,000+ for complex cases involving CFC or GILTI analysis. This is a professional fee, not an IRS charge, but it's real money you need to budget every year the entity exists.
Banking and Currency Setup
Opening a UK business account remotely from the US adds its own friction. Wise explicitly supports US-based businesses applying for UK account details (a UK account number and sort code), typically for a one-time setup fee plus conversion fees starting around 0.24%.
Revolut's UK Business Basic plan includes a monthly fee and a monthly FX allowance, though eligibility for a UK Ltd owned by a US resident isn't guaranteed. Check directly before assuming approval. Either way, expect ongoing GBP/USD conversion costs on every cross-border payment.
Complete Cost Breakdown: One-Time vs Ongoing Costs
Running a UK Ltd from the US means tracking costs on both sides of the Atlantic: some hit once, others recur annually.
| Cost Item | Timing | What to Expect |
|---|---|---|
| Companies House registration | One-time | £100 online, £124 paper, £156 same-day |
| Formation agent or accountant fee | One-time | Ranges from a small filing fee to a full package quote |
| Registered office & director address | Recurring (annual) | Annual subscription, priced by provider |
| Confirmation Statement filing | Recurring (annual) | £50 online per 12-month period, plus any accountant prep fee (required even for dormant companies) |
| Annual accounts & Corporation Tax return | Recurring (annual) | Fee varies by transaction volume and complexity |
| US-side foreign-corporation reporting | Recurring (annual) | $1,500–$5,000+ CPA fee; late or missed filing risks steep IRS penalties |
| Banking & currency conversion | Recurring (ongoing) | Ongoing FX spread on every cross-border transfer |
The US-side reporting line needs extra weight in your budget. A missed or incomplete Form 5471 can trigger an initial $10,000 penalty, with another $10,000 every 30 days after IRS notice, capped at $50,000 per failure. That single line item can dwarf everything you spent on UK incorporation.
DIY vs Formation Agent vs Full-Service Accountant — Which Is Right for a US Founder?
The right choice depends less on price and more on how much cross-border complexity you're willing to manage yourself.
Control and effort required:
- DIY: full effort, no support, cheapest upfront
- Formation Agent: moderate support, but UK-side only
- Full-Service Accountant: minimal effort, coverage across both UK and US obligations
Handling of US tax coordination:
DIY filing and most UK formation agents don't touch US reporting requirements at all. That leaves you to find and pay a US CPA separately—often after the fact, once you realize Form 5471 applies.
Full-service cross-border firms such as VJM Global build UK incorporation and US tax positioning into the same engagement from day one. The firm has supported 500+ American business owners across formation and compliance work.
Long-term value for real UK operations:
If you're planning to hire UK staff, trade actively, or maintain a genuine UK presence, the higher upfront cost of full-service support usually pays for itself. Compliance risk (missed deadlines, penalty exposure, mismatched filings between HMRC and the IRS) tends to cost more than the advisory fee that would have prevented it.
Budgeting Tips for US Founders and Common Mistakes to Avoid
A realistic budget covers more than the cheapest formation fee. Plan for three cost buckets:
- UK incorporation (Companies House fee, registered address, formation support)
- Ongoing UK compliance (Confirmation Statement, accounts, Corporation Tax)
- US reporting obligations tied to your foreign company
Miss any bucket and the "cheap" setup gets expensive fast. These are the mistakes that drive that outcome:
- Treating the £100 Companies House fee as the total cost of ownership
- Skipping a compliant registered address, which risks a rejected filing
- Missing annual UK deadlines: Confirmation Statement, annual accounts, Corporation Tax return
- Ignoring US foreign-corporation reporting until tax season, when penalties may already apply
Cost varies by service level and how much cross-border complexity you manage. Spend for dual-side compliance, not the lowest day-one formation quote.
Frequently Asked Questions
How much does it cost to start a Ltd company in the UK?
The Companies House fee is £100 for standard online filing. With a formation agent or full-service accountant handling your registered address and tax registrations, total setup costs typically range from £150 to £1,500.
Can a foreigner open a UK company?
Yes. There's no UK residency requirement for directors or shareholders. You'll still need a compliant UK registered address and must complete identity verification, which can be done remotely with a passport.
Do I need to visit the UK to set up a UK Ltd company from the USA?
No. The entire process, including identity verification, can be completed remotely. Companies House accepts biometric passports from any country through its online verification system.
Can a US citizen be the sole director and shareholder of a UK Ltd company?
Yes. UK company law permits one person to hold both roles, owning 100% of the shares while also serving as the sole director.
Will I have to pay US taxes on my UK Ltd company's profits?
Often yes—US persons who own a foreign corporation generally face US tax and reporting obligations even if UK tax is already paid. Exact filings depend on ownership structure, so consult a cross-border tax advisor before your first deadline.
How long does it take to form a UK Ltd company from the USA?
Standard online filings are usually processed within 24 hours. Paper applications take longer, typically 8-10 days.
