UK Company Setup Pack · May 2026
Set up your UK company
correctly.
The first time.
From sole trader or limited company? to your first invoice — every step, in the right order, with nothing missing.
Covers the new 2026 rules: doubled Companies House fees, mandatory ECCTA identity verification, and the full compliance calendar — with 30+ real-world Q&A scenarios.
✅ Reflects 2026 Companies House rules
📄 33 pages · instant PDF download
🔒 One-time payment
Two Major 2026 Rule Changes
⚠ New for 2026 — Know Before You File
Both in force now
Companies House fee doubles + mandatory identity verification · Covered in full
£100
New online incorporation fee · was £50 · from Feb 2026
ECCTA
Mandatory identity verification for all new directors · Nov 2025
£35K
Profit crossover where Ltd company beats sole trader on tax
30+
Real-world Q&A scenarios covering every formation edge case
⚠ Rule Change Alert
Companies House fees doubled 1 February 2026 · Identity verification mandatory since November 2025
This guide covers both changes in full
Get the setup guide →
Who Needs This Guide
If you’re about to form a UK company,
read this first.
Getting formation wrong creates problems that cost far more to fix than they cost to avoid. This guide is for anyone starting from scratch — or starting again properly.
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First-time founders
You’ve decided to start a business and need to know whether to go sole trader or limited company — and exactly what to do next, in the right order.
Most common use case
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Sole traders going limited
You’ve been operating as a sole trader and your income has grown past the crossover point where a limited company makes tax sense. Time to do this properly.
Tax crossover: ~£35K profit
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International founders in the UK
You’ve relocated to the UK or want a UK company base. The ECCTA identity verification and banking setup sections are especially relevant for your situation.
ECCTA covered in full
⚠️ Most formation mistakes are made in the first 90 days. Wrong company name, home address on the public register, Corporation Tax registered late, personal and company finances mixed. This guide covers every one of them — before they happen.
Why Most Founders Get This Wrong
Three mistakes that
cost real money to fix.
Mistake 01
Using a home address as the registered office
The Companies House register is fully public and searchable worldwide. Your full home address — house number included — appears on every document filed while it was your registered office. It cannot be removed from historical filings. A virtual address costs from £20/year. Most founders only discover this problem after the fact.
Mistake 02
Registering for Corporation Tax too late — or not at all
You must register within 3 months of starting to trade — not 3 months from incorporation. The clock starts from first business activity. HMRC issues automatic penalties for late registration regardless of whether any tax is owed. This is one of the most commonly missed deadlines for new limited companies.
Mistake 03
Skipping identity verification under ECCTA
Since November 2025, every director and Person with Significant Control (PSC) must verify their identity via GOV.UK One Login before appointment. Existing companies have a 12-month transition window — which may have already passed if your Confirmation Statement is due soon. Missing it blocks your ability to file.
What Founders Actually Ask
The questions
no one gives you a straight answer on.
My profit is £38K. Should I go sole trader or limited?
Depends on accountancy costs — and we give you the exact crossover calculation. Section 1 — full decision framework.
I want to use my home address but keep it private. Can I?
No — but there is a £20/year solution. Section 2 — registered office options explained.
My co-director is overseas. Can they still be a director?
Yes — but ECCTA verification works differently for non-UK nationals. Section 4 — full identity verification guide.
Can I use my personal bank account at the start?
Not as a limited company — and this is more serious than most people realise. Section 5 — banking setup from day one.
My first year will be a loss. Do I still need to file a CT600?
Yes. Every year. Regardless of profit or loss. Section 6 — full compliance calendar and annual obligations.
Inside the Guide
33 pages. Eight sections.
Formation to first invoice.
Written for founders — not lawyers. No jargon. No generic advice. Just the exact steps, in the right order, with the 2026 rules built in.
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Section 1 — Sole Trader vs Ltd: The Decision Framework
Side-by-side comparison across 12 criteria. The tax crossover table at £25K–£100K profit. The accountancy cost reality check. When Ltd is clearly right — and when it isn’t yet.
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Section 2 — What You Need Before You Register
Company name rules and availability checks. Registered office options and home address risk. Share structure decisions. Everything to gather before you open the application form.
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Section 3 — Step-by-Step Formation Guide
Companies House direct vs formation agent. The £100 fee (from Feb 2026). Exactly what to enter on each field. What to do the moment your Certificate of Incorporation arrives.
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Section 4 — ECCTA Identity Verification (New 2025/26)
Who must verify and when. GOV.UK One Login step-by-step. Options for overseas directors. The transition deadline for existing companies. What happens if you miss it.
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Section 5 — Post-Formation: HMRC, Banking & Accounting Setup
Corporation Tax registration timeline. Business bank account options. Accounting software setup and bank feed connection. PAYE registration. VAT threshold and registration. First invoice legal requirements.
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Section 6 — Compliance Calendar & Annual Costs
Every annual filing deadline mapped: Confirmation Statement, Annual Accounts, CT600, Corporation Tax payment, Self Assessment. Annual cost estimates for accountancy, registered office, and filing fees.
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Section 7 — 30+ Real-World Q&A Scenarios
IT contractors and IR35. Overseas co-directors. 50/50 share splits. Moving from sole trader to Ltd. Using a personal bank account. First-year losses. Missed Confirmation Statements — and more.
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Section 8 — Your Complete Formation Checklist
Four phases: Before You File, After Your Certificate, First 90 Days, and Annual Recurring. Critical items flagged. Sequence-ordered so nothing gets missed and nothing gets done twice.
Sample Q&A — Real Questions, Real Answers
These are the questions
UK founders are actually asking.
Two Q&As from the guide — free to read. Thirty more are inside.
I’m a freelance designer earning £38,000/year. My accountant charges £600 for my sole trader return. Is it worth switching to a limited company?
At £38,000 profit, the tax saving from a Ltd structure is approximately £1,500–2,000/year. But your accountancy cost will increase to roughly £1,500–2,000 — replacing the £600 sole trader cost. Net saving: probably £0–500/year at this income level. The calculation improves significantly as income rises. If you expect to break £50,000 within 2 years, incorporate now and build the systems early. If you will stay around £38,000, sole trader status remains more cost-efficient.
Can I use my personal bank account for company transactions, at least initially?
Not as a limited company. A limited company is a separate legal entity, and mixing its finances with your personal account is a serious compliance problem. It makes accounting substantially harder, creates confusion about what constitutes company vs personal income, and looks very poor in an HMRC compliance review. Open a dedicated business account on the same day you receive your Certificate of Incorporation. Several options are free — including Starling Bank and Monzo Business.
I’m an IT contractor. Everyone tells me I need a limited company. Is that true?
A limited company was historically standard for IT contractors because of salary-plus-dividends tax efficiency. However, IR35 is the critical factor. If your contracts are inside IR35, the tax advantage of a Ltd structure is largely eliminated. Check your IR35 status for each contract before deciding.
My business partner and I are forming a company 50/50. Do we actually need a Shareholders’ Agreement?
Yes — and this is not optional advice dressed up as optional. A 50/50 split creates genuine deadlock risk — two equal shareholders can block any decision the other wants to make. A Shareholders’ Agreement should include drag-along and tag-along rights, good leaver/bad leaver provisions, and a deadlock mechanism.
💬 30+ more Q&A scenarios inside the guide
Covers: sole traders · IT contractors · overseas directors · 50/50 splits · banking setup · IR35 · Corporation Tax · identity verification · and more
Get the Full Guide — £99 →
🏛️
Based on Companies House & HMRC guidance
gov.uk · ECCTA 2023 · Finance Acts
📅
Updated May 2026
Includes Feb 2026 fee changes & ECCTA verification
📄
33 pages
Instant PDF download
💬
30+ real scenarios
Questions UK founders are actually asking
🇬🇧
UK-specific
Written for UK company formation in 2026
Get Your Copy
Everything you need to set up
your UK company correctly.
One payment. Instant download. No subscription. No solicitor’s hourly rate.
£99
One-time payment · Instant PDF download · No subscription
- ✓ 33-page formation guide — updated May 2026
- ✓ Section 1: Sole trader vs Ltd decision framework with tax crossover table
- ✓ Section 2: Everything to prepare before you file — name, address, shares
- ✓ Section 3: Step-by-step Companies House formation guide
- ✓ Section 4: ECCTA identity verification — new 2025/26 requirement in full
- ✓ Section 5: HMRC registration, banking, accounting and invoicing setup
- ✓ Section 6: Full compliance calendar and annual costs
- ✓ Section 7: 30+ real-world Q&A covering every formation edge case
- ✓ Section 8: Complete formation checklist — Before, During, After, and Annual
Get Instant Access — £99
🔒 Secure payment via Stripe · PDF delivered instantly to your inbox · Reflects May 2026 Companies House & HMRC rules
💡 One hour with a solicitor costs £200–400. This guide answers what you’d ask in that hour — and the questions you didn’t know to ask — for £99.
Questions About This Guide
Before you buy
Does this cover the new 2026 Companies House rules?
Yes — in full. The guide reflects both major 2026 changes: the Companies House fee increase (online incorporation from £50 to £100, Confirmation Statement from £34 to £50 — effective 1 February 2026), and the mandatory ECCTA identity verification requirement for all directors and PSCs (in force since 18 November 2025). Both are covered with step-by-step guidance, not just mentioned in passing.
I’m not sure whether to go sole trader or limited company. Will this help me decide?
Yes — this is the first thing the guide covers. Section 1 includes a 12-criteria side-by-side comparison, a tax crossover table at five income levels from £25K to £100K, and the accountancy cost reality check that most “should I incorporate?” articles conveniently omit. If you’re still unsure after Section 1, the Q&A in Section 7 covers the most common borderline situations including freelancers, IT contractors, and sole traders approaching the crossover point.
How do I receive the guide after purchasing?
Instantly. After your payment is processed via Stripe, you will receive a download link automatically — both on the order confirmation page and in your purchase receipt email. The guide is a PDF, readable on any device. No account required to download.
Is this a replacement for legal or accountancy advice?
No, and it doesn’t claim to be. The guide covers the process, rules, and decisions involved in UK company formation — it is an information resource, not professional advice. For complex situations (multi-founder disputes, pre-existing IP transfer, regulated industries, overseas structures), you should seek qualified legal or accountancy advice. The guide helps you arrive at those conversations better prepared and with better questions.
What if the rules change after I buy?
ThriveOnz360 will update the guide if Companies House or HMRC makes material changes to formation rules, fees, or identity verification requirements. Updates will be made available to existing purchasers. The guide includes the version date and official source references so you can always verify against current GOV.UK guidance.
Set Up Correctly. First Time.
33 pages. 30+ scenarios.
Every step covered.
From the sole trader vs limited decision to your first invoice — in the right order, with the 2026 rules built in.
Instant PDF download · Secure payment via Stripe · Updated May 2026
Disclaimer: This guide is published by ThriveOnz360 for general information purposes only. It is not legal advice, tax advice, or professional financial guidance. Information reflects Companies House and HMRC guidance at time of publication (May 2026) and is subject to change. Always verify against current GOV.UK guidance before taking action. ThriveOnz360 accepts no liability for decisions made in reliance on this guide. · © 2026 ThriveOnz360. All rights reserved. · Privacy Policy · Terms