If you are thinking about setting up a limited company, the first thing most people ask is simple:
“How much will it actually cost me?”
The honest answer is this: The incorporation fee is the cheapest part. The real cost sits in compliance, tax, and making sure you set it up properly from day one.
Let’s break it down properly so you understand both the visible and hidden costs, especially under current HMRC and Companies House legislation.
1. The Basic Incorporation Cost
To register a private limited company with Companies House, there is a standard online fee, depending on how you file and the circumstances of the business.
Once registered, you receive:
- A Certificate of Incorporation
- A unique company number
- Legal status as a separate entity from you personally
You can also appoint an agent or accountant to handle the formation. This typically costs between £200 and £500, plus the Companies House fee, depending on what’s is included.
A professional formation service usually covers:
- Drafting or tailoring the Articles of Association
- Structuring and issuing shares correctly
- Setting up the PSC register
- Completing the director identity verification process
This ensures the company is not just registered but structured correctly from day one.
2. Professional Setup Support
Many directors register a company quickly, only to discover later that important decisions were made without proper thought. Common early mistakes include:
- The wrong share structure, which creates problems when bringing in investors or paying dividends
- An incorrect SIC code that does not reflect the real business activity
- No clear strategy for handling the director’s loan account
- No planning around salary versus dividends
- No understanding of when Corporation Tax becomes payable
These are not small admin errors. They affect tax, cash flow and legal compliance.
Correcting them later often involves restructuring shares, filing amendments, or dealing with unexpected tax consequences. The cost of fixing the issue is usually higher than getting it right at the start.
Professional formation support, combined with proper tax planning, typically ranges from £250 to £750 depending on complexity. Where there are multiple shareholders, different share classes or group companies, the cost will be higher.
Early advice is not an extra expense. It is protection against avoidable and often expensive corrections later.
3. Corporation Tax (CTA) – What You Need to Budget For
Once your company is trading, it becomes liable for Corporation Tax.
You must register for Corporation Tax with HM Revenue & Customs within 3 months of starting to trade.
The current Corporation Tax rates are:
- 19% for profits up to £50,000
- 25% for profits over £250,000
- Marginal relief in between
This means if your company makes £80,000 profit, you will not simply pay 19%. You move into marginal relief territory and need proper calculation.
The tax itself is not the “cost of starting”, but it becomes a cash commitment very quickly.
Corporation Tax is due 9 months and 1 day after your year-end. Miss that deadline and interest starts accruing automatically.
Many new directors underestimate this timing and find themselves under pressure in year one.
4. Ongoing Compliance Costs
This is where reality sets in.
A limited company must file:
- Annual accounts to Companies House
- A Corporation Tax return (CT600) to HMRC
- Confirmation statement annually
- Payroll submissions if paying salary
- Dividend documentation
- Director loan account tracking
Typical annual accountancy fees range from:
- £900 to £2,500 for small companies, assuming the bookkeeping is organised and records are ready to work from. Many small business owners still hand over a box of mixed receipts at year end, which increases time and cost.
- Higher if VAT, payroll, multiple directors, or complex transactions are involved
Trying to “save money” by filing yourself often results in incorrect submissions, especially around director loan accounts and Corporation Tax adjustments.
Once errors hit HMRC’s system, then trouble starts and correcting with HMRC even dealing with HMRC directly is not that simple.
5. Hidden Costs Most People Don’t Consider
There are additional costs you need to factor in:
- Registered office service if you don’t use your home address
- Accounting software subscription (£15–£40 per month)
- Payroll software or bureau fees
- VAT registration if turnover exceeds £90,000
- Professional indemnity if required in your sector
Virtual Finance Office – Skynet Accounting – Accountants For Manufacturing & Engineering
Then there are the risks.
Late filing penalties from Companies House start at £150 and increase rapidly. Corporation Tax penalties escalate if returns are late or incorrect.
Not filing your accounts and confirmation statement is criminal offence in the UK. Directors or LLP designated members could be personally fined for this in the criminal courts.
The cost of non-compliance can easily exceed the cost of proper support.
6. So What Is the Real First-Year Cost?
Let’s look at a realistic small business example:
- Incorporation statutory fee: £100-£200
- Professional setup: £200-£500 without complexity plus incorporation statutory fee
- Accounting software: Approx £300 per year
- Annual accounts and Corporation Tax: £900-£2500 assuming records are organised and not delivered in a box of mixed paperwork
- Confirmation statement: £50 online if you do it yourself
The incorporation and setup costs are one-off.
The ongoing compliance costs are where you need to budget properly.
In reality, you are likely looking at between £1,000 and £3,000 in year one to run a compliant limited company correctly. The exact figure depends on turnover, transaction volume, VAT registration, payroll, and the level of support you require.
That is the genuine entry cost of operating properly under UK legislation.
If someone tells you it only costs £50 to start a limited company, they are only referring to the registration fee. That is a fraction of the real financial commitment involved in running one responsibly.
7. Why Getting It Right Matters Now
Legislation is tightening.
Companies House identity verification requirements are increasing. Director transparency is under greater scrutiny. HMRC data sharing and digital monitoring continues to expand.
This is not the environment to “just try and see how it goes”.
A limited company is a separate legal entity. It protects you, but it also comes with responsibilities.
If you blur the lines between personal and company money, ignore director loan balances, or fail to plan for Corporation Tax, problems catch up in most unexpected way.
Final Thoughts
Running a Limited Company properly requires structure, discipline, and forward planning.
If you get it wrong, then it starts to cost.
If you are planning to incorporate or have recently set up and are unsure whether everything is structured correctly, now is the time to review it.
Do not wait until your first Corporation Tax bill lands or Companies House issues a penalty notice.
If you want clarity on the true cost of running your limited company and how to structure it tax-efficiently and compliantly from the start, get in touch today.
Book a Discover Call: https://calendly.com/skynet-skynetaccounting/new-meeting
Follow me on LinkedIn: www.linkedin.com/in/skynet-yesim-tilley
About the Author
Written by Yesim Tilley Founder of Skynet Accounting is a chartered accountant with over 20 years of experience supporting manufacturing and engineering businesses across the UK. Specialising in cost analysis, product costing, and financial strategy, she helps industrial businesses understand their numbers and make more profitable and sustainable decisions. Skynet Accounting provides tailored finance, compliance, and taxation support for business owners.