If you decide to contract through your own limited company, you’ll need to engage an accountancy firm to handle your tax and accounting requirements, unless you’re confident in doing it yourself.
A contractor accountant will handle company formation, registering your company for tax, processing your payroll, preparing accounts, and dealing with HMRC. Most charge a fixed monthly fee, with core services covering essential filings and ongoing support. You may pay extra fees for things like contract reviews, providing references and possibly catch-up fees if you’ve moved providers.
Most specialist firms charge a monthly fee to maintain a contractor’s books.
Based on our recent analysis of the leading firms’ current prices, a contractor accountant can cost between £75 and over £200 + VAT per month.
Many leading firms have different levels of service (tiers) which are priced accordingly.
From our experience, the “gold” or “VIP” packages offered by some firms often include add-ons that aren’t essential, including business insurance, “free” IR35 reviews, and similar extras.
This isn’t to say that many of these extras aren’t useful or worthwhile—particularly for first-timers. However, seasoned contractors and small company owners should be fine with just ‘core’ features.
In practice, most contractor accountants offer very similar core services. The main differences tend to be the level of support, responsiveness, and the amount of bookkeeping or tax planning included in the monthly fee.
Although the cost of an accountant varies considerably, there are a number of core responsibilities that all accountants should carry out for their clients.
Here, we look at the initial (start-up) duties, ongoing responsibilities, and some add-on extras that you might need.
Start-up accountancy tasks
When you first sign up with a new accountant – many do so before forming a company – there are some initial start-up tasks which need to be carried out.
Many firms will set you up as a new client for free (including company formation), although others charge a fee for such things.
It is best to check before you sign up to find out exactly what is included.
Here are the key start-up tasks:
Company formation
It is surprisingly simple to set up a company these days. In fact, you can do it yourself for a relatively small fee via Companies House.
However, the terminology and the entire incorporation process may seem unfamiliar to many new contractors.
As a result, hiring an accountant or formation agent to handle this task often makes sense, especially if there are no associated costs for new clients.
Make sure you have the required information to hand so that your accountant can incorporate your company.
Read our 10 company formation steps to get an idea of what information is required for successful incorporation.
Registering your new company with HMRC
Your accountant acts as your ‘agent’ with HMRC. Once you have authorised them to act on your behalf, they can register your company for the following taxes:
- Corporation Tax – which is payable on company profits.
- Value Added Tax (VAT) – charged on all sales your company makes – mandatory if your turnover exceeds £90,000.
- Employment Taxes – you will be registered as an employer. You need to make deductions from salaries for National Insurance and income tax – which are payable to HMRC (usually monthly, or quarterly for smaller employers).
Payroll
Your accountant will create a new payroll for your company. This will enable you to pay yourself and any employees a salary. Payroll data is sent to HMRC automatically via RTI.
Accounting software
Your accountant will typically offer you a choice of online accounting software – such as FreeAgent or Xero. These excellent systems have made life much easier for both accountants and their clients.
You can invoice clients directly, link up your bank account, run your payroll, submit VAT returns, and view your tax position instantly with the market-leading software providers.
We’ve used FreeAgent for over a decade and strongly recommend it. It seems to be the package of choice for most contractor accountants.
Find out if your accountant provides a user account for free (included in the monthly fee), or if the service is chargeable.
Business bank account
As a limited company is a separate legal entity from its owners, you must set up a separate business bank account. Your accountant will happily do this on your behalf, or you can set one up yourself. Find out more here
What core ongoing tasks do accountants undertake?
- Run monthly payroll for one employee (typically the contractor). You may be charged an extra annual fee if you have further employees.
- Submission of payroll data to HMRC.
- Deal with Companies House correspondence, including completing your company’s Confirmation Statement. In a minority of cases, you may be charged the £50 fee separately.
- Deal with all HMRC-related correspondence, such as changes to your personal tax code or tax-related queries.
- Completion of your company’s quarterly VAT returns.
- Completion of your company’s annual accounts (which are sent to HMRC and Companies House).
- Completion of CT600 (annual Corporation Tax return).
- Tax planning advice (usually included, though the depth of specific tax advice varies).
- Answering any day-to-day questions you may have relating to your tax affairs.
Some of our partner accountants
| Accountant | Cost | Key Features |
|---|---|---|
| Aardvark Accounting | £89 | Free company formation + FreeAgent. |
| Integro Accounting | £125 | EasySwitch between limited and umbrella. |
| Clever Accounts | £104.50 | Free company formation + IR35 FLEX solution – for any contract. |
| SG Accounting | £119 | Free company formation + free tax return. |
| You can compare the monthly fees of over 30 accountants here. | ||
Additional services offered by accountants
Most accountants offer a variety of bolt-on services in addition to the core tasks listed above—some are ‘free’, and others may cost extra.
- IR35 contract reviews (providing an opinion on the IR35 status of your contract, or providing access to a third party professional IR35 contract review service).
- Bookkeeping – with most firms now offering some type of online accounting (either bespoke or a commercial system), entering details of your everyday transactions may be charged as an optional extra if you do not do this yourself.
- Completion of your personal tax return (as a ‘free’ service, as you cannot reclaim the cost of this personal service against your company’s Corporation Tax bill).
- Provision of a registered office address for your company. This means that all official paperwork (from Companies House and HMRC) goes straight to your accountant, rather than your home address.
- Providing a service address for directors and other company personnel, so that your residential address doesn’t appear on the public record.
- Provide accountancy references for letting agencies/mortgage companies (sometimes chargeable).
- In most cases, you will be assigned a dedicated contractor accountant and a single point of contact. However, where several fee packages are available, this may not always be the case, so check first before signing up.
- Financial services, including mortgage/pension advice. Some firms, especially larger ones, have their own in-house IFA firms, whereas others can refer you to partner firms.
Top contractor accountants
- SG Accounting – First 3 months half price (£59.50 per month)
- Bright Ideas Accountancy – 5 stars on Google, from £109 per month
- Clever Accounts – IR35 FLEX. Take on any contract type
- Aardvark Accounting – Complete service from £89 per month
- Integro Accounting – Fixed fee – 6 months half price
We've worked with all of these firms for over 8 years. Always check current pricing and service details before signing up.

