Lawyer in law Firm

Starting a new law firm - what do I need to consider? Part III – Tax considerations


As specialist advisors to the legal sector, we have helped many firms to start practising.  In the last two editions, I covered the top considerations that individuals should take into account in starting a new law firm; the importance of planning; and the business structure of the firm.  In this edition, I look into some of the tax considerations to take into account.

Tax is very much an extension of the business structure option and will in many cases be a deciding factor on that structure choice.

Sole practitioner/partnership/limited liability partnership

On setting up, you will be treated by HM Revenue and Customs as becoming self employed, unless in a limited liability partnership you do not meet the self-employed criteria.  Assuming you do, you will be required to complete a self assessment tax return and will stop paying tax under Pay As You Earn, making only two payments of tax per year in January and July.

Your tax will be based on personal income tax rates and will be calculated with reference to your share of the firm’s tax adjusted profits, irrespective of how much you have drawn from the business.  This figure will not necessarily be the same as the profit per your accounts, as it will reflect adjustments for expenditure which has been deducted in the accounts but is not allowable for tax purposes, and also specific tax allowances such as capital allowances.

Once established, your tax will be based on your tax adjusted profit for the year ending in the year of assessment.  So, for example, your profit share in the accounts for the year ended 30 April 2017 will be declared on the 2017/18 Self Assessment Tax Return.  There are however special rules for commencement and cessation.

In the tax year in which you commence, you will be assessed on the profits arising from the date of your commencement to the following 5 April.  Thus, if the first period end is 30 April 2017 and you commence on 1 May 2016, in 2016/17 you will be assessed on the profits arising in the period 1 May 2016 to 5 April 2017.  Tax will be payable on those profits in January 2018.

You should note that there can be a considerable delay between the date on which you commence and the date on which your tax payment is due.  It is therefore important to make provision for this payment.

Special rules also apply to the second year of assessment, 2017/18 in the above example, which is based on the profits for the year ended 30 April 2017.  The tax in this respect will be payable in two payments on account in January and July 2018, based on your 2016/17 liability, with a balancing payment if required in January 2019.

There is usually an element of double counting of profits in the opening years of an equity partnership.  In the example above, profits for the period 1 May 2016 to 5 April 2016 have been assessed both in 2016/17 and 2017/18.  A calculation is therefore undertaken to quantify the profits assessed twice and this is called ‘overlap profit’.  This is carried forward until your retirement, the partnership ceases or the year end changes when it is deducted from the profits assessable in the tax year of change.

Limited company

Limited companies pay tax at the corporation tax rate on the tax adjusted profits of the company.  The tax adjustments are similar to the sole practitioner/partnership/limited liability partnership section above.  The profits assessed to tax are after salaries have been deducted, but before dividends have been declared.

As an owner of the company, you will not be self employed.  You will also be taxed on the amounts you withdraw from the company.  If by salary, this will be at the same rates as self-employed section above.  If by dividend, it will most likely be at lower tax rates, but these rates have recently increased.

It may be possible to start as a sole practitioner/partnership/limited liability partnership and then later incorporate to become a limited company.  In that situation, it may be possible to justify a goodwill value of the firm and sell that goodwill to the company for a lower effective tax rate.  This is a complex situation, with other tax implications, and there have been many changes to the treatment of this in recent years; advice is therefore required if you consider this option.

Rates of tax

The current rates of income tax are higher than corporate rates.  Corporate rates are currently 20%, but are due to reduce to 17% in the next few years.  If removing all profits from a company, and thus being charged on the method of extraction, the tax saving generated in the company structure may be taken away.   The overall difference is dependent on the amount of profits earned and withdrawn.  It may be possible to leave money in companies until they are liquidated or until your shares are sold, and in those circumstances the rate of tax on the balance remaining in the company could reduce to 10%, making it more attractive to use a company.

This article is very much a high level overview.  This can be a complex area and advice should be sought from a specialist accountant on which route is best for you.

In the next and final edition, I will address the application/registration process with the SRA.

Andy Poole is the Legal Sector Partner at Armstrong Watson, specialising exclusively in advising law firms. Co-author of the Law Society toolkit on Financial Stability in Law Firms, Andy heads the legal sector team at Armstrong Watson, which has 17 offices and over 400 people. The legal sector team advises law firms throughout the UK on strategic, structural and other business improvement issues as well as providing efficient accounting, tax and SRA accounts rules services.  Further information can be found at:

This article is a general guide to the issues that we see in practice. It is not a substitute for professional advice which takes account of your personal circumstances. No responsibility can be accepted for any loss occasioned by any person acting or refraining from action on the basis of this article.

The Law Society has exclusively chosen to work with Armstrong Watson for the provision of accountancy services to law firms.  

Tax can be a complex area. Our dedicated legal sector team can help you right from the start. To benefit from our experience contact our legal sector team today.