It was reported in the Financial Times that “Half a million law partners and sole traders face bigger tax bills next year”.

Whilst the article was aimed at law firms this is likely to affect all individuals who are self-employed, including members of partnerships and LLP’s who currently have accounting years which are not the same as the tax year.

What’s changed?

The change was one of the legislation day announcements released by HRMC on 20th July this year. The proposal is that all non-incorporated businesses will need to pay tax based on the ‘tax year’ rather than the ‘accounting year’ with effect from 2022/23 year.

What this means in practice is that for anyone who currently submits their tax returns based on accounts ending on a date other than the 31st March or 5th April, they will end up paying tax on their profits earlier than they have been doing. Many large partnerships prepare their accounts to the 30th April each year, so this change will bring forward the date of payment of tax on 11 months’ worth of profits.

There is currently a rather complicated method of assessing profits of unincorporated businesses in the opening and closing years of those businesses. In theory this should even out the effect of any change in the basis of assessment such as the one currently being proposed.

Impact on cash flow

However, in practice, where profits are continually rising there will be a significant impact on many businesses when this proposed change is bought in in 2022/23. Whilst ultimately this will only be a cash flow issue, as we all know, cash flow is king and such a cash flow shock could cause significant problems for some businesses.

The changes will also complicate matters for businesses who continue to run their accounting years to years other than the tax year. This is because the tax assessment will be based on a fraction of more than one year. For example, a business with an accounting year to the 30th April, will now need two sets of accounts to be prepare and finalised in order to complete their tax return. For the 2022/23 year their tax assessment will be based on 1 month of the year to April 2022 and 11 months of the year to April 2023. For this reason, many larger partnerships are considering whether it will be appropriate to change their accounting year to make it coterminous with the tax year end.

Bringing forward tax payment dates

This change of basis is being sold by HMRC to the public as a simplification as it does away with the necessity for the complicated opening and closing year rules. It also makes things simpler for the drive towards making tax digital, but the move towards bringing forward tax payment dates in general is part of an ongoing process. We have already seen the change to the taxation of capital gains on disposals of property which is now payable with 30 days of a sale rather than 10 months after the end of the tax year.

I anticipate we will see more moves in future from HMRC to bring forward tax payment dates to closer align payment with the receipt of income. In the meantime I encourage anyone with an unincorporated business and the year end which is not already aligned with the tax year to contact their accountants to discuss the potential impact of these proposed changes.


If profits of the partnership are now lower than they were in the early days of the business then it is possible that the change of basis period will result in the partner having partnership losses. Use of losses, and restrictions on the use of losses, is explored in the blog on partnership loss planning on that subject.


The information in this article was correct at the date it was first published.

However it is of a generic nature and cannot constitute advice. Specific advice should be sought before any action taken.

If you would like to discuss how this applies to you, we would be delighted to talk to you. Please make contact with the author on the details shown below.

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Richard Verge - Tax Director


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Richard is a personal tax expert and is able to advise high net worth individuals on either immediate tax concerns or a long term plan to ensure that their affairs are structured to take advantage of the tax reliefs available.

His experience from working with HMRC ensures that he is more than adept at understanding the view from the other side, to the benefit of his clients. Richard advises entrepreneurs, owners of family businesses and partners in professional practices and provides advice on planning from both a personal and worklife perspective.

One comment

  1.'Richard Verge

    The changes to the tax treatment of unincorporated businesses which were announced two years ago are finally taking effect. If you haven’t already done so I recommend you review how these will impact on you and your cash flow. The key point to note is that for all sole traders and partnerships who do not have an accounting year aligned with the tax year, the changes will bring forward the taxing point of your profits which is likely to have a negative effect on your cash flow. If you need help with this then please contact us.

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