
Important Tax Deadlines & Events (Updated For 2025)
It is crucial to stay on top of key tax dates to keep your financial affairs in order. Here’s a friendly reminder of the important tax deadlines this year.
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It is crucial to stay on top of key tax dates to keep your financial affairs in order. Here’s a friendly reminder of the important tax deadlines this year.

Discover the suggested reimbursement rates for employees’ private mileage using their company car.

Now is the perfect time to review your finances and make sure you’re making the most of available tax reliefs and allowances.

It is that time of year again for staff parties and annual functions, so it is important to make sure you record it properly.

The Autumn Budget 2024 signalled some significant changes on the way for families, landowners and business owners. From 6 April 2026

Making Tax Digital for Income Tax is being rolled out, and HMRC has now published guidance explaining how individuals who cannot use digital systems can apply for an exemption

In the last edition, we outlined HMRC’s Advisory Fuel Rates (AFRs) from 1 September 2025. One update worth noting is that there are now two separate rates for fully electric company cars, depending on where the vehicle is charged.

In a recent Upper Tribunal (UT) decision — Investment and Securities Trust Limited v HMRC — the taxpayer achieved a partial success. The case concerned whether a company was entitled to relief from the Annual Tax on Enveloped Dwellings

We’re in full Budget season, and speculation will swirl until 26 November 2025. One rumour currently causing concern is whether the Government might cut or remove the 25% tax-free pension lump sum.

The Chancellor is set to deliver the Autumn Budget 2025 on 26 November, and this one is shaping up to be significant. With the government facing ongoing fiscal challenges, we may see further tax rises aimed at tackling the public finance deficit.

A recent First Tier Tribunal case, Charlotte MacDonald v HMRC, has highlighted the importance of demonstrating that a trade is carried on with a genuine intention to make a profit. The taxpayer was denied sideways loss relief for losses arising from the organisation of an annual ‘woodland shoot’ on an estate.

Umbrella companies have recently come under renewed scrutiny. In June 2025, HMRC released Spotlight 71: Warning for agency workers and contractors who are moved between umbrella companies

HMRC withdrew Form VAT652 (Error Correction) on 8 September 2025. This form was previously used to notify HMRC of VAT return errors that could not be corrected on the next VAT return.

We are delighted to announce that we will now be able to support business funding solutions through our partnership with Swoop Funding. Through Swoop, we can now compare and tailor solutions across:

HMRC has issued a fresh warning to property buyers about misleading Stamp Duty Land Tax (SDLT) repayment claims.

Individuals born before 22 September 1959 and living in England, Wales or Northern Ireland are likely to be entitled to a Winter Fuel Payment

Retailers who sell kitchens, bathrooms, or flooring often work with third-party contractors to provide fitting services. While this may seem straightforward, HMRC is increasingly challenging these arrangements when it comes to VAT.

Artificial Intelligence (AI) is transforming the way we work and live. But a recent Upper Tribunal case, HMRC v Marc Gunnarsson, has highlighted the risks of relying on AI without proper checks.

The Department for Business and Trade (DBT) has confirmed that major reforms to Statutory Sick Pay (SSP) will take effect from April 2026. These changes are designed to improve employee rights but will also increase costs for many employers.

HMRC will be running a digital campaign aimed at encouraging accurate private use adjustments of business expenses that are reported via Self Assessment returns.

The government has now published draft legislation to reform Agricultural Property Relief (APR) and Business Property Relief (BPR) from 6 April 2026 – changes first announced in the Autumn Budget 2024. The aim, according to the Treasury, is to make the reliefs “fairer and more sustainable”.

On 21 July 2025, HMRC launched its Transformation Roadmap – an ambitious plan to become a digital-first organisation by 2030, with 90% of customer interactions taking place online. Right now, that figure sits at around 76%, so the next few years will see a big push to move services

HMRC is pressing ahead with Making Tax Digital (MTD) for Income Tax – and the clock is ticking. From 6 April 2026, the first wave of taxpayers will be brought into the new system, and while a few tweaks have been announced, the core rules remain the same.

Every year, HM Treasury uses ‘Legislation Day’ to outline changes that could shape the financial future of UK businesses. This year, on 21 July 2025, the announcements focused on three main areas: closing tax loopholes, modernising systems, and making tax policy “fairer.”

HMRC has flagged an issue affecting some Self Assessment taxpayers for the 2024/25 tax year in relation to Class 2 National Insurance contributions (NICs).