September 2025 Tax & Business Update

Are you looking for valuable insights into the latest trends in business and accounting? Look no further! Our monthly business and accounting newsletter is a must-read for all business owners and professionals. But that’s not all – our FULL newsletter contains even more exclusive content, including expert advice on tax planning, bookkeeping, and financial management. Don’t miss out on this valuable resource. Simply click on the newsletter icon in the top right of the menu and fill in your details to receive our monthly newsletter straight to your inbox. Stay ahead of the competition with our expert insights and analysis!

Our September 2025 Tax Tips & News is packed with essential updates to help you stay informed and proactive.

What’s Inside This Month:

“10p Tax” Proposal from Billionaire John Caudwell

Phones 4U founder John Caudwell has called on Chancellor Rachel Reeves to introduce a 10p-per-litre tax on petrol and diesel, estimating potential Treasury revenues of around £20 billion. He argues that thanks to reduced fuel prices—now among the lowest in real terms over two decades—this is a more strategic move than increasing taxes on vital sectors like agriculture.

UK’s Most Notorious Tax Defaulters Revealed

Since 2015, HMRC has publicly identified over 4,000 deliberate tax defaulters with total penalties exceeding £1.5 billion. Predominant sectors include hospitality (21%), construction & trades (19%), recruitment/payroll (notably among the top 10 defaulters), haulage & freight, and metals & recycling—particularly in Yorkshire. Civil-only penalties are listed; criminal cases remain excluded.

Potential Property Tax Reform: Stamp Duty Replacement?

The Chancellor is evaluating a new proportional property tax to replace Stamp Duty for owner-occupied homes over £500,000—with possible regional adjustments. Implementation may require a second Labour term, and the reform aims to tackle wealth inequality and adjust to soaring property values.

Major Vehicle Tax Change Impacts Double-Cab Pick-Up Owners

From April 2025, HMRC reclassified double-cab pick-up trucks as cars rather than commercial vehicles. This means taxation is now based on CO₂ emissions. For instance, a Ford Ranger Wildtrak owned by someone in the 40% tax bracket could face a staggering 400%+ increase in Benefit-in-Kind (BiK) tax—from £1,608 to an eye-watering £8,322 annually.

September Tax FAQs Answered

• Q: Do under-18s need to pay tax on summer earnings?
  A: Yes—minors are subject to tax and National Insurance if earnings exceed £12,570 or £242/week (for ages 16+), with minimum wage and hour restrictions depending on age and region.

• Q: Is inheritance tax relief available for cohabiting partners?
  A: Unfortunately not. Only married couples and civil partners benefit from Spousal Relief and transferable nil-rate bands. Cohabitees may face substantial Inheritance Tax (IHT).

• Q: What is Form 17 for rental income tax optimization?
  A: It allows married couples or civil partners, co-owning a property as tenants in common, to allocate rental income unevenly for tax benefit—only if not using furnished holiday letting and structured correctly.

September Key Tax Dates

• 1st – Corporation tax payments for year-ends 30 November.

• 19th – Employer Payment Summary (EPS) deadline and postal payment deadline for PAYE (August).

• 22nd – Electronic PAYE payment deadline (August).

• 30th – CT600 Corporation Tax Return deadline for year-ends 30 September.

Why This Matters to You

Staying informed on these developments empowers you to make smart financial moves and tax-saving decisions. From legislative threats to planning opportunities, our newsletter highlights what matters most.

If you have questions about how any of these topics apply to your circumstances—or if you’d like assistance navigating them—don’t hesitate to reach out. We’re here to help.