Blogs
Explore expert insights on UK tax, accounting, and business finance. Read practical guides for freelancers, landlords, and small businesses from CoreAdviz Accountants.
Dormant Company
Dormant Company UK – What It Is, How It Works & Key Obligations
April 02, 2026
A dormant company is a UK-registered legal entity that has no significant accounting transactions or trading activity during a given period. Whether you are considering registering a dormant company to protect a brand name, pause operations during an economic downturn or hold assets through an SPV structure, understanding the rules that govern a dormant company… View Article
Read MoreTax and Accounting
Green Accounting: Tracking Your Company’s Environmental Impact UK
April 01, 2026
In the 21st century, just making profit is not sufficient for businesses. They need to be responsible towards the environment because not only customers but investors and regulators now want the same. Green accounting is the practice of measuring and reporting your business’s environmental impact alongside its financial performance. As customers, investors and UK regulators… View Article
Read MoreIncome Tax
Advantages & Disadvantages of PAYE for Employees: What You Need to Know
March 24, 2026
Understanding PAYE for employees is essential in 2025–2026. The Pay As You Earn system has been the UK’s primary method of collecting Income Tax and National Insurance since 1944. With HMRC rolling out significant changes, both employees and employers need to understand how PAYE works, what’s changing, and what it means for take-home pay. What… View Article
Read MoreTax and Accounting
Do I Need to File a UK Tax Return if I’m Not Self-Employed?
March 22, 2026
Many individuals in the UK assume they don’t need to submit a tax return because they are not self-employed, working full-time or part-time at their employer and salary is already taxed (deducted) through payroll via PAYE every month. While this is true in most cases if you are looking only at one sided aspect. But… View Article
Read MoreBusiness Tax
Tax Relief on Electric Cars UK for Self-Employed: 2026 Guide
March 19, 2026
If you’re self-employed and considering going electric, understanding tax relief on electric cars UK for self-employed individuals is essential. HMRC offers significant tax advantages, from 100% First Year Allowances to low Benefit-in-Kind rates, that can meaningfully reduce your tax bill. This guide covers every relief available in 2026 and the key changes ahead, including the… View Article
Read MoreIncome Tax
What Is Marginal Tax Rate in the UK? A Complete Guide (2025–26)
March 17, 2026
Are you a UK taxpayer experiencing difficulty in navigating the complex tax landscape? Are you engaging in frequent tax discussions with your friends and colleagues? Understanding what is marginal tax rate is essential for every UK taxpayer — whether you’re employed, self-employed, or a landlord. If you’ve ever wondered why a pay rise left you… View Article
Read MoreSelf Employed
Self Employed Mileage Allowance vs Vehicle Expenses – Which Should You Claim?
March 14, 2026
Understanding the self employed mileage allowance is essential for any sole trader or business owner who uses a vehicle for work. Whether you drive your own car or a company vehicle, choosing between the HMRC approved mileage rate and claiming actual vehicle running costs can make a significant difference to your tax bill. This guide… View Article
Read MoreBusiness Tax
Business Expenses 2026 What You Can & Can’t Claim
March 14, 2026
Running a business in the UK is not an easy task. There are many financial responsibilities that a business owner needs to take. Business owner needs to understand which expenses are allowable for tax purposes and which not. As we move through 2025/26, HMRC continues to provide clear guidelines on what business expenses are deductible—and… View Article
Read MoreBusiness Tax
Business Mileage Or Car Expenses – What’s Claimable in 2026?
March 14, 2026
Running a business in the UK? If so then you must know which expenses you can claim for tax to save your money. One area that often confuses people is business mileage and car expense. As HMRC rules change and work patterns shift in 2025/26, understanding the business mileage and car expenses details has become… View Article
Read MoreTax Saving
Self-Employed Car Lease Tax Deduction UK: What Sole Traders Can Claim in 2026
March 13, 2026
Self employed car lease tax deduction UK guide. Learn how sole traders can claim lease payments, mileage, capital allowances and reduce tax legally.
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