Do non-residents pay UK inheritance tax? Yes. Non-residents always pay UK inheritance tax (IHT) on UK-situated assets like property, shares, and bank …
Specialist UK Corporation Tax Services
Corporation Tax is a flat rate tax paid by UK limited companies on their annual profits. As of 2026, the main rate is 25% for profits over £250,000 and the small profits rate is 19% for profits under £50,000. IBISS & CO., corporation tax services do more than just file your CT600 return. We actively audit your accounts to legally reduce your tax liability through R&D credits, capital allowances, and strategic director remuneration.
Common Corporation Tax
Mistakes Costing Directors Money
Without proactive tax planning, many UK businesses overpay HMRC. Do you make these common errors?
Missing Deadlines
It’s easy to trip up. You must pay your tax at 9 months and 1 day, but you have 12 months to file the paperwork. Mixing these up triggers automatic fines.
Ignore Allowable Expenses
Every missed receipt inflates your profit on paper. If you don't track costs correctly, you end up paying tax on money you’ve already spent.
Missed Reliefs
Investing in new equipment or software? Schemes like R&D Tax Credits and the Annual Investment Allowance exist to reward you. Don't leave your own money behind.
Poor Profit Extraction
Drawing a standard PAYE salary usually means overpaying tax. A smart mix of a base salary topped up with dividends will drastically increase your actual take home pay.
How Our Corporation
Tax Services Reduce Your Bill
01
CT600 Compliance & Filing
Accurate calculation of taxable profits and submission on time to HMRC.
We handle the complex iXBRL tagging, prepare your statutory accounts, and guarantee your CT600 is filed correctly and on time, keeping you completely compliant.
02
Proactive Tax Planning
Taking money out of your business efficiently, without handing a huge chunk straight back to HMRC.
We figure out the exact right balance between your salary & dividends. By optimising your pay structure, utilising smart pension contributions and safely managing director loans, we make sure you keep as much of your hard earned profit as legally possible.
03
Corporate Tax Reliefs & Allowances
Utilizing government schemes to lower your final tax bill.
Before we file, we audit your spending for R&D Tax Credits and Capital Allowances including Super Deduction equivalents and Patent Box.
04
UK & Dubai Cross Border Tax
Corporate tax liabilities across multiple jurisdictions.
You are a UK company expanding to the UAE or a Dubai based expat holding UK corporate assets. Our physical offices in London & Dubai ensure seamless, dual country compliance.
50 Years Combined Experience
Elite advisory led by seasoned Chartered Tax Advisers.
ICAEW Regulated
We operate to the highest professional and ethical standards in the UK.
Fixed-Fee Transparency
No surprise hourly bills. We agree on a clear scope of work and a fixed price upfront.
Dedicated Partner
You get a direct line to your accountant no call centres, no juniors.
Frequently Asked Questions
When is UK Corporation Tax due?
Your Corporation Tax payment is usually due exactly 9 months and 1 day after the end of your company’s accounting period. However, the actual CT600 tax return document must be filed within 12 months. Missing either deadline results in strict HMRC penalties.
How can I legally reduce my UK Corporation Tax?
You can legally reduce your Corporation Tax liability by claiming all allowable business expenses, utilizing Capital Allowances (like the Annual Investment Allowance), claiming R&D Tax Credits if your company innovates, and implementing a highly tax-efficient salary and dividend split for directors.
Do I pay Corporation Tax if my company makes a loss?
No, you do not pay Corporation Tax if your company makes a trading loss. In fact, IBISS & CO can help you carry that loss backward to claim a refund on tax paid in the previous year, or carry it forward to offset against future profits.
IBISS Offices Location
Contact Us Online
Confused Where To Start?
Schedule a Free 15-minute discovery call by providing your contact details, mentioning your requirements, and selecting a convenient date for the call.
How our discovery call works:
- Complete Our Contact Form
- Discovery Calls Scheduled
- Receive a Tailored Proposal
Sectors We Serve
E-Commerce & Retail
We offer tailored tax strategies, accounting and growth advice specifically designed for the unique challenges of your industry.
Section 24, capital gains and stamp duty can eat into your rental profits. Our award winning specialists help landlords, developers & SPVs structure their portfolios to maximise returns and stay HMRC compliant.
Doctors, dentists and care home operators face highly specific financial regulations. From NHS pension superannuation calculations to specialized medical partnership structures, we offer discrete, expert accounting for healthcare professionals.
We support businesses across a wide range of industries with clear practical advice.
IBISS & CO, help you tackle everyday challenges and reach your business goals.
Reviews
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IQBAL ZAFAR
I have been IBISS & CO client for past 7 years. Their team is professional and proactive who assist me in filing my overseas and UK tax disclosure.
Ahmed Hussain
I’ve used them for the past few years now and I am very satisfied with their services. The staff are very amicable as well. Definitely recommend them.
Stephen Hudson
The response of IBISS and Co to my tax problem was rapid and professional. The advisor understood the problem and recommended
Andrea Callegari
Excellent service! Provided a clear explanation to my matter in a timely manner. Very helpful and polite. Highly recommend.
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John Mitchell
“IBISS & CO provided exceptional financial guidance. Their expertise and personalized approach helped streamline our investment strategy. Highly recommend for anyone seeking top-tier financial services.”
Sarah Thompson
Working with IBISS & CO was a game-changer for our business. Their insightful advice and thorough analysis led to significant financial growth. Outstanding service!
Michael Reynolds
IBISS & CO exceeded expectations with their professional and strategic approach. They understood our needs and delivered results beyond our expectations. A reliable partner in finance.”
Emily Carter
“IBISS & CO’s financial planning transformed our portfolio. Their team’s dedication and deep market knowledge ensured we made the best decisions. A trusted partner for financial success.”
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Ashton Mills
IBISS & CO provided outstanding service, handling our project with precision and care. Their expertise made a significant difference, ensuring we achieved our goals efficiently.”
Lily Parker
Partnering with IBISS & CO was a game-changer. Their dedication to excellence and proactive approach led to exceptional outcomes. Highly recommend them for any business endeavor.”
James Turner
IBISS & CO exceeded expectations. Their professional team delivered top-notch results, staying committed to our needs throughout. A trusted partner in every sense.”
Sophia Grant
Working with IBISS & CO was a pleasure. Their focus on client satisfaction and detail-oriented service ensured our project’s success. They’re a reliable and highly skilled team.”
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Sarah J
BISS & CO exceeded our expectations with their professionalism and expertise. Our project was delivered on time and flawlessly executed.
Mike L
Outstanding service! BISS & CO’s attention to detail and client-focused approach made all the difference
Jessica M
Working with BISS & CO was a breeze. Their team is knowledgeable, responsive, and truly cares about client satisfaction.
David P
BISS & CO delivered exceptional results on our project. Highly recommend their services for anyone seeking quality and reliability.
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Explore the IBISS blog and case studies for helpful tips on tax accounting and business advice. If you need expert support just get in touch with us. The IBISS & CO expert team accountants & tax advisers is always here to help you and your business succeed.
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