Tax services

Corporate tax accountant

Corporation tax? We can handle that for you

We are specialists in corporate tax accountancy here at Knowles Warwick. We’ve been working with businesses across Sheffield and South Yorkshire since 1985 to make sure that they are both compliant and tax efficient.

Save money without sacrificing compliance

Part of owning a business is meeting your tax and reporting responsibilities. Boring? Maybe. Time-consuming? It doesn’t have to be. Let our corporate tax service handle your business tax return accounting and we’ll help you to save time and money while ensuring you comply with HMRC’s requirements.

Compliant and efficient corporate tax audit

We will conduct a full financial review of your business, identifying areas where you may be able to save money. A corporate tax audit will allow us to help you:

  • Minimise your corporation tax liabilities
  • Make the most of any available credits and reliefs, tax losses and deferment opportunities
  • Ensure you meet all your corporation tax self assessment (CTSA) deadlines and file your returns correctly using compatible online accounting software
  • Avoid unnecessary penalties and HMRC enquiries

Tax support whatever your size

You can rely on us to provide a friendly and professional corporate tax service, no matter how large or small your business may be. We will determine your corporation tax liability and identify any allowable or disallowable expenses, and consider any dividends and charitable donations that may affect your corporation tax bill.

We will also look at your business structure and investments, and advise on any changes that could improve your tax efficiency. And if you’re an innovative business with research and development costs, we’ll help you to submit a claim for R&D tax relief, which could give you a 100% refund of your project costs.

Tax investigation support

In the unlikely event that HMRC decides to take a closer look at your business tax affairs, we will be there by your side every step of the way. Our Fee Protection Service is designed to take the stress out of an HMRC enquiry into your taxes. You’ll need an expert accountant to advise and support you throughout the investigation, and that’s exactly what we’ll do.

With over 35 years of accounting experience in the Sheffield and South Yorkshire area, rest assured that your business is in safe hands with us.


Get in touch to find out how we could help you to save time and money on your business tax. Call us on 0114 274 7576 and ask for our Director of Tax, Alex, or email

How we can help


We support contractors in the construction industry to meet your tax obligations.

Construction Industry Scheme


We’ll help you claim the tax credits you’re owed for your innovative projects.

R&D services

Investment Options

We can advise you on the most tax-efficient savings and investment options.

Tax efficient investments


Restructuring of debt or operations could reduce your costs and improve efficiency.

Business restructuring

Get a helping hand for your business.