Accounts & Corporation Tax for UK companies

Stay compliant, minimise tax, and gain valuable insight – with year-end support that goes beyond the numbers.

On-time submissions

Tax-saving opportunities identified

Peace of mind over compliance

Less admin, more insight

Service lead

Jamie Snell

Director of Client Finance

Let us handle the hard stuff

From financial reporting to tax calculations, we take care of everything so you can stay focused on running your business.

Compliance is non-negotiable. But that doesn’t mean it should be a pain.

Companies often lose time and sleep, trying to meet annual obligations and decode shifting financial reporting rules.

You might be:

  • Unsure of what’s required by Companies House or HMRC

  • Worried about tax reliefs you’re missing out on

  • Stretched for time and chasing multiple providers

  • Concerned about penalties or delays

That’s where we come in.

Our team manages your accounts and Corporation Tax in one smooth, joined-up process – optimising your return and keeping you compliant.

“We don’t just file your accounts, we use them to find ways to save you tax and improve profitability.”
Caitlyn Evans
Client Finance Partner

Year-end sorted. Tax optimised.

We handle your Accounts and Corporation Tax in one joined-up process.

Included in this service:

  • Preparation of statutory year-end accounts

  • iXBRL tagging and Companies House submission

  • Corporation Tax (CT600) return calculation and filing

  • Review of tax reliefs and allowances to minimise tax

  • Dealing with HMRC on your behalf

  • Clear timelines and updates throughout

More than just a tick-box exercise

Annual compliance should support better decisions, not just meet deadlines.

Our approach:

  • We prepare, review, and submit your accounts without the hassle

  • Tax returns are checked against the latest reliefs and structures

  • We flag risks and opportunities as part of the process

  • No jargon, no unnecessary meetings – just a clear plan

“Every set of accounts tells a story, our job is to make sure yours says all the right things to HMRC, shareholders, and lenders.”
Luke Noble
Client Finance Partner
“Tax legislation changes all the time, but that’s our job to keep up with, so you don’t have to.”
Karen Coult
Client Finance Partner

Our promise

We promise to respond to every enquiry within one business day, providing a clear timeframe for the anticipated resolution.

We’ll get everything filed on time – and make sure you’re not overpaying.

  • Keep your accounts accurate and on time

  • Avoid fines and unnecessary tax bills

  • Understand what your numbers actually mean

  • Focus on your business, not admin

Let’s make compliance work harder for your business

Book a discovery call to get started – and stop worrying about year-end.

Your client finance leads

Jamie Snell

Director of Client Finance

Caitlyn Evans

Client Finance Partner

Karen Coult

Client Finance Partner

Luke Noble

Client Finance Partner

Frequently asked questions

Your accounts must be filed with Companies House within 9 months of your financial year end (or 21 months after incorporation for your first year). Your Corporation Tax return is due 12 months after the year end, but any tax owed must be paid 9 months and 1 day after the end of your accounting period.

Missing your filing deadlines can lead to HMRC and Companies House penalties. We’ll keep you ahead of the deadlines and avoid last-minute stress.

Yes. If your company is registered with Companies House, you still need to submit annual accounts – even if it hasn’t traded. These will be filed as dormant company accounts unless you're actively operating.

Yes – you can shorten your company’s year end at any time. You can also extend it by up to 6 months, but only once every 5 years. Just keep in mind: you can’t change your year end if your accounts are already overdue.

Absolutely. Our team reviews your accounts to identify tax reliefs, allowances, and opportunities for profit extraction – all designed to ensure you’re not paying more tax than necessary.

We prepare and file your statutory accounts, submit your Corporation Tax return (CT600), tag everything for compliance, and advise on ways to reduce your tax bill. We also deal directly with HMRC so you don’t have to.

Our core sectors

Our expertise spans a wide range of industries, with 60% of our client base concentrated in the following core sectors:

Professional Services

Consultants, agencies, engineers, and other specialised firms providing expert professional services.

Technology & Innovation

SaaS companies, crypto businesses, software development firms, and tech start-ups.

Manufacturing & Logistics

Manufacturers, supply chain operators, warehousing businesses, and logistics providers.

While we specialise in these areas, our diverse client portfolio includes businesses across various industries, from retail to construction and manufacturing to hospitality.

No matter your sector, we’re equipped to support your growth and success.

Trusted by businesses like yours

"Caldwell Penn's transparency, professionalism, attention to detail, and friendliness distinguish them from all other firms we have previously engaged. They have exceeded our expectations by additionally offering R&D advice, which has significantly benefited our operations."
Allaero Limited
"While it’s hard to get excited about an audit, Caldwell Penn made the experience as seamless as possible. Communication was clear and effective, and the management letter provided valuable insights for our business. We highly recommend their services to any business in need of a thorough and efficient audit."
UK Lanyard Makers Ltd
"Caldwell Penn handle everything for us with a proactive, tailored approach. Their dedicated team understands our goals, ensuring we never miss tax-saving opportunities. They’re more than accountants, they’re partners in our growth."
Syon Creative Ltd
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