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ClearSum Accounting

Forward-thinking accounting support that makes your finances simple and stress-free 
for startups, sole traders and small businesses

Going freelance, consulting or turning a side hustle full-time and not sure where to start? We’ll help you get your finances sorted from the off.


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Need a hand taking off?

We're here to help.


Whether you are figuring out your first invoice or wondering how to register your business, we make the financial side simple and easy to understand.

From bookkeeping and taxes to planning ahead, ClearSum supports startups and small businesses across Brighton and Hove with clear, practical advice you can rely on.

 Why work with ClearSum?


We specialise in supporting early-stage founders and solo business owners across Brighton and Hove.

You won’t find one-size-fits-all packages here. Instead, we offer flexible, friendly accounting support tailored to what you actually need.

Whether it is setting up your bookkeeping, planning for taxes or getting a clearer view of your cashflow, we help you stay organised, compliant and confident.

Talk to us about your business

What We Do

We make financial management simple, so you can focus on running your business.

Bookkeeping & Compliance

Stay on top of your numbers and meet your obligations without stressful deadlines.


Year End & Tax 

File on time, avoid surprises and keep more of what you earn.


Reporting & Forecasting 

Get clear insights into your performance and forecasts to support better decision-making.


Fractional Finance Director 

Access experienced finance leadership when you need strategic support.

Explore our services

Who We Help

Every business is different, but we often work with:

Sole traders

Straightforward support with tax and expenses, helping you stay compliant and organised.


Startups 

Getting things right from day one, with the right systems, structure and advice in place.


Small businesses 

Insightful reporting and proactive guidance to support sustainable growth.

Explore how we can help

With over 10 years’ experience working in finance and accountancy, I have seen how overwhelming numbers can feel when you are running your own business, especially in the early stages.


Whether you are going freelance, setting up a consultancy or building something from scratch, we provide tailored finance support for startups and small businesses.


At ClearSum, we do not just tick boxes for HMRC. We help you understand your numbers, plan ahead and make smart business decisions, all in plain English with real support along the way.


If you are ready to take the guesswork out of your finances, work with a team of accountants for startups and small businesses and focus on what matters most, building a business you love.


Harry Whittington, Founder

Connect with Harry on LinkedIn