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ClearSum Accounting

Accountants for
Startups & Small Businesses

Going freelance, consulting or turning a side hustle full-time and don't know where to start? We’ll help you get your finances sorted from the off!


Need a hand taking off?

We’ve got you!

Whether you're figuring out your first invoice or wondering how to register your business, we’re here to make the financial side simple.

From bookkeeping and taxes to planning ahead, the ClearSum team are specialist accountants for startups & small businesses in Brighton & Hove!

Why work with ClearSum?

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

You won’t find cookie-cutter packages here - just flexible and friendly advice tailored to what you actually need.

Whether it’s setting up your bookkeeping, planning for taxes, or figuring out cash flow, we’ve got your back.

What We Do

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

Bookkeeping & Compliance - Stay on top of your numbers with no stressful deadlines.
Year End & Tax - File on time, avoid surprises, and keep more of what you earn.
Reporting & Forecasting - Get clear insights and forecasts to make smarter decisions.
Fractional Finance Director - Experienced finance leadership when you need support.

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Who We Help

Every business is different, but we often work with:

Sole traders - Straightforward support with tax and expenses, so you stay compliant.
Startups - Getting things right from day one, with the right systems and advice.
Small businesses - Clear reporting and proactive guidance to help you scale sustainably.

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"With over 10 years' experience working in finance & accountancy, I’ve seen how overwhelming numbers can feel when you're running your own business, especially in the early stages.

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

At ClearSum, we don’t just tick boxes for HMRC. We help you make sense of your numbers, plan ahead and make smart business decisions - all in plain English, with real support along the way.

So if you’re ready to take the guesswork out of your finances, then work with a team of accountants for startups & small businesses and focus on what matters most - building a business you love."

Harry Whittington, Founder

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