Modern Accounting Built for Saas Businesses

Save time, reduce errors, and keep your numbers investor-ready at every stage.

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Why Choose Addition?

Automated Bank Reconciliation

Addition keeps everything reconciled automatically, no spreadsheets required.

AI Bill & Expense
Capture

Upload invoices or receipts and let AI handle categorisation and reconciliation, keeping your books clean with less effort.
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Real-time Dashboards
and Insights

Track cash flow, burn rate, MRR, and other key metrics in real time - so you always know your numbers.

Integrated With The
Tools You Already Use

No need to change how you work. Addition plugs straight into your existing tools, so your numbers stay in sync automatically.

Investor-Ready
Reporting

Your books stay structured and accurate from day one, making fundraising, board reporting, and forecasting a smooth process.

Dedicated Support Team

A dedicated team of finance experts supporting you, helping you solve problems, stay on top of deadlines, and make better financial decisions.

Trusted by the best

John

Addition are my 'on tap' bookkeepers and financial advisors. I have saved so much time and money switching my basic bookkeeping to them, and I have also utilised them for an R&D claim at half the price of others on the market.

Adam

They really are so incredible - they help us with all of our requirements from payroll to forecasting to budget creation to all end of month and end of year reporting and even R&D tax. Absolute lifesaver for our company and the team is second to none !

Michael

Addition have been great in supporting our growth since opening, and now helping build our development plans. It would have been a much more difficult journey without them!

Laura

I've been with Addition for quite a while now and never had a negative experience. They are excellent at keeping up to date with any accounting requirements and the software solution makes it very easy to manage.