Your day, a little clearer.
See your accounts, a tax estimate, and what needs your attention. One calm place to start.
Meet Siena. An AI finance companion for UK sole traders, built to make room for the work and life you love.

See your accounts, a tax estimate, and what needs your attention. One calm place to start.
See your income and expenses together. Check the category, keep the context, and find the details when you need them.
Open the working behind a tax estimate. See the income, expenses, and assumptions that shape it.
We’re building calculations with fixed rules and visible working, so you can see where a figure comes from.
AI helps explain information in plain English and makes routine admin easier to follow.
Important actions come back to you for review. Siena is designed to support your judgment.