Built by an accountant. Manage clients, deadlines, AML, workflows, and email automation — all in one place. From £25/month.
Start 30-day free trial See pricingSiensi Software was built by a practising accountant who got tired of paying £30–£50 per user per month for software that did 90% of what was needed, and either lacked the rest or charged extra for it. Designed specifically for solo and small practices, it focuses on what you actually need: a clear view of your clients, deadlines that don't slip, automated client communications, and proper AML record keeping — without the complexity, the upsells, or the price tag of enterprise software.
A complete practice management toolkit, not a stripped-down free tier
Store everything you need on each client — company details, contacts, AML documents, engagement letters, and Companies House data, all in one place.
Pre-built workflows for Annual Accounts, VAT, Payroll, Self Assessment, Confirmation Statements, CIS, and more — fully automated stage progression.
Every stage of every job automatically creates the right deadlines. Never miss a CT600 or VAT submission again.
Year-end notifications, VAT reminders, CT payment alerts, SA chase emails — all drafted automatically using your own SMTP and templates.
Upload and store ID documents, track review dates, and keep an audit-ready record for every client and beneficial owner.
One-click lookup pulls in company data, year ends, CS dates, and changes since last refresh — saving hours of manual checking.
A companion mobile PWA so you can check deadlines, AML, and client info on your phone, anywhere.
Multi-tenant architecture with row-level security — only you can see your practice's data. Encrypted at rest. Daily backups.
No per-user fees. No surprise upgrade walls. Pay one simple monthly fee based on your client count.
No per-user charges. No setup fees. 30-day free trial — no card required.
All prices in GBP, exclusive of VAT. Cancel any time — no contract.
Start a free 30-day trial with no card required. If it doesn't fit your practice, walk away with no obligation.
Start free trial