Your firm sells judgement. Let the admin run itself.
One operating system for a professional services firm, supercharged by AI. Agents sort the inbox, turn meetings into tasks, check every return, draft the letters and write the timesheet. Your people spend their day on clients and the calls only they can make.
A firm runs on judgement. It drowns in the tools around it.
One Tuesday. Six moments the admin used to eat.
What the admin is costing your firm.
An estimate from your inputs and our working assumptions, shown on the left. Not a measured result. Change any number.
Talk to us about your firm →Nine areas of the firm. One system underneath.
Clients, filings, time, billing and people share one record, so a signed engagement letter creates the obligations, the obligations create the work, and the work becomes the timesheet and the invoice.
- My Day lists only what needs you: overdue tasks, approvals, unsent drafts and deadlines.
- AI inbox matches every email to a client, files attachments, sets urgency and drafts the reply.
- Tax-authority notices from the FTA, ZATCA or MoF are forced to an urgent task.
- Team chat with an assistant that answers from a client's own documents.
- Onboarding and KYC with trade licences and VAT certificates read into the profile.
- Data room and client portal with secure, expiring upload links.
- Health score from filing quality, responsiveness, engagement and risk.
- Relationship sweep surfaces dormant clients and drafts the check-in.
- Prep brief: one page on the client, open work and recent correspondence.
- Notes to actions: attendees, decisions and action items with owners and dates.
- Proposed tasks land in the queue; nothing is created until you confirm.
- 250+ VAT and CT checks across completeness, treatment and examination.
- Tax treatments proposed from the firm's own precedents first.
- Red-team review before approval, variance narratives and transmittal letters.
- Filed versions are permanent: corrections supersede, never overwrite.
- Pipeline from lead to won, with cross-sell gaps across your client base.
- Proposals and engagement letters drafted from the scope you choose.
- Built-in e-signature sealed with a SHA-256 audit certificate.
- Regulatory radar drafts impact letters when the law moves.
- AI-drafted timesheets from the day's work; it may lower an estimate, never raise it.
- WIP, invoices and retainers with maker-checker approval.
- Expenses with receipts read automatically.
- Realisation, effective rate and utilisation per person and per client.
- Capacity eight weeks ahead: who is idle, who is running hot.
- Firm brief and weekly digest for the partners.
- Ask answers from your library and positions, with sources.
- Firm positions drafted, published and retired with approval.
- Academy quizzes and deterministic VAT, CT, penalty and WHT calculators.
- Leave, letters and documents in self-service.
- Appraisals where only a person can give a rating.
- Payroll with approval, visible to owners only.
The model proposes. Code computes. A named person confirms.
Every AI suggestion is a card
Tasks, timesheet lines, obligations and tax treatments arrive as proposals. Nothing is created until someone accepts it.
No email leaves on its own
Replies are drafted, never sent automatically. Auto-send to a client is off by default and, when enabled, waits in a 24-hour hold.
Code does the arithmetic
Fees, WIP, realisation and every tax figure are computed in code. The AI writes words around numbers, never the numbers.
A ledger of AI decisions
Every AI decision is logged with whether a person agreed, and governance reports show clients and regulators how AI is used.
Some things AI cannot touch
Appraisal ratings are human only. Automation rules ship switched off. Returns, invoices and payroll need a maker and a checker.
Security from the first table
Row-level security on every table, access by engagement team, mandatory two-factor sign-in, expiring links, malware-scanned uploads and daily backups.
Built inside a working Gulf tax firm.
hysaab services OS started as the system our own advisory practice runs on. Every screen exists because a partner, a manager or a junior needed it on a real deadline, for real clients with the FTA on the other end.
We are opening it to a small group of founding firms in the UAE and KSA. Founding firms shape what comes next and keep founder pricing for as long as they stay.
Give your people their judgement back.
hysaab services OS opens to a small group of tax and advisory firms first. Tell us about your firm and a real person will walk you through it within one working day.