Smart deadlines. Continuous Xero intelligence. UK-native compliance. AI that surfaces what needs action before you ask.
Live in production at fynvro.app · 30-day trial on any paid plan
Most practice tools track what's due. Fynvro OS also watches what's wrong with the numbers — and tells you what to do next.
Critical insights that need a partner decision, team workload, service breakdown and live counts — your morning briefing in one screen.
VAT, Payroll, Accounts, CT, Confirmation Statement and Pension — each auto-generating the work every period, by urgency tier.
Self-assign from the unassigned pool, block-with-reason (who, why, when), and resume with the full history intact.
Document gaps, Xero anomalies and a plain-English next action — surfaced before issues escalate, all in one view.
Twelve OAuth scopes and real-time, current-day Trial Balance capture. Ten intelligence patterns run every day, against every connected Xero client — each surfacing a real compliance or revenue risk with a suggested next action.
Companies House is synced every night, with a weekly officers sweep. Incoming directors, charge registrations and accounting-reference changes are surfaced before you'd notice them manually — you never have to remember to press "sync".
Firm data is isolated by workspace, enforced where it counts — not in the application alone.
Who did what, when. A complete record across the whole workspace.
The super-admin role cannot, by design, read firm content. Made for ICAEW-regulated firms.
The honest exchange: we get your feedback and your patience for the rough edges of an early product. You get pricing no future customer will see again — and a builder genuinely listening.
30 days. No card required. Tour fynvro.app on your own Xero data.
Fynvro OS combines core product views with the deep capabilities UK firms actually need — statutory deadlines, continuous Xero intelligence, AI that supports your team, structured workstreams, and architecture designed for compliance from day one.
Every partner opens Practice Pulse to the signals that need a decision — not a wall of raw data. Critical insights, team workload and a service breakdown across the whole firm.
Final Accounts, CT600, VAT, CS01, Payroll and Pension — each in its own lane with recurring auto-generation, urgency tiers and Forever Preservation archiving. See the whole pipeline at a glance.
A personal task organiser per fee-earner. Pipeline-aware, self-assignable, and built so nothing gets lost between "started" and "done".
Deadline urgency, client transitions, Xero anomalies, team activity and AI suggestions — all surfaced together, with a plain-English next action and a firm briefing on top.
Who's working on what. What just moved. What just got blocked or completed. Work distributes without bottlenecks — and every state-changing action is on the record.
Grouped by category — shipped, not promised.
Every feature above is live at fynvro.app. Try it on your own clients.
Six tiers, including a free plan. All plans include the core features — tiers differ by client cap, team size, and AI email volume. Start free with no card, or try a paid plan free for 30 days.
Annual billing saves you the equivalent of ~2 months per year. All plans include every feature. Cancel anytime.
Three UK firms. In exchange for honest feedback and patience with an early product: lifetime pricing no future customer will see, a direct line to the founder, roadmap influence, and unlimited clients and users.
Apply now →
Running BACKBENCHER and selling on eBay and Amazon means I live the same operational reality UK accountancy firms know well: VAT schemes, payment platforms, marketplace fees, customs codes, late-paying customers, Corporation Tax estimates, year-end accruals.
The regulatory and bookkeeping load on a small UK business is real, expensive, and unforgiving. Fynvro began as the tool I wished my own accountant had been using — and the platform I'd want if I ran a practice.
"UK accountancy firms deserve software built by someone who has actually filed VAT returns, paid Corporation Tax, and chased late invoices — not by someone who learned about UK accountancy from a marketing brief."
Kazi Salah Uddin · Founder, Fynvro OS
No card. No sales funnel. If anything raises a question, write to Kazi directly.
Plain-English notes on the compliance risks that hide underneath the deadlines — written from the builder's chair, for firm owners who'd rather catch a problem early than explain it later.
A director's loan that isn't repaid within nine months of the year-end attracts a 33.75% charge. Here's how the balance creeps up quietly, and the trial-balance signal that catches it before year-end.
Making Tax Digital didn't just change the format — it changed the timing risk. Why the submission window, not the deadline, is where quarterly VAT goes wrong, and how continuous monitoring closes the gap.
Suspense balances are easy to ignore in-quarter and painful to unpick in March. We look at why suspense growth compounds, and what a healthy reconciliation rhythm looks like across a book of clients.
Incoming directors, charge registrations and accounting-reference changes rarely announce themselves. Why a nightly sweep beats a quarterly check — and the WIP at risk when a transition slips past.
Most mornings begin with triage, not work. How a critical / quick-wins / watch-outs split turns a wall of clients into a short, ranked list of what actually needs a decision.
Where AI genuinely earns its place in a regulated firm — drafting in your voice, surfacing signals — and the hard line we draw so a human always reviews before anything reaches a client.
More notes are on the way. Want one in your inbox when it lands? Get in touch →
30–45 minutes, screen-shared. We tour fynvro.app on your real Xero data if you'd like, and you ask the questions that matter to a firm your size.
This opens a pre-filled email in your mail app — nothing is sent automatically.
Last updated: 20 June 2026
Fynvro OS is operated by FYNVRO LTD, a company registered in England & Wales under company number 17287290, based in London. For any privacy question, contact us at support@fynvro.com.
Two distinct relationships apply, and the difference matters:
Fynvro OS uses AI to draft client emails and surface practice insights. The principle is simple: the AI suggests, the accountant decides. Content processed for these features is used to generate your suggestions only — it is not used to train third-party foundation models.
We do not sell personal data. We share data only with sub-processors that help us run the service, each bound by contract: a payment processor (Stripe), cloud hosting and database infrastructure, an AI processing provider, and the integrations you actively connect (Xero, Companies House). A current list of sub-processors is available on request from support@fynvro.com.
Where personal data is processed outside the UK or EEA, we rely on appropriate safeguards such as the UK International Data Transfer Agreement or Standard Contractual Clauses.
We retain data for as long as your account is active, plus a limited period afterwards as required by law. Our Forever Preservation archiving means records are archived rather than hard-deleted while your account is active. On account closure, data is deleted or returned in line with our Terms.
Firm data is isolated by workspace with row-level security at the database layer, audit trails on every state-changing action, and encryption in transit. By design, our super-admin role cannot read firm content.
You have rights to access, rectify, erase, restrict, port and object to the processing of your personal data. To exercise them, email support@fynvro.com. Where your firm is the controller of client data, please direct those requests to your firm. You may also complain to the UK Information Commissioner's Office at ico.org.uk.
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We may update this policy from time to time. We will post the revised version here with a new "last updated" date.
Last updated: 20 June 2026
"Fynvro", "we" or "us" means FYNVRO LTD (company number 17287290). "Service" means the Fynvro OS application and website. "You" means the firm and its authorised users.
You must provide accurate account information and keep it current. You are responsible for your users, for safeguarding login credentials, and for all activity that occurs under your account.
You agree not to use the Service unlawfully, attempt to bypass its security or workspace isolation, reverse-engineer the platform, or upload data you have no lawful right to process.
You retain ownership of the data you put into Fynvro OS. You are responsible for its accuracy and for the professional review of any output — including AI drafts and insights — before relying on it, sending it to a client, or submitting it to a regulator.
AI-generated drafts and insights are suggestions only and may contain errors. The AI suggests; the accountant always decides. You must review AI output before use, and Fynvro is not liable for actions taken on unreviewed output.
The Service connects to third parties including Xero, Companies House and Stripe, each governed by its own terms. We are not responsible for the availability or accuracy of those third-party services.
FYNVRO LTD owns the Service and all related intellectual property. We grant you a limited, non-exclusive, non-transferable licence to use it for your firm's internal business purposes for the duration of your subscription.
We aim for high availability but do not guarantee uninterrupted service. Planned maintenance and occasional downtime may occur.
To the fullest extent permitted by law, the Service is provided "as is". Fynvro OS is a practice-management tool and is not a substitute for professional judgement, accountancy advice, or regulatory compliance decisions, which remain yours.
To the extent permitted by law, our total liability arising from the Service is limited to the fees you paid in the twelve months before the claim. Nothing in these Terms limits liability that cannot lawfully be limited.
Either party may terminate in line with these Terms. On termination, your right to use the Service ends, and we handle your data as described in our Privacy Policy.
These Terms are governed by the laws of England & Wales, and the courts of England & Wales have exclusive jurisdiction.
We may update these Terms from time to time and will post the revised version here with a new date. Continued use after changes constitutes acceptance.
Questions about these Terms? Email support@fynvro.com.
Last updated: 20 June 2026
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We do not display advertising in our products, we do not use third-party advertising cookies, and we do not sell your data to advertisers.
You can control or delete cookies through your browser settings. Note that disabling strictly necessary cookies will prevent you from signing in to and using the application.
We may update this policy and will post any changes here. Questions? Email support@fynvro.com. For more on how we handle personal data, see our Privacy Policy.
Last updated: 20 June 2026
For your firm's own account data, FYNVRO LTD is the data controller. For the client data your firm processes through Fynvro OS — including Xero and Companies House data — your firm is the controller and we are your processor, acting only on your documented instructions.
We process personal data on the bases of contract, legitimate interests, legal obligation and, where relevant, consent — as detailed in our Privacy Policy.
To exercise any of these, email support@fynvro.com. We aim to respond within one month.
For firms acting as controllers, a Data Processing Agreement is available. Under it, we process client data only on your documented instructions, ensure our sub-processors are bound by equivalent obligations, assist you with data-subject requests, and notify you of any personal data breach without undue delay.
Where data is transferred outside the UK or EEA, we apply appropriate safeguards such as the UK International Data Transfer Agreement or Standard Contractual Clauses.
We retain personal data only as long as necessary for the purposes described, or as required by law, and delete or return it on account closure in line with our Terms.
Our technical and organisational measures include row-level security at the database layer, workspace isolation between firms, audit trails on every state-changing action, encryption in transit, and a super-admin role that cannot, by design, read firm content.
You have the right to lodge a complaint with the UK Information Commissioner's Office (ICO) at ico.org.uk if you believe your data has been handled unlawfully.
For any data-protection matter, contact us at support@fynvro.com.