Odoo 19 works as a practice management system for UK accountancy firms by integrating CRM, project management, timesheets, invoicing and a client portal in one platform. It automates the timesheet-to-invoice cycle, chases debtors automatically, and files the firm's own VAT return via the HMRC Making Tax Digital API. Implementations start from £4,000 and sit alongside - not replacing - specialist tax software such as Iris, CCH or TaxCalc.
Last updated: June 2026
Odoo 19 is not an accounting system for your clients. It is the operational platform your firm uses to run itself: managing client relationships, tracking engagement delivery, capturing billable time and generating invoices. Your clients continue to use Xero, QuickBooks or Sage for their own books. Odoo sits alongside those systems as your practice management layer.
When accountancy practices contact us, the first question we hear is almost always: 'Is this our new accounting software?' The answer is no - and that distinction matters enormously. Odoo 19 is not the system your clients use to manage their own books. It is the system your firm uses to manage itself: your clients, your engagements, your time, your billing and your internal administration.
At Softomate, we implement Odoo specifically for professional services firms in the UK, including accountancy practices. Our implementations are scoped around the real-world workflows of a UK practice: client onboarding, engagement management, timesheet capture, invoice generation and the debtor chasing cycle that every partner knows too well.
A well-scoped Odoo implementation for an accountancy firm draws on five core modules. You do not need to switch on every module in the platform. We configure only what drives value for your specific billing model and team size.
Before a Softomate implementation begins, we ask every practice to work through the following readiness checklist. Practices that complete this preparation go live faster and with fewer surprises in the first 30 days.
| Readiness area | What to prepare | Why it matters | Typical time to complete |
|---|---|---|---|
| Client data | Export a clean client list from your existing system: company name, contact name, email, engagement type, billing rate or fixed fee. Remove duplicates and lapsed clients before migration. | Odoo's CRM and billing modules are only as clean as the data migrated into them. Messy source data creates billing errors from day one. | 1-2 days for a firm with under 200 active clients |
| Billing configuration decisions | Document which clients are billed time-and-materials, fixed fee or retainer. Note the hourly rate per fee earner grade. Identify any bespoke billing arrangements. | Odoo requires a billing policy set per engagement. These decisions must be made before configuration - they cannot be assumed from a spreadsheet. | Half a day with the billing partner |
| Chart of accounts | Confirm your firm's own chart of accounts structure. Identify the nominal codes you use for fee income, disbursements and VAT. | Odoo's accounting module must be mapped to your nominal structure before invoices are raised. Retrofitting this after go-live is disruptive. | 1-2 hours with the practice manager |
| Open WIP and debtors | Export a list of open invoices (outstanding debtors) and any WIP that has not yet been invoiced at the go-live date. | Odoo needs to know what was already owed and unbilled at the point it takes over. Without this, the aged debtor report is incomplete from day one. | 1 day to export, reconcile and validate |
| User roles and permissions | Decide who has access to what: which staff see time only, which see billing, which partners see all client profitability data. Document this before the system is built. | Odoo's permission model is granular. Decisions made upfront prevent access disputes after go-live. | 1-2 hours with the managing partner |
| Partner buy-in | Confirm that all partners will log their own time in Odoo from day one. Assign an internal project champion responsible for adoption. | Partner behaviour sets the standard for the whole firm. If partners do not log time, junior staff follow. This single factor determines whether the implementation succeeds or fails. | Ongoing - must be confirmed before project start |
We are straightforward about this with every practice we work with. Odoo is not a replacement for specialist tax software. It will not prepare a self-assessment computation, produce a corporation tax return in CT600 format, or file accounts directly to Companies House via the XBRL route. For those workflows, your existing tools - whether Iris, CCH, TaxCalc or FreeAgent - remain in place. Odoo manages the commercial side of your practice; the specialist compliance tools manage the technical tax side. The two coexist, and we can configure lightweight integrations between them where it makes operational sense.
This is the honest positioning of Odoo for an accountancy firm. It replaces the collection of spreadsheets, Outlook folders and manual invoice runs that most small and mid-sized practices rely on today. It does not replace the compliance engine.
Time tracking in Odoo works through a mobile-first timesheet module where fee earners log hours directly against named client engagements. Approved timesheets automatically generate draft invoices at the configured hourly rate, removing the gap between work done and work billed that costs most practices 8-15% of recoverable revenue each quarter.
The moment a fee earner stops logging time on a spreadsheet and starts logging it against a named engagement in Odoo, three things happen: the data becomes reliable, it becomes available to the billing team in real time, and it stops disappearing into email threads and forgotten notes.
In Odoo 19, the flow is linear and requires minimal manual intervention once configured correctly. A fee earner opens the Timesheets app and logs hours against a task within a client project. The task carries a billing policy: either billable at a specific rate, non-billable, or billable at a milestone. When the partner or billing manager reviews the week's timesheets and marks them as approved, those hours are immediately available to generate an invoice. The accounting module pulls the approved timesheet lines, applies the hourly rate set on the engagement, and produces a draft invoice that the billing manager reviews before sending. The client receives the invoice by email and can view it in their portal. When payment arrives, Odoo reconciles it against the invoice automatically.
UK accountancy firms operate across three main billing models, and Odoo handles all three. The table below sets out how each model maps to Odoo configuration and how UK VAT is treated in each case.
| Billing model | When used in accountancy | Odoo configuration | UK VAT handling |
|---|---|---|---|
| Time and materials | Ad-hoc advisory work, bookkeeping bureau charged by hour, tax queries billed per hour | Project billing policy set to 'Timesheets'. Hourly rate set per employee or per project. Invoices generated from approved timesheets. Partner review before sending. | Standard rate (20%) applied to invoice lines. Odoo tax mapping handles the correct VAT code. Exempt supplies (some financial services) can be configured per service type. |
| Fixed fee | Annual accounts preparation, self-assessment, payroll bureau at fixed monthly rate, company secretarial | Project billing policy set to 'Fixed Price'. Invoice milestone set at project start or completion. Timesheets logged for WIP tracking and profitability reporting but do not drive invoice value. | Fixed-fee invoice raised with correct VAT rate. If engagement spans a VAT quarter, partial invoices can be raised at milestone. VAT point rules apply on invoice date by default. |
| Retainer (subscription) | Monthly retained clients for ongoing bookkeeping, payroll, management accounts or outsourced FD services | Odoo Subscriptions module (or recurring invoice template in Accounting). Invoice auto-generated monthly on a set date. Direct debit integration via GoCardless possible with third-party connector. | Standard rate applied to each recurring invoice. If retainer includes both standard-rated and exempt elements, tax must be split correctly per line. We configure this during implementation. |
Work-in-progress (WIP) leakage is one of the biggest margin problems in small practices. Time spent on client work that never gets billed - because it was not logged, was logged incorrectly, or was written off without the partner seeing it - represents real lost revenue. Odoo's mobile app (iOS and Android) includes a timer function. A fee earner can start a timer when they pick up the phone to a client and stop it when they hang up. The time entry is saved against the correct project. This alone recovers meaningful revenue in practices that move from spreadsheet-based time recording to Odoo.
We typically see UK practices recover 8-15% of previously unlogged billable time in the first quarter after going live with Odoo timesheets. That translates directly to revenue that was already being earned but never invoiced.
After implementing Odoo for professional services firms in the UK, the pattern is consistent: practices recover significant unbilled revenue in the first 90 days, but underestimate the change management required to shift staff from spreadsheets to daily timesheet discipline. The technology works. The habit change is the project.
The specific numbers from our UK accountancy implementations: practices with five to fifteen fee earners typically recover £12,000-£35,000 in previously unlogged or under-billed time in the first year. A ten-person practice billing at an average of £120 per hour, with each fee earner logging just one additional 30-minute billable task per week that previously went unrecorded, generates approximately £31,200 in recovered revenue annually. That is the scale of the WIP leakage problem in a typical practice, and it is why timesheet discipline is the first conversation we have with any firm we implement Odoo for.
Where Odoo does not deliver as expected: practices that run complex tax computation workflows and expect Odoo to reduce their Iris or CCH licence costs immediately are usually disappointed in the first six months. The compliance tools stay. What changes is everything around them - the client onboarding process, the billing run, the debtor chasing cycle and the management reporting. Those are the areas where Odoo replaces manual effort with automated workflows. The return on investment is real, but it comes from operational efficiency, not licence displacement.
The implementations that fail are the ones where no partner champions the project internally. Odoo requires consistent timesheet input from every fee earner. If senior staff do not log time, junior staff follow their lead. We now make partner buy-in a prerequisite of any implementation we take on. It is not a technical requirement - it is an operational one.
Odoo automates the invoicing cycle by generating draft invoices from approved timesheets, sending them on a configured schedule, and triggering a graduated reminder sequence for unpaid invoices at 7, 14 and 21 days - all without manual intervention from the billing team. Partners step in only for the clients who genuinely need a conversation.
Chasing debtors is one of the most time-consuming and relationship-sensitive tasks in any accountancy practice. Partners do not enjoy calling clients about unpaid invoices. Junior staff often do not feel empowered to do it firmly enough. The result is an aged debtor book that grows quietly until the partners review it quarterly and wince.
When we configure Odoo for a UK practice, we set up a follow-up sequence that works as follows. An invoice is sent on the due date. If unpaid after seven days, Odoo sends a polite reminder automatically by email. If still unpaid after fourteen days, a firmer reminder goes out. After twenty-one days, the system flags the client for a personal call by the billing manager. This sequence is fully configurable - we set the exact wording, timing and escalation rules to match the culture and client relationships of the firm. The system does the repetitive work; the partner steps in only for the clients who genuinely need a conversation.
The aged debtor report in Odoo shows outstanding invoices grouped by how long they have been outstanding: current, 30 days, 60 days, 90 days and over 90 days. This report is available in real time from the accounting dashboard. There is no waiting for month-end to understand what is owed to the practice. Partners can see their own client debtors filtered by engagement type or responsible staff member.
Every client set up in Odoo can receive a portal invitation. When they log in, they see their own invoices, outstanding balance and payment history. They can download a PDF of any invoice. This self-service function reduces the volume of routine queries coming into your practice and accelerates payment: clients who can see a clear, professionally presented invoice in a portal tend to pay faster than clients who have to email to request a copy.
Odoo connects to UK bank accounts via open banking feeds (through compatible aggregators). Incoming payments are matched automatically to outstanding invoices where the reference and amount align. Partial payments, payment on account and client credits are all handled. The bookkeeper's job moves from manually matching payments to reviewing the exceptions that the system could not match automatically.
A critical point for accountancy firms: Odoo 19 submits your firm's own VAT return directly to HMRC via the Making Tax Digital API. This is not a workaround or a bridge tool - it is a direct connection from Odoo's accounting module to HMRC's MTD for VAT API. Your practice's quarterly VAT return is prepared from your Odoo transactions and submitted with a single confirmation. The submission record is stored in Odoo for audit purposes.
This is particularly relevant for practices that are currently using a separate piece of software just for their own MTD VAT submission. Odoo eliminates that duplication. For more detail on how MTD works in the context of UK business software, the GOV.UK guidance on Making Tax Digital for VAT sets out the HMRC requirements that Odoo 19 meets.
Odoo provides four categories of practice management reporting in real time: client profitability per engagement (hours logged versus invoiced value), WIP (unbilled time as a cash flow indicator), fee earner utilisation (billable versus non-billable time ratios), and revenue by service line - all drawn from the same timesheet and invoice data without requiring a separate reporting tool.
Most small practices run on a combination of intuition, ad-hoc spreadsheet pulls and quarterly management accounts that arrive six weeks after the period they cover. Odoo gives partners live data on the metrics that actually drive practice performance.
Because Odoo links timesheets to engagements and invoices, it can report the profit on each client engagement in real time. You see the hours logged, the hourly cost of the fee earners involved (based on the staff cost rate you set), the invoiced value and the gross margin. You can run this report across all engagements for a given period or drill down to a specific client. This is the data that tells you which clients are genuinely profitable and which ones are consuming margin through scope creep, excessive revisions or under-priced fixed fees.
The WIP report shows the value of time logged on active engagements that has not yet been invoiced. This is the single most important cash flow indicator for a time-based practice. If WIP is rising without corresponding invoice generation, either billing is falling behind or engagements are over-running. Odoo surfaces this immediately rather than letting it accumulate silently until a partner review.
Partners can see revenue contribution broken down by fee earner and by service type (audit, tax compliance, bookkeeping, payroll, advisory). This is the data needed to manage capacity, set fee targets and make informed decisions about which service lines to grow. It is also the foundation for any performance-related pay structure based on billed revenue.
The timesheets module feeds a utilisation report that shows what percentage of each fee earner's logged time is billable versus non-billable. Low utilisation rates flag either capacity issues, excessive non-chargeable work or time that is not being logged. For practices managing a team, this report is the operational heartbeat that replaces the uncomfortable weekly 'where did the time go?' conversation with data.
Different partners and staff need different data from Odoo's reporting layer. The table below maps each report type to the role most likely to use it and the frequency at which it delivers value. This is how we configure scheduled report emails during implementation.
| Report | Primary audience | Recommended frequency | Key metric to watch |
|---|---|---|---|
| WIP summary | Managing partner, billing manager | Weekly | Total unbilled hours by engagement. Flag any engagement where WIP has grown for two consecutive weeks without an invoice being raised. |
| Aged debtor report | Managing partner, accounts team | Weekly | Value in the 30-day and 60-day buckets. Any amount appearing in the 90-day+ column requires a direct partner call, not an automated reminder. |
| Fee earner utilisation | Practice manager, managing partner | Weekly or fortnightly | Billable percentage per fee earner. Target varies by role: 70-80% for senior staff, 80-90% for juniors. Below 60% flags a capacity or logging problem. |
| Client profitability by engagement | Responsible partner per client | Monthly | Gross margin per engagement versus the budgeted margin set at project start. Consistently low-margin clients are candidates for fee review or service renegotiation. |
| Revenue by service line | Managing partner, practice board | Monthly | Revenue concentration: if more than 40% of revenue comes from one service line, the practice carries sector risk. This report identifies where to invest in capacity growth. |
| Monthly profitability summary | All partners | Monthly | Total fees invoiced versus total staff cost for the period. The simplest measure of whether the practice is running efficiently. Odoo can email this automatically to all partners on a set date each month. |
Odoo can be configured to send scheduled reports by email - weekly WIP summaries, monthly debtor snapshots, or a quarterly profitability review - directly to partners' inboxes. This means practice management data reaches decision-makers without them needing to log in and run reports themselves.
For a broader look at the technology landscape for UK practices, the ICAEW guidance on practice technology is a useful reference point for firms evaluating their software stack. The Odoo accounting module documentation covers the technical detail on reporting configuration.
Odoo covers CRM, a client portal and cross-module integration in one platform, while dedicated accountancy software such as Iris, CCH and TaxCalc is built for tax computation, XBRL accounts production and Companies House filing. For many UK practices with five to fifty staff, a practical approach is Odoo for practice management alongside retained specialist compliance software - not a full replacement.
The table below sets out how the two types of software typically divide the work across the features that matter most to a UK accountancy practice. Features and pricing vary by product and package, so always confirm current details directly with each vendor.
| Feature | Odoo 19 | Dedicated accountancy practice suites | Tax-focused software | Notes |
|---|---|---|---|---|
| Practice management | CRM, project, timesheets and billing in one platform. | Built for accountancy, with Companies House integration; scope varies by package. | Focused on tax and accounts; practice features vary by product. | Odoo covers CRM and client pipeline visibility; dedicated accountancy suites cover Companies House workflows. |
| Time tracking | Mobile app, real-time WIP, billable/non-billable flags. Profitability reporting per engagement. | Accountancy timesheets integrated with billing. | Varies by product; check current features. | Odoo's mobile capture suits fee earners working away from their desks. |
| Client billing | All three billing models. Automated reminders. Portal access for clients. | Fixed-fee and time-based billing, integrated with accounts production. | Varies by product; check current features. | Odoo's automated reminder cycle suits small practices that chase debtors manually today. |
| MTD VAT filing | Direct HMRC API connection for the firm's own VAT return in Odoo 19. | Available; method depends on the product and bundle. | Available. | Odoo handles the firm's own VAT only; it does not handle clients' VAT returns filed on their behalf. |
| Client portal | Included. Clients view invoices, balances and documents. Configurable access levels. | Available in some products or as an add-on; check current bundles. | Check current features. | Odoo's included client portal can help practices reduce routine invoice queries. |
| CRM | Full CRM with pipeline, lead tracking, email integration, automated follow-ups. | Client records; pipeline features vary by product. | Check current features. | If business development and client pipeline matter to the practice, Odoo's CRM is worth a close look. |
| Tax computation | Not included. Odoo does not prepare self-assessment, CT600 or corporation tax computations; use dedicated tax software alongside Odoo. | Personal and corporation tax modules. | Tax computation is its core function. | Tax compliance software remains essential alongside Odoo for any practice doing compliance work. |
| Companies House filing | Companies House API available for confirmation statement data. No bulk XBRL accounts filing. | Accounts production with direct Companies House and HMRC filing. | Accounts production and Companies House filing available. | Practices filing many sets of statutory accounts need dedicated accounts production software for this workflow. Odoo does not replace it. |
| Price | Per-user Enterprise licence set by Odoo (see current pricing), plus Softomate implementation from £4,000. | Quoted by each vendor; confirm current pricing directly. | Quoted by each vendor; confirm current pricing directly. | Compare the total cost of ownership for the modules and users you need, including any point solutions a combined system would replace. |
For a typical accountancy practice with five to twenty fee earners, the most practical outcome of this comparison is not 'replace everything with Odoo'. It is 'use Odoo for practice management, billing and CRM, and retain your specialist tax software for compliance workflows'. This hybrid approach is what we design and implement at Softomate. The two systems share a client record. Time tracked in Odoo feeds billing in Odoo. Tax work remains in the specialist tool. The practice stops managing three separate billing spreadsheets and a separate CRM while gaining real-time WIP and profitability data it has never had before.
If you want to understand more about the broader scope of business process automation in professional services, our guide on business process automation for UK accountancy practices covers the eight workflows where automation delivers the clearest return.
Odoo can replace Iris or CCH for practice management, billing, time tracking and CRM. It cannot replace them for tax computation, statutory accounts production or bulk Companies House filing via XBRL. Most practices we implement Odoo for retain their specialist tax software for compliance workflows and use Odoo as the commercial and operational layer. This hybrid approach is a practical fit for many UK accountancy firms with five to fifty staff.
Odoo can integrate with Xero via the Xero API or third-party connectors available through the Odoo app store. The key distinction is that Odoo is your practice management system - your clients continue to use Xero, QuickBooks or Sage for their own bookkeeping. If you need specific data flows between Odoo and a client's Xero instance, we scope and configure that during implementation. The integration is practical but should be designed carefully to avoid unnecessary complexity.
Yes. Odoo includes a client portal that you can activate for any client. When a client logs in, they see all invoices issued to them, their outstanding balance and payment history, and can download PDF copies of any invoice. This self-service capability reduces routine invoice queries and tends to accelerate payment. You control which clients receive portal access and what level of detail they can see.
Odoo 19 connects directly to the HMRC Making Tax Digital API and submits your practice's own VAT return from within the accounting module. The VAT return is prepared from your Odoo transactions, reviewed within the system, and submitted to HMRC with a single confirmation. This covers your firm's own VAT obligation only. Odoo does not file VAT returns on behalf of your clients - that workflow requires specialist software and agent authorisation credentials with HMRC.
Our Odoo implementations for UK accountancy firms cover scoping and discovery, module configuration (CRM, Project, Timesheets, Accounting, Client Portal), data migration from your existing systems, team training and a 30-day post-go-live support period. The final cost depends on user count, billing workflow complexity and any custom integrations required: a limited core-module rollout is the starting point, and a full practice setup is quoted as a fixed-price proposal after an initial scoping call. You can also read more about typical Odoo implementation costs for UK businesses in our detailed breakdown.
Odoo core-module implementation: from £4,000 one-off. One limited core-module rollout with agreed configuration, data import, training and handover. Monthly care from £199/month. Prices exclude VAT. Required licences, hosting and usage are itemised before you commit. Care is optional after client-managed handover; additional development is quoted separately.
A standard Softomate implementation for a five to twenty-person accountancy practice takes six to ten weeks from scoping call to go-live. The timeline breaks down as: two weeks for scoping and configuration decisions, two to three weeks for module setup and data migration, one week for user acceptance testing, and one week for training and go-live support. Practices that complete the pre-implementation readiness checklist before we begin consistently go live at the lower end of this range.
Odoo 19 supports MTD for VAT for the firm's own returns via the HMRC API. MTD for Income Tax Self Assessment, which is being phased in from April 2026 for sole traders and landlords above the income threshold, applies to your clients' personal tax affairs rather than to your practice's own tax obligations. Clients' MTD for ITSA compliance is managed through specialist personal tax software such as Iris Personal Tax or TaxCalc - not through Odoo. Your firm's own MTD obligations (VAT, and Corporation Tax when mandated) are handled within Odoo's accounting module.
Odoo includes a payroll module that can process your practice's own employee payroll, calculate PAYE and National Insurance, generate payslips and connect to HMRC's RTI (Real Time Information) system for employer submissions. It is suitable for a firm with up to around 50 employees. We configure this as an optional addition to the core practice management implementation. Running payroll for your clients as a bureau service is a different workflow - Odoo is not designed to replace dedicated payroll bureau software such as Iris Payroll or BrightPay for multi-client bureau operations.
Odoo 19 gives UK accountancy practices a practice management platform that connects client relationships, engagement delivery, time capture and billing in a single system. Implementations start from £4,000 for a limited core-module rollout, with a full practice setup across CRM, Project, Timesheets, Accounting and Client Portal scoped to the firm, and deliver the greatest return on investment in the first 90 days through recovered WIP and reduced debtor days. The firms that gain most are those with five to twenty fee earners where manual billing processes and spreadsheet-based time recording are creating the biggest operational drag. Specialist tax and compliance software stays in place alongside Odoo - the two systems serve different purposes and work better together than either does alone.
We implement Odoo for UK accountancy and professional services firms from our base in Barking, East London. Contact the Softomate team to discuss your practice's requirements and receive a fixed-price implementation proposal.
Small Odoo custom extension: from £3,500 one-off. One defined extension with testing and deployment; major migrations and multiple modules separate. Monthly care from £199/month. Prices exclude VAT. Required licences, hosting and usage are itemised before you commit. Care is optional after client-managed handover; additional development is quoted separately.
Softomate builds custom Odoo AI integrations for UK businesses. View our Odoo AI integration service to see what we deliver and book a free scoping call.
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