Capture more billable time, invoice faster, and stay on top of WIP
Coretime helps accounting firms track time, manage work in progress, raise accurate invoices, and report on profitability, all in one place.
Where accounting firms lose time and revenue
Too much manual admin, poor visibility over WIP, and inconsistent time capture can all slow down billing and affect profitability. Coretime helps bring it all together.
Billable time slips through the cracks
Capture time quickly and consistently, whether your team is working across clients, projects, meetings, or ad hoc tasks.
Billing takes too long
Turn approved time and expenses into accurate invoices faster, with less manual effort at month end.
WIP is hard to see clearly
Get a live view of work in progress, team activity, costs, and revenue so you can make better decisions sooner.
Interested in a demo?
Get in touch with us. Only by getting a good understanding of your business requirements can we recommend a solution.
Book a free demoEverything your firm needs to manage time, WIP, billing, and performance
Coretime gives accounting firms one connected system for managing day-to-day delivery and commercial performance.
Accountant Time Tracking & WIP Management Software
Track time spent on client work down to the minute with Coretime’s accountant time tracking software, capturing both billable and non-billable hours. Real-time WIP (Work in Progress) monitoring gives your practice instant visibility into revenue-generating activity and helps prevent under-billing or untracked work.
Automated Invoicing & Billing for Accountants
Coretime’s invoicing software for accountants streamlines your billing cycle with custom templates, automated invoice generation, and direct integrations with leading accounting systems like Sage, QuickBooks and Xero. Reduce manual errors, accelerate your cash flow, and ensure invoices reflect every billable minute and approved expense.
Expense Management & Reimbursement Software
Capture expenses, receipts, and reimbursable costs tied to client engagements with Coretime’s expense management software. Staff can submit claims via mobile or desktop, while automated approval workflows cut admin time and ensure consistent, audit-ready records.
CRM for Accounting Firms
Keep all client interactions, emails, and documents organised with Coretime’s integrated CRM, designed for accounting and professional services, so billing enquiries, engagement notes, and contact history are all visible in context.
Accounting Analytics & Reporting Tools
Make data-driven decisions using powerful dashboards and custom reporting. Analyse utilisation, profitability by client or engagement, aged debtors, and financial performance across your practice with Coretime’s analytics and reporting tools.
Time & Billing Software Built for Accounting Firms
Coretime is a complete time and billing software solution for accounting firms and professional services teams. From capturing every billable minute to automating client invoicing, streamlining expense claims, and delivering real-time profitability insights, Coretime helps accountants reduce admin, improve revenue recovery, and scale their practice more efficiently
Designed for the way accounting firms operate
Accounting firms need more than a basic timesheet tool. They need visibility across work, people, and commercial performance. Coretime is built to support that.
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Clearer control over WIP
See what has been worked on, what is billable, and what still needs attention.
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Faster, more accurate billing
Reduce delays and manual effort by turning time and expenses into invoices more efficiently.
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Better visibility
Get a clearer view of workloads, profitability, and team performance across clients and jobs.
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A more joined-up workflow
Bring together time tracking, billing, CRM, and reporting in one connected platform.
Fits into the systems you already use
Coretime works alongside the tools many accounting firms already rely on, helping reduce duplication and keep information connected.
Helping accounting firms work more efficiently and bill with confidence
Coretime supports firms that want stronger visibility, better control, and less admin across time and billing.
GWP Engineering Consultants
Coretime are a real business partner, I find them very helpful, and if I have any questions or queries the support team is there to help me instantly. In short, we’re delighted.
Amanda Godwin
GWP Engineering Consultants
R.G. Parkins & Partners
The Coretime system is easy to use, accurate, and has helped to increase our efficiencies, we would absolutely recommend it to other companies in that we find it invaluable.
David Heron
R.G. Parkins & Partners
Deaton Lysaght
Coretime is simply the easiest, yet the most economically advantageous programme that does so much more than just time management. The overall impact of Coretime has improved both productivity and efficiency.
Elizabeth Churchard
Deaton Lysaght
Caulmert
With staff based at different office locations and sometimes different parts of the world, having Coretime has brought us all together using one easily accessible web based system.
Donna Milne
Caulmert
JNP Group
Coretime is one of the most important packages within the business and is based on an annual subscription with full cloud access. This is a truly fantastic system and very affordable for a company of our size, it’s a fraction of the cost of some systems such as Autodesk and Microsoft.
Jamie Seabrook
JNP Group
AJA Architects
For us, the main benefit is that our system is now more user-friendly in terms of project managers being able to access information, such as seeing how a project is performing against budget. They can analyse how time is being spent and what proportion of it is earning fees – it’s easy to translate.
Matt Simpson
AJA Architects
Wildfowl & Wetlands Trust
It’s cut the time spent on routine administrative tasks and enabled us to be more efficient, which means we can focus more on the actual projects. We can have around 20 live projects on the go at any one time and if a client wants a breakdown of where the time is going, we need to respond almost instantly.
Monica
Wildfowl & Wetlands Trust
Aircraft Leasing & Management
We have recently purchased Coretime through Onesys and were impressed with their responsiveness to our original enquiry and to our subsequent questions. The process for understanding what the software could do for us was efficient and straightforward, as was the administration involved in setting-up the account and finalising the agreement.
Nicola Plummer
Aircraft Leasing & Management
Callisto Consulting
Since purchasing Coretime our time spent on administrative tasks, especially around invoicing has greatly reduced. We can also now respond to Client queries much more efficiently and with a more accurate, trusted response.
Overall the processes that we undertake using Coretime are much quicker and simpler and along with the benefits we’re now receiving in how we can report on our Project data using different parameters, we expect to see a return on investment within a year based on administration time saved.
Paul Bunyan
Callisto Consulting
Pete Stead – P+HS Architects
A huge positive for us is the reduction of double entry of information, not having to manipulate information and enter it somewhere else has made such a drastic difference to how we run our business, we can’t imagine not having Coretime now!
Pete Stead – P+HS Architects
Frequently Asked Questions
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What challenges can Coretime help accountants overcome?
Accounting firms often face duplication of effort and errors when managing time, client registers, and job data acros...
Accounting firms often face duplication of effort and errors when managing time, client registers, and job data across multiple spreadsheets. Coretime automates data entry, updates all relevant areas automatically, and provides instant visibility, reducing errors, delays, and administrative workload.
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How does Coretime address these challenges?
Coretime addresses these challenges by providing a centralised repository for all essential information, including cl...
Coretime addresses these challenges by providing a centralised repository for all essential information, including clients, projects, and team members, within a single unified database. This eliminates the need to wait for data to be created in multiple systems, ensuring that information is immediately accessible and accurate.
Unlike manual systems where mistyped job numbers or inconsistent data entry can cause issues, Coretime uses centrally-driven dropdown menus to minimise errors. Additionally, the system allows for real-time data entry through both web browsers and mobile devices, making it convenient to record information from anywhere. This approach eliminates the need for time-consuming end-of-week or end-of-month data collation, as everything is updated instantly.
Furthermore, Coretime's controlled access ensures that users can only book time to jobs they are assigned to, reducing the need for post-entry checks. This real-time validation and error prevention save time and ensure that no records are missed or lost. Once data is entered into Coretime, it is securely stored and accounted for, removing another layer of potential errors and inefficiencies.
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How do accounting firms capture every billable hour?
Accounting firms lose revenue if billable time isn’t tracked accurately. Coretime lets accountants log all client a...
Accounting firms lose revenue if billable time isn’t tracked accurately. Coretime lets accountants log all client and non-client hours, which can then be reviewed, approved, and converted into invoices.
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Can you tell me more about the Coretime app?
The Coretime app works in real time with the desktop system, updating timesheets, expenses, and holiday requests inst...
The Coretime app works in real time with the desktop system, updating timesheets, expenses, and holiday requests instantly. Available on iOS and Android, it allows accountants to record time and expenses directly against jobs, capture receipts, and add notes on the go, providing a clear audit trail and up-to-date information wherever they work.
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How do accounting firms automate invoicing?
Manual invoicing can be slow and error-prone. Coretime generates invoices directly from approved time and expenses, a...
Manual invoicing can be slow and error-prone. Coretime generates invoices directly from approved time and expenses, and integrates with Sage, QuickBooks, Xero and API to keep financial data accurate and consistent.
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How do accounting firms measure profitability?
Profitability depends on tracking time, billing rates, and project budgets. Coretime provides reports by client, part...
Profitability depends on tracking time, billing rates, and project budgets. Coretime provides reports by client, partner, department, or service type to highlight high-performing engagements and areas where margins may be under pressure.
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How does Coretime compare with other ERP solutions for accountants?
Coretime is an ERP-style platform built specifically for accounting firms and professional service providers. Unlike ...
Coretime is an ERP-style platform built specifically for accounting firms and professional service providers. Unlike specialized tools that focus on only one function, Coretime centralises timesheets, expenses, invoicing, forecasting, reporting, CRM, and holiday management in a single system. This all-in-one approach allows accountants to manage their entire practice efficiently without needing multiple separate applications, and it can be implemented quickly, providing ERP functionality without the complexity or cost of larger systems.
Still looking for more support?
Our team is here to help you every step of the way. Whether you have questions about our product or need technical support, don’t hesitate to reach out.
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