Time Tracking & Billing Software for Accounting Firms

Coretime’s accounting time tracking software gives firms full visibility over billable hours, WIP tracking, invoicing and expense management helping you improve time recovery and client billing efficiency. With integrated Sage & Xero, automated invoicing templates and real‑time analytic dashboards, accountants can reduce admin time, increase revenue and deliver more accurate financial insights to clients.

Feature Spotlight for Accountants

Coretime is professional services time and billing software for accountants and accounting firms. Designed to help you track billable hours, manage work in progress (WIP), and automate invoicing, Coretime brings together time tracking, expense management, and reporting so you can improve cash flow, reduce manual admin, and see real-time performance across clients and engagements.

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.


Learn more about Time Tracking

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 and Xero. Reduce manual errors, accelerate your cash flow, and ensure invoices reflect every billable minute and approved expense.


Discover Invoicing & Billing features

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.


See how Expense Management 

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.


Explore Coretime CRM

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.


View Analytics & Reporting

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

Why Accountants Choose Coretime

Accounting firms choose Coretime because it’s purpose-built time and billing software for accountants and professional services teams. It helps practices capture every billable minute, streamline client invoicing, and gain real-time visibility into profitability all from a single, integrated platform.

Accurate Time Tracking in 6-Minute Increments

Running an accounting firm means juggling billable hours, WIP, client communications, and month-end tasks but Coretime gives you one integrated platform to manage it all. Our solution is designed for professional service firms like yours, offering fine-grained time capture (as precise as 6-minute increments), detailed WIP tracking, and full expense logging per client or project.

Automated Billing & Invoicing

Generate accurate invoices directly from approved timesheets and expenses. Coretime’s invoicing software for accountants reduces manual admin and speeds up billing cycles.

-Time Financial VisibilityReal

Monitor Work in Progress (WIP), fees, and costs in real time to improve revenue recovery and make informed financial decisions across clients and engagements.

Seamless CRM for Client Relationships

Coretime’s CRM functionality allows you to track communications, tasks, and contacts all under one roof. Whether you’re following up with a prospect or reviewing past client conversations, you’ll always have full visibility.

Deep Sage Integration

Our two-way Sage integration eliminates duplicate data entry. Coretime shares customer, supplier, and invoice data with Sage so you don’t waste time re-entering information and you can access project and client details from either system.

Custom Reports & Configurations

Every accounting practice is different that’s why we offer custom development and customisation. You can tailor dashboards, choose your timesheet increments, and even have new features built specifically for your workflow.

Scalable & Flexible Deployment

Whether you’re a boutique firm or a growing practice, Coretime scales with you. Choose between cloud or on‑premise deployment depending on your security needs.

Enhanced Compliance & Audit Readiness:

Coretime keeps detailed records of all timesheets, project activities, and communications, making it easier to stay compliant with regulations and quickly prepare for audits.

Improve Team Utilisation and Capacity Planning

Coretime gives full visibility of workloads, billable vs non-billable time, and upcoming commitments so you can allocate work more effectively. This helps ensure workloads are balanced, deadlines are met, and no one is under- or over-utilised supporting better planning during peak periods like year-end or tax season.

Benefits for Accountants

Recover more chargeable hours

Never miss billable time again. Coretime tracks every minute spent on tax queries, client calls, advisory work, and compliance tasks, even when switching between clients rapidly.


Example in practice: You spend 12 minutes answering client questions between meetings. Normally forgotten, but Coretime logs it automatically, adding hundreds of billable hours across the year.

Accelerate cash flow
Real-time timesheets and expenses mean invoicing happens faster with fewer errors or delays.


Example in practice: Instead of waiting until month-end to chase missing timesheets, Coretime automatically prompts staff so invoices go out days or even weeks sooner.

Improve client satisfaction
A built-in CRM keeps all emails, documents, and interactions in one place, ensuring nothing gets missed during tax season or ongoing advisory work.


What this looks like: A client calls asking for last year’s R&D report. Instead of searching folders and inboxes, you access it instantly through their client record.

 

 

Automate approvals, expenses, and billing in one platform.

automated invoicing screen for accountants

More Benefits

Reduce Administrative Burden
Automate routine tasks like timesheet approvals, expense matching, and billing cycles so your team can focus on client work. What used to take half a day matching mileage claims and expense receipts now takes minutes thanks to automated approvals and audit trails.

“Coretime provides an excellent service. Their team keeps us regularly updated, which means we always feel informed, supported, and confident that we’re getting the most out of the system.”Rob Price, Optima Systems

Make better business decisions
Real-time reporting and dashboards give clear insight into utilisation, profitability, write-offs, and aged debtors.


Example in Practice: You quickly identify that advisory work has higher margins than compliance and adjust resource allocation to increase revenue.

Scale confidently as your client base grows 
Coretime grows with your practice whether managing five consultants or a full multi-office accounting team, processes remain consistent and efficient.


Example in Practice: As you hire new staff, Coretime ensures the same workflow, billing structure, and best-practice processes are followed without extra overhead, complexity, or software fees per user.

Frequently Asked Questions

Learn More About Coretime

  • What challenges can Coretime help accountants overcome?

    Accountants often deal with significant duplication of effort, particularly when using multiple spreadsheets to manag...

    Accountants often deal with significant duplication of effort, particularly when using multiple spreadsheets to manage different aspects of their work. For instance, client registers, job registers, and timesheets might be spread across various systems, including Excel. This setup requires administrators to manually collate timesheets, which often span multiple jobs and clients.

    An individual accountant might work on several different tasks within a week, each linked to different clients and jobs, leading to a complex and time-consuming process of re-entering data. This not only increases the risk of errors but also causes delays in data processing. These inefficiencies can be costly, both in terms of time and money. However, by adopting an automated system like Coretime, these challenges are mitigated.

    Coretime ensures that data is entered once, automatically transposed across relevant areas, and instantly visible, significantly reducing duplication, errors, and delays.

  • 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.

  • How does Coretime compare with its competitors?

    Coretime stands out as a comprehensive, ERP-style platform tailored directly to accountants and other professional se...

    Coretime stands out as a comprehensive, ERP-style platform tailored directly to accountants and other professional service providers. Unlike some alternatives, which only focus on one or two specific areas, Coretime provides a wide range of tools to manage an entire practice. These include timesheets, expenses, CRM, holidays, invoicing, forecasting, and reporting.

    This all-in-one approach means business’s can manage their entire operation without needing to purchase multiple systems. It also gives them access to more holistic capabilities, such as forecasting or mobile app integration. Since these abilities are a direct result of Coretime’s breadth and centralisation, more specialised competitors (who might excel at a single function) simply can’t replicate them effectively.

    Additionally, Coretime is designed to be implemented quickly and efficiently, reducing downtime and costs for customers. Unlike larger, more complex ERP systems that require lengthy and expensive implementations, Coretime is up and running in just a few days, offering a balanced solution that provides extensive functionality at a lower price point. This makes Coretime an ideal choice for firms looking for a robust, yet easy-to-implement solution without the hefty costs and time commitments of more extensive systems.

  • What are the benefits of using Coretime?

    Coretime offers several key benefits that set it apart from other project management solutions. One of the most impor...

    Coretime offers several key benefits that set it apart from other project management solutions. One of the most important is the choice of deployment methods. While many accountants are comfortable with cloud-based systems, Coretime recognises that accountants in some industries, like engineering or nuclear sectors, may require on-premise solutions due to security constraints. Coretime gives you the flexibility to choose between a cloud-based deployment or an on-premise installation, ensuring that your data management aligns with your specific security needs and operational preferences.

    Another significant advantage of Coretime is its UK-based support team. Unlike many companies that rely solely on ticketing systems, Coretime offers real, human support that you can reach by phone from 9 to 5, Monday through Friday. This level of service ensures that when you need help, you're speaking directly to someone who understands your needs and can provide immediate assistance.

    Additionally, Coretime’s modular approach allows you to pay only for the features you use, offering a cost-effective solution tailored to your business.

    Finally, Coretime has an active team of developers that can customise the product directly to user needs. Whether you have unique invoicing requirements or need specific functionality, Coretime is willing to develop bespoke solutions, giving you a system that truly fits your business in a way no un-modified off-the-shelf solution ever could. This level of customisation is rare, and means Coretime can grow and adapt alongside your business.

  • How can Coretime be customised for my business?

    Coretime has been designed with customisation in mind, allowing you to tailor the software to meet the unique needs o...

    Coretime has been designed with customisation in mind, allowing you to tailor the software to meet the unique needs of your business. The first level of customisation is through system parameters, where you can decide which features to enable or disable and to what extent.

    For example, if your projects have multiple phases, you can turn that feature on. Or, if you prefer to streamline approvals, you can choose to require timesheet approvals from both project managers and line managers or just one of them. The system also offers flexibility in timesheet increments, allowing you to track time in 6, 15, or 30-minute intervals depending on your preference.

    Additionally, you can customise the terminology used within the software to match your organisation’s language, such as renaming "clients" to "customers" or "projects" to "jobs," making the software feel more intuitive and aligned with your daily operations.

    Beyond these basic customisations, Coretime also allows for the creation of custom fields, which can be used to capture specific information about clients, projects, or any other relevant data. These custom fields can be easily added through the user interface, without needing any technical support, making Coretime a central resource for all your business information.

    Finally, Coretime includes analysis fields, which act as data tags to help you filter and organise your reports. Whether you want to track client profitability by partner, or sort data by industry, these tags allow you to run complex queries and generate reports tailored to your specific needs.

    Beyond these built-in levels of customisation, Coretime has an active team of developers that are happy to re-engineer the software for you, making it truly bespoke to your business. This work can be carried out on a chargeable basis. For less urgent adaptations, we also have a “suggestions” area, where users are encouraged to note the changes they would like to see implemented in upcoming versions of Coretime.

  • How much does Coretime cost?

    Coretime offers flexible and affordable pricing designed to suit the needs of various organisations, with options tha...

    Coretime offers flexible and affordable pricing designed to suit the needs of various organisations, with options that can even make it free for smaller teams.

    f you have 5 users or fewer, Coretime Standard is a great way to get started at just £20/€25 per user per month — no big financial commitment required. For teams of 6 to 25 users, Coretime Professional is available at £25/€30 per user per month.

    Additionally, Coretime's modular pricing allows you to pay only for the features you need. For example, adding a CRM module to your system costs £120 per month, regardless of whether you have five or 500 users.

    This pricing model provides a cost-effective solution compared to other software options, especially when considering the per-user cost. Coretime's pricing is based on named active users, allowing organisations to customise their investment according to their structure and needs, ensuring you only pay for what you actually use.

  • Is Coretime cloud-based, and can it integrate with my accounting system?

    Yes, Coretime offers the flexibility to be either cloud-based or on-premise, depending on your needs. While cloud-bas...

    Yes, Coretime offers the flexibility to be either cloud-based or on-premise, depending on your needs. While cloud-based solutions have become increasingly popular—representing about 90% of deployments—Coretime also provides an on-premise option for organisations that require local data storage for security or regulatory reasons. This dual deployment flexibility ensures that Coretime can meet the needs of a wide range of businesses, from those looking for the convenience of the cloud to those needing the control of an on-premise setup.

    As for integration, Coretime is designed to work seamlessly with several popular accounting systems, and is being updated to integrate with others too. We can provide you with a current list of compatible systems and keep you informed about future integrations as they are developed.

  • Can you tell me more about the Coretime app?

    The Coretime app works alongside the desktop version in real-time, meaning that any data entered through the app is ...

    The Coretime app works alongside the desktop version in real-time, meaning that any data entered through the app is instantly validated and updated across the system. This ensures that information, such as whether a job is active or if you have permission to work on it, is always current. The app is platform-agnostic, working on both Android and iOS devices, and it offers key features including timesheets, expense tracking, and holiday requests and approvals.

    One of the main features of the Coretime app is expense management, which includes receipt capture. Unlike other expense management tools that don't align expenses with specific jobs, Coretime allows you to record expenses directly against a customer’s job, making it easier to manage and justify charges. You can snap a photo of your receipt, store it digitally, and link it directly to the corresponding job, providing a clear and accessible audit trail.

    The app also supports note-taking, allowing users to dictate notes related to time entries directly into their phones. This feature is particularly useful for accountants who work remotely and are often on the move as it allows them to capture important details wherever they are, whenever they want.

You’re in good company

Join the growing number of businesses transforming their operations with Coretime, starting from just £20/€25 per user per month. Our customers are strengthening client relationships, gaining real-time project visibility, and driving measurable growth.

Explore their success stories below and see how Coretime can deliver powerful results for your organisation at a price that makes sense.

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.

Aircraft Leasing & Management Logo

Nicola Plummer

Aircraft Leasing & Management

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.

AJA Architects Logo

Matt Simpson

AJA Architects

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.

Callisto Consulting Logo

Paul Bunyan

Callisto Consulting

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.

R G Parkins & Partners Logo

David Heron

R.G. Parkins & Partners

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.

GWP Consultants Logo

Amanda Godwin

GWP Engineering Consultants

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.

Caulmert Logo

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.

JNP Group Logo

Jamie Seabrook

JNP Group

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

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!

P+HS Logo

Pete Stead – P+HS Architects

Optima Systems

Coretime provides an excellent service. Their team keeps us regularly updated, which means we always feel informed, supported, and confident that we’re getting the most out of the system.

Optima Systems Logo

Rob Price

Optima Systems

Spark Architects

We will be able to easily track non-billable work such as fee proposals and revisions, track outstanding invoices versus paid, and understand budget versus actuals and profitability at both project level and RIBA stages.

Spark 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.

WWT Logo

Monica

Wildfowl & Wetlands Trust