About Coretime

Turning time into profit since 1993 - built on a lifetime of software reliability. Our mission is simple: make it effortless to capture time, understand profitability, and get invoices out accurately and on time.

Our mission is simple: make it effortless to capture time, understand profitability, and get invoices out accurately and on time.

Coretime is more than just a time tracking tool. We are a dedicated project management and profitability platform designed specifically for the Professional Services industry. Originally born from Sage Ireland, we purchased the solution in 2020 to give Professional Services a cleaner and faster way to manage their most valuable resource: time.

With over 20,000 users in the UK and Ireland relying on our software daily, we don’t just supply a tool; we partner with you for the long haul

Why Professional Service firms rely on Coretime:

  • Software longevity you can bank on – in an industry where software suppliers come and go, Coretime stands the test of time. Our software evolved from a deep-rooted history within Sage and we combine the unwavering reliability of enterprise level architecture with the agility of modern cloud technology. We build our platform to be a permanent fixture in your daily operations; scaling smoothly as your team grows, keeping your data secure and ensuring your business continuity is never compromised.
  • 100% in-house UK development – we don’t outsource our code. Every single feature, update and integration in Coretime is designed and built by our own in-house development team. This direct control means your feedback doesn’t get lost in a lengthy supply chain. When our users need sector specific compliance updates, our developers build it natively. We are constantly innovating, refining and steering our product roadmap based on what actually helps your business thrive.
  • Direct access to in-house support – when you call Coretime, you speak directly to a product expert in our UK team; never a generic, third-party call centre. Our in-house support team works side by side with our developers every single day. This means if you have a complex query about an integration, report or data migration you get fast, accurate answers from someone who truly understands the software inside and out. We pride ourselves on instant, human to human support that keeps your projects moving forward.

 

Our promise to you

We believe software should outlast the trends. By keeping our development and support entirely in-house, we guarantee that Coretime remains stable, secure and tailored to the unique rhythms of Professional Services teams

Built for the long run

Deep native integrations with Sage, Xero and QuickBooks built by our own team

Rooted in expertise

We operate honestly, delivering clear solutions and reliable advice our clients can trust.

People first support

Real software experts answering the phones to resolve queries efficiently

Continuous innovation

A proactive product roadmap shaped directly by our active user community. View our Coretime Roadmap here

 

Where you’ll find us 📍

 

 

Coretime is headquartered in 3 Sceptre House, Hornbeam Square North, Harrogate HG2 8PB supporting firms across the UK, Ireland, Europe and beyond.

Meet the team behind Coretime

We’re a group of product specialists, consultants and support professionals who’ve worked with professional service firms for years.

Read our customers’ stories

View all our resources
  • Case study

29 Jul 2023

AJA Architects

Established in 1979, Coventry-based Alan Johnson Associates Chartered Architects have built a solid reputation in a…

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  • Case study

03 Nov 2025

Caulmert

Caulmert is an engineering, environmental and planning consultancy with ambitious growth plans. They work across multiple…

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  • Case study

12 Feb 2026

Callisto Consulting

Callisto Consulting is a strategy and digital-delivery consultancy that provides technology assessments, programme management, and project…

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  • Case study

10 Apr 2026

Bennett Freehill

Bennett Freehill is a sustainability engineering consultancy delivering environmentally responsible building solutions across the UK. As…

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  • Case study

14 Jun 2023

Wildfowl & Wetlands Trust Consulting

Wildfowl & Wetlands Trust Consulting (WWT Consulting) is the UK’s leading specialist wetland-related environmental consultancy. Based…

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  • Case study

26 Jan 2026

JNP Group Consulting Engineers

Founded in 1982, UK wide based JNP Group are a firm of Civil and Structural Consultant…

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  • Case study

24 Mar 2024

P+HS Architects

P+HS Architects have over 35 years expertise in the design and technical delivery of complex buildings….

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Hundreds of professional service firms use Coretime to manage time, projects 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.

GWP Consultants Logo

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.

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David Heron

R.G. Parkins & Partners

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.

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Donna Milne

Caulmert

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

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.

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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.

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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.

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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.

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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.

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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!

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Pete Stead – P+HS Architects

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

BRG Technologies

We have been using Coretime at our company for many years now. It is great for logging working hours, allocating time to projects and managing timesheet approvals. It offers a wide range of useful features such as pulling monthly reports, creating invoices, and tracking our internal costs. Having all of these in one place really help our day-to-day operations and visibility across our work whilst making admin much simpler.

Kelly Wynn

BRG Technologies