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About us

Built with machinery dealers since 1990.

Everything in one place, shaped by how dealerships really work.

Read why UK machinery dealer T H White chose to work with JMA.

Our story

JMA started in 1990 with a simple idea. Build with the people who will use the system.

That hasn’t changed. We listen. We learn how your dealership works. Then we improve DSM to make the day easier.

DSM runs on Microsoft Dynamics 365 Business Central. We chose it for one reason. It gives dealers a stable platform that can grow over time.

A few facts

150+

machinery dealers in agriculture, construction, cranes and transport

3,300+

daily users across the UK, Germany, Norway, Sweden and Denmark

65+

specialists supporting machinery dealers across Northern Europe

35+

years developing solutions for complex dealer operations

How we work

We build DSM together with machinery dealers.

We start by learning your workflows. Then we shape the solution with input from the people who use it every day. Parts. Service. Sales. Rental.

Implementation is planned and structured. No surprises. Just clear steps, clear owners, and steady progress.

A solution that fits your dealership, not the other way around.

T H White logo

T H White put it like this:

"T H WHITE were looking to invest in a Dealer Management System which supports the vision we have for our company in the future, enabling us to be agile and adapt to changing market conditions.

We already have several years of experience using Microsoft Dynamics 365 Business Central to great effect in our Cranes division and we know its potential. To extend this potential to our AG, Construction, Dairy and Groundcare divisions we were looking for a DMS partner who understood our business and would work alongside us in bringing our vision to reality.

JMA are proving to be a very open, humble and trustworthy partner. We enjoy working with the JMA team and are looking forward to achieving success together in the future."

– Phil Walbank, Business Improvement Leader, T H White

    Our leadership team

    Johnny Krogh
    CEO Denmark & Sweden

    Karina B. Andersen
    COO

    Jeannette P. Krogh
    CMO

    Lars Søyland
    CEO Norway

    How we got here

    1990

    JMA is founded in Denmark, built around the needs of machinery dealers.

    2010

    We open our first office in Sweden.

    2018

    We expand into Germany and Norway.

    2024

    We welcome our first UK customer, T H White.

    2025

    JMA becomes part of Aptean, with the same local team and industry focus.