Adsum
71 Reviews
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Kavi bbk
Posted 10 Jun 2025
Amazing product to keep eye on your HMRC liability
It is very friendly apps to keep eye on your HMRC liability.

Adam Ginns
Posted 6 Jun 2025
Gamechanger!
This is something HMRC should really provide in some basic sense. However, Adsum is brilliant. It's going to be such a huge help when we get to self-assessment reminders! Looking forward to seeing where the product goes!
MS
Meg Symonds
Posted 6 Jun 2025
Revolutionary!
I'm surprised no-one has done it before as it heals a massive pain point of managing clients' HMRC liabilities for practices
A great app with responsive developers meaning constant development, excited to see where it goes next

Will Blower
Posted 6 Jun 2025
Game changing app
We recently attended Accountex for the fourth year in a row (so we are pretty set up with our software offering and only go now to touch base with our suppliers), and then we came across Adsum (Particularly OpenTax)...
It caught our attention straight away... we didn't need a demo, we didn't need any sales pitch - they offered the ability to simply see our client's HMRC liabilities in one clean space - sold.
We signed up the day after Accountex and are enjoying the software very much so. Thank you!

Lewis Back
Posted 6 Jun 2025
Really useful app!
We recently started using Adsum and it has been great! It helps us easily identify issues with clients or in one case, an issue where HMRC owed the client money!
AC
Andrea Conroy
Posted 30 May 2025
Great app
This app has made it a lot easier to keep on top of vat returns. Highly recommend
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