The TaxOS
Business tax refunds. Instantly.













Get your company's cash flowing with Instant VAT Refunds, R&D/RDEC, Film and Corporation Tax Credits.
Explore our solutions
Service
Instant VAT Refunds
The future of tax is here. Submit your VAT return, get paid within 60 minutes. Simple.
ExploreService
R&D Tax Credits and RDEC
We'll confirm your eligibility, prepare your report, calculate your claim and submit your return. You’ll get a pre-approved credit limit to the value of your return. Drawdown instantly when your claim is submitted.
ExploreService
Creative Industry Tax Credits
For Film & TV, video game development and other creative productions. We'll confirm your eligibility, calculate your claim and offer you a pre-approved credit limit to draw down against instantly when your claim is submitted.
ExploreOne system. All the benefits.
Safe Hands
Success rate with HMRC
Pre-Approved Credit
Drawdown against your VAT refunds and tax credits anytime
Headache-Free
We'll handle all communication with HMRC on your behalf
Efficient Automation
Tech that saves you time -- no more manual processes
Instant Cash Flow
No more waiting for your funds from HMRC
Xero app partner

Adsum integrates seamlessly with Xero
Happy customers across the UK
Adsum delivers industry-leading tax management via its TaxOS, unlocking cash flow for high growth and multi-entity businesses.
See Pricing£160m+
VAT refunds & tax credits claimed
100%
Success rate with HMRC
Matthew Fleetham, Owner, Saunton Vineyard Ltd.
Instant VAT Refunds are a game-changer. For a 3% commission it makes a lot of sense just to have certainty of cash flow. It’s very simple, very quick to set up, hardly any paperwork. And you get access to your VAT refund straight away. There must be thousands of startups that need this product.

Richard Pursey, Founder & CEO at SafeToNet Ltd
It’s great working with such a forward-thinking fintech company supporting our R&D reclaim, allowing us to reinvest back into our tech and continue protecting the safety and privacy of children on the internet.

Mason Quincey, Partner, MAS Investment Group
Adsum's speed, reliability, clear documentation and commitment were the critical points for me. I can say that Adsum is in a class of its own.
