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Untied
Techstars '19Surrey, GB · Founded 2018 · 9 employees on LinkedIn · 1 known investors
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Untied is a UK tax software platform for self-employed individuals, gig workers, landlords and sole traders, designed to simplify Making Tax Digital (MTD) compliance and self-assessment tax filing. The platform automates tax calculations, tracks mileage and expenses, and enables direct filing to HMRC through a mobile app and web interface.
Also known as untied · UT Tax Ltd
Founders & leadership
Investors · 1
How we know: the Techstars portfolio · open dataset · Top 3000 Accelerator Startups (no YC) 2026-08 · Not right? Tell us
Company profile
researched Sep 2026Untied, operated by UT Tax Ltd, is a UK personal tax application delivered through iOS and Android apps and a browser interface. It is aimed at sole traders (including Construction Industry Scheme workers), freelancers, digital platform and gig workers, landlords, company directors, high earners and other individuals who file UK self assessment returns. The product lets users connect bank accounts and credit cards, import or manually enter transactions, tag income and expenses, set automation rules, log car and bike mileage, send invoices and request payments from customers, and view real-time tax calculations and insights on their tax position.
The software is recognised by HMRC and supports filing and payment directly to HMRC, including under Making Tax Digital for Income Tax. Supported return components include PAYE employment income (SA102), self-employment income (SA103S), UK and foreign property income (SA105), capital gains including crypto (SA108), non-residence and remittance basis (SA109), EIS/SEIS relief (SA101), dividend and bank interest income, and student loan repayment calculations, with coverage for Scottish as well as England, Wales and Northern Ireland tax bands. The company also offers registration with HMRC as self-employed, shared access for accountants and advisers, an accountant/agent proposition, public APIs, and a built-in AI feature.
Business model
Subscription software sold direct to individual taxpayers, with an adviser-facing offering and APIs. Plans can be purchased through the company website or via in-app purchase in the mobile app stores.
Recurring subscriptions. Two published tiers as of 2025: "untied Lite" at GBP 64.99 per year (shown as $17/month) and "untied Pro" including MTD at GBP 129.99 per year (shown as $22/month), both VAT inclusive. A 30-day free trial supports test submissions only; a paid plan is required for live filing and MTD. Additional paid add-ons are offered for services such as HMRC onboarding and "untied Express Submit".
Traction
The Android app records over 1,000 downloads and the company publishes customer testimonials from users such as a fitness instructor, a nail salon owner and a freelance content creator. Its help centre holds several hundred articles across MTD, untied Pro, untied Lite, tools, agents and FAQ sections.
Latest developments
The website and app listing carry a 2019-2025 copyright for UT Tax Ltd, a built-in AI feature is advertised, and the Android listing shows a maintenance update dated September 2026.
▸Full profile — market position, technology, go-to-market, geography
Market position
Positions itself as an HMRC-recognised personal tax app built for Making Tax Digital for Income Tax, and states it is award-winning. It is supervised by the Chartered Institute of Taxation and is a registered account information services provider regulated by the FCA (FRN 910169). "untied" is a registered trademark.
Combines HMRC recognition for both self assessment and Making Tax Digital for Income Tax with FCA-regulated account information services permissions, bank and card connectivity, automatic mileage tracking, automated relief optimisation, direct payment to HMRC, HMRC self-employment registration, and adviser sharing in a single mobile-first consumer product.
Technology
Mobile applications for iOS and Android plus a desktop and mobile browser app. The platform uses open-banking style connections to link bank accounts and credit cards across most UK banks, automated transaction capture and rule-based tagging, automatic mileage tracking, real-time tax computation and optimisation of reliefs, direct filing and payment integration with HMRC, and a built-in AI assistant. The company also publishes APIs.
Go-to-market
Direct self-serve acquisition through its website and the Apple and Google app stores with a free 30-day trial, supported by a help centre, newsletter, tax tools and calculators, webinars and a blog, alongside a channel proposition for accountants, tax advisers and bookkeepers and an API offering.
UK self-employed individuals and sole traders including CIS workers, freelancers, gig and digital platform workers such as delivery riders and drivers, landlords, company directors, high earners, non-UK residents and non-domiciles, plus accountants, tax advisers and bookkeepers who support these clients.
Geography
United Kingdom. UT Tax Ltd is registered at Fides House, 10 Chertsey Road, Woking GU21 5AB. The product covers taxpayers in England, Wales, Northern Ireland and Scotland and also supports non-UK residents and non-UK domiciles.
Compiled by commissioned research from 5 cited public sources — announcements, filings, and press listed under research sources below.
Key figures
latest reportedCompany-reported or press-reported figures, each dated to when it was claimed — not independently audited.
▸Research sources · 5
primary sources listed
- Untieduntied.io · web
5 public sources were cited for this profile; the first-party ones are listed here.
Frequently asked questions
- What does Untied do?
- UK personal tax app for the self-employed, landlords and gig workers, HMRC-recognised for Making Tax Digital and self assessment.
- Who are Untied's investors?
- Untied's investors include Techstars.
- Where is Untied headquartered?
- Untied is headquartered in Surrey, GB.