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IRIS Personal Tax vs Untied

Both stand on tax software. Which one you can start free with, which one lets you read the code, and what each costs once you pay.

IRIS Personal Tax

Paid Self-hostedWebWindows

Choose IRIS Personal Tax if your practice manages UK individual tax compliance and values direct HMRC imports, tax calculations, and IRIS product integrations. Look elsewhere if you need coverage for Members of Parliament supplementary pages or require a free plan or trial.

Visit IRIS Personal Tax

Untied

Paid WebiPhoneAndroid

Untied focuses on personal tax situations involving self-employment, investments, and rental property. Its two paid plans differ by Lite’s stated income and employment limits versus Pro’s unlimited bank accounts.

Visit Untied

The facts

IRIS Personal TaxUntied
Free planNoNo
Open sourceNot publishedNot published
Runs onSelf-hosted, Web, WindowsWeb, iPhone, Android
Lowest paid planFree or on requestuntied Lite: $17 a month
Plans published12
MakerIRIS Personal TaxUntied
Websiteiris.co.ukuntied.io
On tax software#107 of 149#111 of 149

IRIS Personal Tax: what it does well

  • Imports employment and tax information directly from HMRC.
  • Calculates several tax reliefs and Capital Gains Tax.
  • Includes free AI anomaly detection for potential return errors.
  • SmartTax provides real-time calculations and what-if scenarios at no extra cost.
  • Offers self-hosted desktop and cloud deployment options.

What to know first

  • Pricing is available on request.
  • There is no free plan or free trial.
  • Supplementary pages intended for Members of Parliament are excluded.

Untied: what it does well

  • Supports self-employment, investment, and rental income
  • Available on web, iOS, and Android
  • 30-day trial is listed
  • Pro includes unlimited bank accounts

What to know first

  • No free plan
  • State filing is not included
  • Lite limits self-employment income to £90k
  • Lite covers one salaried employment

Alternatives to IRIS Personal Tax Alternatives to Untied The whole list