Online Filings review
A focused web service for guided UK Self Assessment filing and HMRC submission.
Reviewed by iTechGuides Editors · Editorial team · Updated Nov 2026
Online Filings is a paid, cloud-based web service for UK entrepreneurs, freelancers, sole traders and small businesses completing Self Assessment. It guides users through income and expenses, calculates tax and refund amounts, and allows returns to be reviewed and edited before electronic submission to HMRC. Filing confirmation and a PDF copy of the return provide a clear record after submission. The service also supports applications or reissues for a Unique Taxpayer Reference, alongside automated filing reminders.
Its strongest fit is a focused online filing workflow connected to the UK tax ecosystem. HMRC submission is built into the service, while Companies House is also listed as an integration. The forms are mobile-friendly, although access is web-only. Income support covers self-employment, investment income, rental income and crypto gains, giving solo filers several relevant routes through the return. Assistance is available through email, live chat and phone, which gives users multiple ways to seek help during the filing process.
Online Filings should suit users who want guided entry, calculation support, review controls and electronic HMRC filing in one web service. Its company-size fit is centred on solo and small businesses, so larger organisations or users seeking a broader tax-management platform may need a different type of product. The service also remains focused on filing rather than a wider set of business operations. Choose it for a straightforward Self Assessment workflow and UTR support; look elsewhere if native mobile access or broader business tax coverage is a priority.
Questions about Online Filings
What does Online Filings run on? Web. It runs in the cloud.
What does Online Filings integrate with? 2 integrations: HMRC and Companies House.
Who is Online Filings built for? Solo users and small businesses (our editorial estimate).
Online Filings pros and cons
- Where it wins
- Guided income and expense entry with tax and refund calculations
- Electronic HMRC submission with instant confirmation and PDF return copy
- UTR support, reminders, and mobile-friendly web forms
- Where it doesn't
- Web-only access rather than a dedicated mobile application
- Primarily suited to solo users and small businesses
- Narrower fit for users needing broader tax workflows
Online Filings fact sheet, pricing and score →
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