Why use Self Assessment?

1

Trust

We're an HMRC-recognised software provider,
so you can rely on us for professional service!

2

Guidance

Our quick and simple forms include step-by-step advice along the way!

Making Self Assessment easier

Our HMRC-recognised, cloud-based tax software enables free, secure, and straightforward Self Assessment returns.


We support forms for various incomes: employment (SA102), ministers of religion (SA102M), self-employment (short & full) (SA103S & SA103F), Lloyd’s underwriters (SA103L), partnership (short & full) (SA104S & SA104F), UK property (SA105), foreign income (SA106), trusts income (SA107), capital gains (SA108), non-residence (SA109), and the main return (SA100).

Using Self Assessment

How to file a Self-Assessment Return

Benefits to our Self Assessment

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No cost

Our software is currently free of charge during our testing phase.

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Secure & cloud-based

Accessible from any device or location.

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Straightforward & user-friendly

Simple interface with useful guidance.

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Error-checking

Built-in validation system checks input for errors.

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Multiple returns

Manage multiple returns (e.g., for family) in one place.

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How it works

1

Create an account.

2

Fill in personal details.

3

Tell us about your income.

4

Allow us to calculate your tax due.

5

Submit your return.

FAQs

Which forms do you support?

We support a comprehensive range of tax forms covering many Self Assessment scenarios. Here’s a quick overview:


  • Main tax return (SA100): The essential tax return for reporting income and gains.
  • Additional information (SA101): Extra details not covered in the Main Tax Return.
  • Employment (SA102): Income and expenses from employment.
  • Ministers of religion (SA102M): Specific income for clergymen or ministers of religion.
  • Self-employment (short) (SA103S): Streamlined reporting for self-employed individuals.
  • Self-employment (full) (SA103F): Detailed reporting for more complex self-employment.
  • Lloyd's underwriters (SA103L): Tailored for Lloyd’s of London members, including underwriting income.
  • Partnership (short) (SA104S): Simplified form for partnership income and expenses.
  • Partnership (full) (SA104F): Comprehensive details for partnership finances.
  • UK property (SA105): UK rental income and property expenses.
  • Foreign (SA106): To report any overseas income.
  • Trusts etc (SA107): For trust beneficiaries or settlors.
  • Capital gains summary (SA108): Reporting of asset sales (or ‘disposal’) for Capital Gains Tax or related claims.
  • Residence, remittance basis etc (SA109): For non-UK residents and those with specific domicile status.
  • Tax calculations (SA110): Summary of total tax due from all sources.

From simple to complex needs, we’ve got the right forms to make your tax reporting easier!

Why can’t I see my tax return on the HMRC portal yet?

HMRC’s systems can take 2–3 days to process returns and display them on your account.

Why is your Self Assessment service free?

Having launched in beta, we are now actively seeking feedback. So far, it’s going great! Input from users helps us to enhance our service – and we’re keen for more.


While we may charge for optional add-ons later, we encourage you to use AbraTax for free and let us know what you think!

Do you support HMRC’s Making Tax Digital (MTD)?

Yes. Our service is actively evolving to align with HMRC’s Making Tax Digital for Income Tax Self Assessment (MTD for ITSA) initiative. Although timelines and specifications have changed over time, they now appear more definitive:


  • Mandatory MTD for ITSA will begin for many taxpayers in starting April 2026
  • The self-employed and people with property income will be among the first affected
  • Self Assessment returns will require third-party software
  • Users will need to file quarterly (rather than annual) returns

Please contact us (mtd-itsa@abratax.co.uk) for more info, or if you're interested in joining our pilot scheme!

Do you support attachments for Self Assessment returns?

Yes. You can upload up to 20 attachments with each AbraTax Self Assessment. You can add descriptions for each attachment, and refer to them using the “Other Information” spaces in the tax forms.


Simply select “Upload Attachments” on the “Customise Your Return” page. Note that HMRC requires PDF files (up to 5 MB).

What can I do if I made a mistake on my submitted self assessment return / are amended returns supported ?

If you make a mistake, you can submit an amended return. HMRC allows up to 9 return amendments in any tax year. To submit an amended self-assessment return, start a new submission as normal, select “Amended Submission” on the “Customise Your Return” page, and proceed as usual. To save time, you can also select “Duplicate” from the completed submission tile menu to copy the existing boxes into a new submission. You can then mark the submission as amended on “Customise Your Return”, make any required changes, and re-submit.

What support do you offer?

We currently offer email support for our Self Assessment service. Contact us at support@abratax.co.uk.

Get in touch

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