Self Assessment Software

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United Kingdom HQFounded 2026

Deployment

Web-based

Best for

1–10 employees11–50 employees

Overview

About Self Assessment Software

Self Assessment Software is a UK only tool for preparing and submitting Self Assessment tax returns to HMRC. It covers the SA100 and supplementary pages SA101 to SA110, including employment, self employment, UK property, foreign income and capital gains, plus the SA800 partnership return. It produces a tax calculation and an SA302 style summary, runs pre filing checks and submits electronically.

It is built for individuals, sole traders, landlords and partnerships, and for accountants and bookkeepers filing for clients, who get a multi user workspace, client management and filing credits at one credit per client tax year.

Returns are prepared free and paid for only at the point of filing. Individual pricing is 39, 49 or 69 pounds plus VAT per tax year. Accountant credit packs start at 99 pounds plus VAT for ten filings.

This is dedicated annual tax return software rather than a bookkeeping package. It does not do invoicing, bank feeds, VAT, payroll or corporation tax.

At a glance

Software information

Industries served, licensing and the support Self Assessment Software provides.

Industries

  • Accounting

Licensing

  • Proprietary
  • One-Time Payment
  • Free trial

Support

  • Phone
  • Email
  • Live Chat
  • Support daysMondayTuesdayWednesdayThursdayFridaySaturdaySupport time06:30 to 19:30 (GMT)

Training

  • Documentation
Languages (1)
English
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Capabilities

Self Assessment Software features

The full feature set, grouped by module.

Tax Compliance

  • Automated Tax Calculation
  • Tax Filing & Return Management
  • Compliance Tracking & Management
  • Tax Exemption & Deduction Handling
  • Tax Rule Engine
  • Audit Trail & History Logs
  • Reporting & Analytics Dashboard

Accounting Practice Management

  • Client Management
  • Staff Management
  • Reporting & Analytics
  • Workflow Management

Plans

Self Assessment Software pricing

Pricing Type
Flat Rate
Free Version
No
Payment Frequency
One-Time Payment
Preferred Currency
GBP (£)
Free Trial
available Days
Prepare free, pay when you file. Individuals pay per tax year: Employment and investment £39 + VAT, Self-employed and property £49 + VAT, Partnership £69 + VAT. Amendments to the same tax year are included. Accountants buy filing credits: 10 for £99, 25 for £199, 50 for £349, 100 for £549 and 250 for £999, all + VAT. One credit covers one client tax year, credits never expire and practice logins are unlimited. No monthly subscription on the public plans.
Employment & investment£39 / year
  • SA100 main return and personal supplementary pages
  • Combined tax calculation and SA302-style estimate
  • Amendments to the same tax year included
Self-employed & property£49 / year
  • Self-employment SA103 short and full
  • UK property SA105
  • Lloyds underwriters SA103L
Partnership£69 / year
  • Partners share SA104 short and full
  • Partnership return SA800 with SA801 to SA804
  • Partnership statement copied to each partner SA104
Accountant filing credits£99 / one-time
  • 10 filing credits one credit per client tax year
  • Unlimited practice logins with no per user fee
  • White label on client app emails and tax PDFs

Media

Screenshots & video