Side by side
ABC SA100 vs Deductic Online Tax Returns
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.
Paid WindowsMacLinux
ABC SA100 focuses on UK-style individual and partnership tax-return licensing across desktop platforms and the web. Its plan structure is clearest for buyers who know their number of individuals and licence type.
Visit ABC SA100 Paid Web
Deductic combines online HMRC filing with automated deduction checks and optional expert help. Its broad listed coverage suits taxpayers whose returns include employment, property, self-employment or special cases.
Visit Deductic Online Tax ReturnsThe facts
| ABC SA100 | Deductic Online Tax Returns | |
|---|---|---|
| Free plan | No | No |
| Open source | Not published | Not published |
| Runs on | Windows, Mac, Linux | Web |
| Lowest paid plan | ABC SA100 Individual Tax Return 2026: £16 a month | MTD for Income Tax: £15 a month |
| Plans published | 3 | 2 |
| Maker | ABC SA100 | Not published |
| Website | abcsa.co.uk | deductic.com |
| On tax software | #119 of 149 | #123 of 149 |
ABC SA100: what it does well
- Supports self-employment income
- Handles investment and rental income
- Runs on Windows, macOS, and Linux
- Web access supports mobile use
- Offers two-person and partnership bundles
What to know first
- No free plan
- State filing is not supported
- Listed prices are plus VAT
- Plans are tied to one tax year
Deductic Online Tax Returns: what it does well
- Submits SA100–SA110 returns online
- Identifies deductions and reliefs
- Supports MTD and UK VAT returns
- Expert video guidance available
- Works on laptop, tablet or mobile
What to know first
- No free plan
- Self Assessment plan costs £40 per return
- Service is web-only
Alternatives to ABC SA100 Alternatives to Deductic Online Tax Returns The whole list