Self Assessment Help Guide

This section covers all the features within the Capium Self Assessment (includes SA100, SA800 & SA900) module in detail, broken down into sections

Self Assessment Supplementary Pages
Overview The Supplementary Pages feature allows you to add additional HMRC forms to an SA100 return. These forms are used to report specific types of incom...
Tue, 30 Jun, 2026 at 6:04 PM
SA100 Tax Calculations
This section of the SA100 Return gives you five options to navigate through: Self-Assessment (this is where the system calculates tax automatically base...
Thu, 11 Feb, 2021 at 5:10 PM
View Payments on Accounts
Overview The Payments on Account section allows you to view the taxpayer's Payments on Account (PoA) for the selected tax year. This provides a summary...
Tue, 30 Jun, 2026 at 6:17 PM
How to bring forward Capital Allowances into current SA100
Location:  Create SA100 > Add supplementary page for Self Employment > Net profits or loss > Capital Allowances > Capital Allowance Calculat...
Tue, 5 Jul, 2022 at 12:48 PM
View SA302 Computation
Location:  Capium > Self Assessment > SA100 > Client Specific > Reports > SA302 Computation   By Clicking on the second button named Vie...
Mon, 25 Mar, 2019 at 11:57 AM
SA800 Dashboard
Location: Capium > Self Assessment > SA800 > Client Specific Personal Tax is a Self-Assessment tax for Individuals and Sole Proprietors.  Ple...
Thu, 11 Feb, 2021 at 5:45 PM
Edit SA800
There are 2 Dropdowns there on SA800 Table Reports Dropdown: In the Reports Dropdown one can download the SA 800 PDF. Action Dropdown: In ...
Mon, 25 Mar, 2019 at 12:05 PM
Create a new SA800
By clicking on the button "+SA800" it will redirect you to the Main Form i.e. SA800 where you can fill in the details regarding the same. ...
Mon, 25 Mar, 2019 at 12:07 PM
Filling out an SA800 Form
The guide to fill a New SA 800 form is as follows: SA 800 Form page has two buttons on the left side one each for adding a new Page,and adding an Attachment...
Mon, 25 Mar, 2019 at 12:12 PM
SA800 Main Form
The main page includes; Cover Page     Partnership Business And Investment Income        Trading And Professional Income        Other Information     ...
Mon, 25 Mar, 2019 at 12:14 PM