FAQs » Post-Sales » Self-Assessment
Self-Assessment
- Does BTCSoftware produce forms like 64-8, R40, and SA303?
- Understanding the 1046 Authentication Failure error message
- Can I submit earlier years’ returns using BTCSoftware?
- How to submit an amended tax return to HMRC
- What data can be rolled forward from a previous year’s tax return?
- How do I change a tax code?
- How to complete a Self-Assessment Return if the period is over 18 months with Capital Allowances
- How to enter Voluntary Class 2 NIC for Self-Employment, Partnerships, and Lloyds
- How to print the SA302 tax calculation for mortgage purposes
- What does “Details to be checked on roll forward” mean?
- How to enter CIS deductions on a SA100 tax return
