TaxSimba — Do I Need to Register for Self Assessment by 5 October 2026?
Preparation worksheet

Optional offline planning aid, not a tax return or filing confirmation.
Keep completed notes securely; never include passwords or one-time codes.

WORK THROUGH THIS EXAMPLE
If you missed the notification date, record when you applied or reactivated and retain HMRC’s acknowledgement. Put any filing date in the actual notice beside the separate tax-payment date. Do not assume waiting for a reference pauses every obligation.

DECISION TO RESOLVE
Which deadline comes from the notice, and which payment still needs arranging?

YOUR POSITION
Relevant year and source: ____________________
Evidence supporting your answer: ____________________
Missing item and who will obtain it: ____________________
Deadline or next review date: ____________________

1. Record why a return is required.
Notes: ______________________________

2. Check prior Self Assessment registration and filing history.
Notes: ______________________________

3. Submit the correct registration or reactivation request.
Notes: ______________________________

4. Retain HMRC's acknowledgement and filing date.
Notes: ______________________________

5. Plan tax payment independently from filing.
Notes: ______________________________

Actions agreed and responsible person:
____________________________________

Guide: https://taxsimba.co.uk/blogs/self-assessment-register-by-5-october-2026
Check the current guide and official sources before relying on a deadline or process.