TaxSimba — I Haven’t Declared Rental Income to HMRC — What Should I Do?
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
Prepare one line per rental year with gross rent, costs, ownership and any return already submitted. Mark where figures are incomplete. Give the adviser the full timeline so current returns, amendments and a possible disclosure are not accidentally mixed together.

DECISION TO RESOLVE
Which years were omitted, which were filed and which still need evidence?

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

1. List affected years, properties and ownership shares.
Notes: ______________________________

2. Obtain bank and letting-agent records.
Notes: ______________________________

3. Reconstruct income and costs year by year.
Notes: ______________________________

4. Check the correct reporting route for each year.
Notes: ______________________________

5. Record acknowledgement dates, deadlines and payment discussions.
Notes: ______________________________

Actions agreed and responsible person:
____________________________________

Guide: https://taxsimba.co.uk/blogs/undeclared-rental-income-hmrc
Check the current guide and official sources before relying on a deadline or process.