21/10/2026
Got a second HMRC letter about your savings interest? Check it before you pay, or you could end up paying twice.
Imagine this.
You get a letter from HMRC in the summer. You check it, and you pay.
Then a second letter arrives this winter. It says you owe even more.
Before you pay it, stop.
HMRC is sending a second round of Simple Assessment letters between October and December 2026, based on bank and building society interest. And a second letter shows your total tax for the year, including the amount you may have already paid.
Picture £600 already paid. The second letter shows £850 due in total. The real balance is £250, not £850.
Same year. Same tax. Very different payment.
Quick checklist:
✅ Look at the total on the second letter
✅ Subtract anything you’ve already paid for that tax year
✅ Spot an error? Contact HMRC within 60 days
✅ Letters dated before 31 October 2026 are due by 31 January 2027. Letters dated 31 October or later are due within 3 months of the letter date.
You don’t need to work any of this out yourself.
👉 We’ll check your HMRC letter before you pay.
Comment “LETTER” and we’ll help.
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