P800 notice - who is at fault here and how can I ensure this doesn't happen again?

SiliconChip

wageslave23 said:

I have no way of checking this as I haven't received a payslip from original job in a long time.

This is the real cause of your issue. Why have you not been insisting that the job provides you with a payslip, preferably for every pay period? Had you done so you'd have been a lot better placed to discover that something was going wrong.

Dazed_and_C0nfused

sheramber said:

wageslave23 said:

Dazed_and_C0nfused said:

You will need to pay the tax but can take some time to pay this for 2022-23 as its not due for payment until January 2024.

Why do you think your National Insurance will change?

Thank you, do you know for sure that I'll be able to pay it slowly after Jan24? I'm a bit perturbed by the conflicting information given by HMRC.

Presumanly NI is calculated on my total earnings, and up to now it's believed my total earnings are roughly £9000 less than what they actually are?

You can pay it slowly over the rest of the year up to 31 January 2024 without any interest being added.

If you want a payment plan after 31 January you would need to request that and will be charged interest on all amounts outstanding  after 31 January 2024 until it is paid.

Interest wouldn't be charged if the op received a P800 as the thread title suggests.

And even if it was a Simple Assessment (PA302) LITRG indicate interest isn't charged on those either.

https://www.litrg.org.uk/tax-guides/tax-basics/what-simple-assessment