Voluntary NI contributions Class 3 - HMRC increase too early!

I am no longer working but pay in Class 3 voluntary to maintain my full years. In 2022/23 tax year my NI record was incomplete and stated that: "You can make up the shortfall Pay a voluntary contribution of £800.80 by 5 April 2028. This shortfall may increase after 5 April 2024." Today 7 Dec 2023 the site says: "You can make up the shortfall Pay a voluntary contribution of £824.20 by 5 April 2029. This shortfall may increase after 5 April 2025." As far as my calendar goes it is still 2023 and HMRC have increased the rate from £800.80 to £824.20. This has happened to other family members before as well. Of course other than my paper record the system has changed... How does HMRC say one thing and the 'system' does another? Why can I not pay to 800.80 rate until 4 April 2024??????

Can anyone reply?

Hi Hootsmon,
The amount required for the 2022-2023 tax year at the original rate is £824.20.  
This amount should be received by 5 April 2025 otherwise it might increase on the 6 April each year until 5 April 2029 when it will no longer be payable.
The amount of £800.80 is the amount required for the 2021-2022 tax year (and is still at the original rate).  
This amount should be received by 5 April 2024 otherwise it might increase on the 6 April each year until 5 April 2028 when it will no longer be payable.
Thank you.

Ok. Thanks for clarifying.

I thought the rates were frozen till April 2025? So last sentence should say "This amount should be received by 5 April 2025"?

Hi unicfox,
The amount required for voluntary class 3 contributions for the 2022-2023 tax year is £824.20 and will be frozen until 5 April 2025.  
From 6 April 2025 the amount required may be due at a higher rate and may increase on 6 April each tax year until 5 April 2029.  
After 5 April 2029 it will no longer be possible to pay for the 2022-2023 tax year.
The amount required for voluntary class 3 contributions for the 2021-2022 tax year is £800.80 and will be frozen until 5 April 2025.  
We previously advised 5 April 2024 but this has now been extended.
From 6 April 2025 the amount required may be due at a higher rate and may increase on 6 April each tax year until 5 April 2028.
After 5 April 2028 it will no longer be possible to pay for the 2021-2022 tax year.
Before deciding to pay voluntary contributions you may wish to obtain a State Pension Forecast to ensure that it’s worthwhile to do so.  
If you would like a State Pension Forecast more details are available via:  Check your State Pension forecast
Thank you.