Tax Bill from 2017/18 received

jhe

Looking for advice on a tax bill received  please
reached retirement age and pension paid from early 2017 but still worked in paid employment and paid my tax on my wages every week.
in 2021 received a tax bill for over £500 for tax year 2017/18.
phoned HMRC immediately about it, after a lengthy phone call I was told actually they owe me and refunded over £700 to me
fast forward last week I received a tax bill for 2017/18 for over £500.
after another phone call to HMRC I was informed the refund given to me in 2021 was for another tax year and I still owe the outstanding amount from 2017/18
i am now retired this is a huge amount for me to pay, 
from the time I claimed my pension and carried on working, every year I owed tax at the end of each tax year, my tax code was always adjusted to cover what was owed from the previous tax year .
is this normal to receive a bill from so far back ?

Dazed_and_C0nfused

jhe said:

Looking for advice on a tax bill received  please
reached retirement age and pension paid from early 2017 but still worked in paid employment and paid my tax on my wages every week.
in 2021 received a tax bill for over £500 for tax year 2017/18.
phoned HMRC immediately about it, after a lengthy phone call I was told actually they owe me and refunded over £700 to me
fast forward last week I received a tax bill for 2017/18 for over £500.
after another phone call to HMRC I was informed the refund given to me in 2021 was for another tax year and I still owe the outstanding amount from 2017/18
i am now retired this is a huge amount for me to pay, 
from the time I claimed my pension and carried on working, every year I owed tax at the end of each tax year, my tax code was always adjusted to cover what was owed from the previous tax year .
is this normal to receive a bill from so far back ?

No but it's not impossible.

Have you got the calculation showing how the £500 was arrived at?

jhe

Dazed_and_C0nfused said:

jhe said:

Looking for advice on a tax bill received  please
reached retirement age and pension paid from early 2017 but still worked in paid employment and paid my tax on my wages every week.
in 2021 received a tax bill for over £500 for tax year 2017/18.
phoned HMRC immediately about it, after a lengthy phone call I was told actually they owe me and refunded over £700 to me
fast forward last week I received a tax bill for 2017/18 for over £500.
after another phone call to HMRC I was informed the refund given to me in 2021 was for another tax year and I still owe the outstanding amount from 2017/18
i am now retired this is a huge amount for me to pay, 
from the time I claimed my pension and carried on working, every year I owed tax at the end of each tax year, my tax code was always adjusted to cover what was owed from the previous tax year .
is this normal to receive a bill from so far back ?

No but it's not impossible.

Have you got the calculation showing how the £500 was arrived at?

Thanks
I asked for an explanation -HMRC said 
an underpayment occured as a result of actual gross income being higher than estimated gross income that was included in my tax code.
Its frustrating  I thought it was sorted back in 2021 when they refunded me
I am guessing the refund  is for 2020/21 it is the only tax year they did not discuss during my phone call to them a few days ago, but that was not explained to me back in 2021 when I phoned about the original bill that is over £500

Brie

You should be able to agree a repayment plan with them if they have agreed that this is, in part at least, their error.  So they could change your tax code for 2024/5 and that would allow you to pay it off over the coming tax year.  

Dazed_and_C0nfused

Brie said:

You should be able to agree a repayment plan with them if they have agreed that this is, in part at least, their error.  So they could change your tax code for 2024/5 and that would allow you to pay it off over the coming tax year.  

That definitely won't be possible now.  But arranging to pay it off bit by bit should be possible.