Random £900 tax underpayment

conmag96

I recently started a new job 8 weeks ago, I couldn’t provide a p45 so I filled a starter checklist, I was on emergency tax for 7 weeks over paying tax by £235, I was eventually put on the right tax code and was taxed correctly and was told several times by HMRC I would get the over paid tax back in the next couple of weeks.. after all this I was randomly taxed £187 in a week and now I am told I owe them £900, I’ve calculated my previous tax years and is all up to date now errors, Anyone know what I can do?

chrisbur

In order to understand this details are required.
Taxable gross
Tax paid
Tax code/basis
Taxable pay to date
Tax paid to date
Previous gross
Previous tax
These details from last payslip in old employment and each payslip in new employment, Previous pay tax may be blank on some payslips.

Dazed_and_C0nfused

It wouldn't harm if you told us what tax year the underpayment relates to and if it is incorporated into the make up of your current tax code.  The make up of your current tax code would help as well.

conmag96

Dazed_and_C0nfused said:

It wouldn't harm if you told us what tax year the underpayment relates to and if it is incorporated into the make up of your current tax code.  The make up of your current tax code would help as well.

The underpayment is in this years current tax year and my tax code is 1250LX

Dazed_and_C0nfused

That is highly unlikely to be true.

Most 1250L tax codes consist of just the Personal Allowance.

You need to provide a lot more information for anyone to be able to help you.

conmag96

Dazed_and_C0nfused said:

That is highly unlikely to be true.

Most 1250L tax codes consist of just the Personal Allowance.

You need to provide a lot more information for anyone to be able to help you.

This is my current tax code that’s why I’m so confused, I was on a BR tax code for a few weeks as they thought I had 2 jobs even though they were told by me and my new employer that this is my only employment 

Dazed_and_C0nfused

The underpayment is in this years current tax year

So where exactly does the £900 come into it???

conmag96

Dazed_and_C0nfused said:

The underpayment is in this years current tax year

So where exactly does the £900 come into it???

I honestly dont know they don’t make much sense they just take money from me as an when they like without any written warning 

Dazed_and_C0nfused

Not sure anyone on here is going to be able to help you unless you decide to properly explain what has happened and provide some detail such as chrisbur suggested.

Pennywise

What level of annual earnings are you on? If you're a higher earner, BR won't have taken enough if you should have been paying higher rate tax on some/most of it.

conmag96

Pennywise said:

What level of annual earnings are you on? If you're a higher earner, BR won't have taken enough if you should have been paying higher rate tax on some/most of it.

I’m on £8.50hr 45 hours a week, I’ve paid the right amount of tax all my life as HMRC have confirmed this