Overpaid at work effect on Tax credits & P60

subway98

This year i got overpaid at work due to SMP being wiped off my records with HR. They repaid all my SMP totalling £1500, but taxed me on this, so it ended up being £1000 in total.
I now have to repay all this again to work, at £30 per month before tax & deductions. So im paying £20.00 after deductions towards my overpayment.
The worrying thing is though, I have been recently told that this overpaymnet will show on my P60 this year, minus the small amount i have repaid as an income. Is this correct?
It's going to show that i have earnt this money 2010/2011 tax year. But come next tax year it will all be normal basic wage, But i will be repaying the overpaymnet still, therfore going home will less each month and my Tax credits for 2011/2012 will be less.Therfore living on less
Is this right, that even if its an official error- it will show on my P60? can i get it removed in anyway?

[Deleted User]

I doubt it as a P60 has to tell it as it is,why was it official error?didnt you notice the overpayments at the time?

subway98

sorry for the time dely in replying

It was official as work have owned up to it. We have agreed to repay the overpayment at a set rate per month. £30 gross,
I have since been onto work again, only to be told that each year the amount of outstanding overpayment will be added or shown on my gross figure on my p60- surely that cant be right. considering im going to most probably end up with an overpyt of tax credits because of this figure gross figure

so for example, i get a basic of £16k, plus by end of next tax year- i should owe about £1k, so work have said the figure on my p60 will be £17k, even though i only get the £16k next year.

then the year after, will be basic £16k plus whatever i still owe on the overpayment. This will carry on being shown on my p60 until cleared. Surely this cannot be right?