Tax Credit claim - question about deduction

Stu666

Hi all. I work for a local government authority and regularly claim mileage for use of my own car on official business.  I pay for diesel out of my own pocket and claim it back usually in the following month's pay.  

I am struggling to work out whether I need to deduct these mileage reimbursement payments from my Tax Credit claim, since it is not "earned" income?  I am conscious that HMRC go off my P60 for amount earned, however, because I pay into the LGPS pension scheme, I am having a hard time working out what has already been deducted before arriving at my P60 figure. Maths has never been my forte! 

Currently the reimbursement payments are no more than £500/year but in previous years they could well have run into the thousands.

Jeremy535897

If the reimbursements are not taxable, because they are reimbursements for business mileage at no more than the agreed rate (45p a mile for the first 10,000 miles, 25p thereafter), then they should not affect your tax credit claim.

[Deleted User]

Additionally, it is the P60 figure that is required for the tax credit application. The pension contributions can also be ignored.