is it possible to get backdated working tax credits?

[unclebumpkin]

and how does this work? from when are things backdated from etc?

Is it from when they receive the TC600 form or from when you initially contact them or quite what? Thanks

I had tax credits backdated from the date I started employment

they will only backdate one month usually
www.gov.uk/claim-tax-credits/backdate-a-claim