I've got myself so confused. Got a backdated payrise so changed my expected earnings for tax credits to my new salary. Realised that even though the payrise was £2,229 my salary is just under £4000 more than the figure on last year's P60. I've googled and I think the P60 figure is pay before tax and NI but after pension contributions. Is this correct? In which case the figure I need to give tax credits is much lower? I've attached my most recent payslip (28/02/23). Could someone tell me which figures I should be looking at for tax credit purposes?