hi all!

hope someone can help me. last year i registered a salary of £42K and pension contributions for £1.5K and was classified as  medium tax payer, obtaining monthly voucher allowances for £161, when completing the form for next year and updating my salary for 2026-27 with £46K and £1.9 for pension, i have been moved to a high tax payer.
child care provider said high tax payer bracket is £31K to £62K.

can you advise? i am confused!