The amount I have to pay for childcare is based on the tax I pay.
The amount I pay for childcare is calculated based on the tax I pay.
My child's nursery fees are based on the amount of tax I pay.
「私が収めている税金によって、保育料はきまります」= The amount I have to pay for childcare is based on the tax I pay. / The amount I pay for childcare is calculated based on the tax I pay. / My child's nursery fees are based on the amount of tax I pay.
ボキャブラリー
amount = 料金、~料
pay = 払う
childcare = 保育
be based on = ~によって、~に基づいている
tax I pay = 納める税金
calculate = 計算する
child = 子供
nursery fee = 保育料