手数料 - fees, charges, handling fee
利子 - interest
手数料や利子 - fees and interest
この場合は“かかる”はpay, chargeです。
たくさん - many, a lot (お金の場合はa lotを使います)
You will have to pay a lot of fees and interest.
There will be a lot of fees and interest.
Pay a lot - お金いっぱい払う