No, you don't need any professional to take care of your taxes. You are only asked to pay them; if you want to hire someone or not, it's up to you.
However, professional help allows you to be punctual with your payments, avoid mistakes and avoid paying more than expected.
Keep in mind that if you miss your payments, you incur penalties that make your debts grow a lot.
Professional help is often recommended so that you keep your taxes payments in order.