Which type of bank account do I need as a sole proprietor ?
Since it is a type of business entity that legally has no separate existence from the owner I feel I can use my personal account. But I would like to receive a confirmation about that.
SHOULD you? Absolutely not. If you're serious about being in business, get serious about accounting for your business expenses and transactions properly by having a separate business account.
It can also save you money on accounting fees, as you'll save your accountant time and frustration trying to parse out your business from your personal expenses.