Determining a good budget starts with your objective and guest numbers.
For a professional corporate event, count on around €200 to €500+ per person ex. VAT for 250 to 500 guests. For 500 to 1,000 guests, count on around €150 to €400+ per person. For 1,000 to 2,000 guests, around €125 to €350+ per person. Above 2,000 guests, around €100 to €300+ per person. All amounts include venue, catering, entertainment, AV and organisation.
Allocate the budget cleverly: invest the most in experience, in entertainment and programme, rather than in luxury venue rental.