A staff party costs roughly €250 to €350+ per person ex. VAT for 250 to 500 guests. For 500 to 1,000 guests, expect roughly €225 to €325+ per person. For 1,000 to 2,000 guests, roughly €200 to €300+ per person. Above 2,000 guests, roughly €150 to €200+ per person. All amounts excluding VAT, including venue, catering, entertainment and production.
With the WKR you can organise this in a tax-efficient way.